This document evaluates different front-end AC-DC converter topologies for use in plug-in electric vehicle chargers. It presents experimental results comparing the performance of five prototype converters: conventional boost, interleaved boost, phase shifted semi-bridgeless boost, bridgeless interleaved boost, and bridgeless interleaved resonant boost. The results show that the phase shifted semi-bridgeless boost converter is well-suited for 120V Level 1 charging applications due to its high efficiency, especially at light loads. The bridgeless interleaved boost converter achieves even higher power levels and is suitable for 240V Level 2 charging applications.
Legend Power Overview 97 2003 120410 1256 DoLegend Power
Legend Power Systems develops the patented Harmonizer-AVR device which reduces electrical energy consumption in commercial buildings by up to 12% by optimizing voltage. It was founded in 2001 and completed R&D in 2009. Notable clients include Sacramento Municipal Utility District, Honda, IKEA, and various locations in Canada. The Harmonizer-AVR reduces energy costs and carbon emissions by adjusting voltage to stay within normal ranges, reducing power consumption in lighting and equipment without impacting output. It provides approximately a 3 year return on investment and reduces maintenance costs over its 20 year lifespan.
Legend Power Systems company profile v2Jerry Chang
Legend Corporation is an Australian engineering solutions group with six divisions delivering market leading brands. It has 250 employees, $110 million in annual revenues, and has been established for over 25 years. The presentation provides an overview of Legend's company profile, brands, distribution network across Australia and New Zealand, extensive product range across various sectors including fibre optics, electronics, manufacturing, data and power products. It also describes the research and development process, manufacturing facilities, customer service team and mobile website capabilities.
This document provides information about power electronics projects available from Vision Groups. It lists 100 project titles within various domains of power electronics, including buck converters, boost converters, AC-DC converters, rectifiers, inverters, motor drives, renewable energy, and more. It also provides contact information for Vision Groups, which offers guidance and support for completing these projects, including project reports, demonstrations, and embedded hardware kits. Students can implement their own project ideas or choose from the lists of titles.
Ieee 2014 2015 matlab simulink power electronics projects titlespowerprojects
We offer IEEE 2014 matlab simulation projects, IEEE 2015 matlab simulation projects for B.E, M.E, B.Tech, M.Tech final year students in engineering colleges. We provide all project support with project training.
This project aimed to develop a system to monitor and correct alternating current power factor by switching capacitor banks. The system used a Hampden motor to create an inductive load. A SATEC programmable logic controller measured the power factor and was programmed to energize relays to switch capacitor banks in or out when the power factor dropped below a set point. The goal was to maintain the power factor high enough to avoid utility company charges. Testing showed the motor's power factor could be varied from 0.3 to 0.8 lagging by adjusting its load. The controller and software allowed programming actions to switch capacitors and correct the power factor.
IRJET- An Active Partial Switch Power Factor Coorection using High Step Up In...IRJET Journal
1. The document proposes an active partial switch power factor correction system using a high step-up interleaved boost converter. It aims to improve power quality by shaping the input current to reduce harmonics and correct the power factor.
2. The system consists of a two-phase interleaved boost converter with a phase shift between the converters to reduce input current ripple. A PI controller is used to reshape the input current.
3. Simulation results show the voltage output waveform meets expectations. The power factor correction circuit achieves a high power factor under different operating conditions.
Ieee power electrincs projects 2016 2017 titles mtechIeee Xpert
This document lists 94 IEEE power electronics projects for 2016-2017, providing project codes, titles, and years. It also provides contact information for IeeeXpert.com, which delivers these projects to electrical engineering students all over India, offering a 100% output satisfaction guarantee or refund. The projects cover topics like converters, inverters, motor drives, renewable energy, and more.
Legend Power Overview 97 2003 120410 1256 DoLegend Power
Legend Power Systems develops the patented Harmonizer-AVR device which reduces electrical energy consumption in commercial buildings by up to 12% by optimizing voltage. It was founded in 2001 and completed R&D in 2009. Notable clients include Sacramento Municipal Utility District, Honda, IKEA, and various locations in Canada. The Harmonizer-AVR reduces energy costs and carbon emissions by adjusting voltage to stay within normal ranges, reducing power consumption in lighting and equipment without impacting output. It provides approximately a 3 year return on investment and reduces maintenance costs over its 20 year lifespan.
Legend Power Systems company profile v2Jerry Chang
Legend Corporation is an Australian engineering solutions group with six divisions delivering market leading brands. It has 250 employees, $110 million in annual revenues, and has been established for over 25 years. The presentation provides an overview of Legend's company profile, brands, distribution network across Australia and New Zealand, extensive product range across various sectors including fibre optics, electronics, manufacturing, data and power products. It also describes the research and development process, manufacturing facilities, customer service team and mobile website capabilities.
This document provides information about power electronics projects available from Vision Groups. It lists 100 project titles within various domains of power electronics, including buck converters, boost converters, AC-DC converters, rectifiers, inverters, motor drives, renewable energy, and more. It also provides contact information for Vision Groups, which offers guidance and support for completing these projects, including project reports, demonstrations, and embedded hardware kits. Students can implement their own project ideas or choose from the lists of titles.
Ieee 2014 2015 matlab simulink power electronics projects titlespowerprojects
We offer IEEE 2014 matlab simulation projects, IEEE 2015 matlab simulation projects for B.E, M.E, B.Tech, M.Tech final year students in engineering colleges. We provide all project support with project training.
This project aimed to develop a system to monitor and correct alternating current power factor by switching capacitor banks. The system used a Hampden motor to create an inductive load. A SATEC programmable logic controller measured the power factor and was programmed to energize relays to switch capacitor banks in or out when the power factor dropped below a set point. The goal was to maintain the power factor high enough to avoid utility company charges. Testing showed the motor's power factor could be varied from 0.3 to 0.8 lagging by adjusting its load. The controller and software allowed programming actions to switch capacitors and correct the power factor.
IRJET- An Active Partial Switch Power Factor Coorection using High Step Up In...IRJET Journal
1. The document proposes an active partial switch power factor correction system using a high step-up interleaved boost converter. It aims to improve power quality by shaping the input current to reduce harmonics and correct the power factor.
2. The system consists of a two-phase interleaved boost converter with a phase shift between the converters to reduce input current ripple. A PI controller is used to reshape the input current.
3. Simulation results show the voltage output waveform meets expectations. The power factor correction circuit achieves a high power factor under different operating conditions.
Ieee power electrincs projects 2016 2017 titles mtechIeee Xpert
This document lists 94 IEEE power electronics projects for 2016-2017, providing project codes, titles, and years. It also provides contact information for IeeeXpert.com, which delivers these projects to electrical engineering students all over India, offering a 100% output satisfaction guarantee or refund. The projects cover topics like converters, inverters, motor drives, renewable energy, and more.
The document lists 75 IEEE project titles from 2014-2015 related to power electronics. Most of the projects involve bidirectional DC-DC converters, boost converters, buck converters, buck-boost converters, and BLDC motor drives. The projects were conducted under various domains including bidirectional DC-DC conversion, BLDC motors, boost conversion, buck conversion, buck-boost conversion, and general DC-DC conversion. The document provides contact information for a technology company that may provide more details on the listed projects.
V. Venkateswara Rao is applying for the position of DGM/AGM at Power Projects. He has over 16 years of experience in electrical engineering for power plant projects, operations, and maintenance. His most recent experience includes successfully commissioning various cogeneration power plants. He is currently working as Senior Manager of Electrical and Instrumentation at a thermal power plant project to erect 2 x 38.5 MW power units. He holds a B.Tech in electrical engineering and has extensive experience managing electrical systems for multiple power and industrial projects in India and Iran.
ASOKA TECHNOLOGIES
(B.TECH/M.TECH ELECTRICAL PROJECTS USING MATLAB/SIMULINK)
WE OFFER ACADEMIC MATLAB SIMULATION PROJECTS FOR
1. ELECTRICAL AND ELECTRONICS ENGINEERING [EEE]
2. POWER ELECTRONICS AND DRIVES [PED]
3. POWER SYSTEMS [PS]….etc
We will develop your OWN IDEAS and your IEEE Papers with extension if necessary and also we give guidance for publishing papers…
For Further Details Call Us @
0-9347143789/9949240245
For Abstracts of IEEE papers and for any Queries mail to: asokatechnologies(gmail) and also visit asokatechnologies(blogspot)
Capacitors and filters are used in power grids and industrial applications to improve power quality by compensating for reactive power and filtering out harmonics. They are needed for efficient power transmission and to ensure reliability of electrical equipment. ABB offers a wide range of capacitor and filter solutions for different voltage levels including solutions for low, medium, and high voltage applications.
This document lists 100 M.E/M.Tech EEE projects from IEEE papers published in 2013-2014. It provides contact information for Buddhatechnologies, an organization that may provide more details on these projects. The projects cover topics related to power electronics, renewable energy integration, electric machines, motor drives, microgrids, and power quality. Project titles include novel converter topologies, control methods for inverters, active power filters, and applications in solar, wind, and electric vehicles.
The document provides an overview of reconditioning switchgear and outlines several benefits: cost savings through reusing materials; shorter production outages; technology upgrades to replace obsolete parts; and environmental benefits from removing old equipment. It then details the reconditioning process which involves thorough cleaning, inspections, basic component repairs, and recommended technology upgrades. Finally, it provides six examples of reconditioned switchgear projects highlighting material and labor costs versus estimated new equipment costs.
CARBON FOOTPRINTING AND DESIGN OF SOLAR POWER PLANTAnkit Singh
This document describes two plans for installing a solar power plant on the roof of the Administrative Building of Pondicherry University. Plan I involves installing a 50kW system with 622 solar panels that would generate 63.37 MWh per year and pay for itself in 17 years. Plan II is a smaller 10kW system with 122 panels generating 12.25 MWh annually and a payback period of 15 years. Both plans would significantly reduce the building's carbon footprint and promote the university's green energy initiatives.
Voltage Power Optimisation facts and fiction. Why it works, what it works on, where it doesn't work, differences between types of technology and how to select a supplier.
This document lists 107 power electronics projects conducted by SAK Informatics between 2014-2015. It provides the project codes, titles, and years for each project. It also lists the contact information for Mahesh Pala and the company email address.
latest 2014-15 ieee projects for eee, power electronics and power systemsAsoka Technologies
ACADEMIC MATLAB SIMULATION 2013/14/15 PROJECTS FOR
• ELECTRICAL AND ELECTRONICs ENGINEERING[EEE]
• POWER ELECTRONICs AND DRIVES[PED]
• POWER SYSTEMS[PS]….
We Can also Develop Your Own Ideas and Your IEEE Papers
With Extension also…
We also write papers for your projects and give guidance for paper publishing.
For Further Details Call Us @
0-9347143789/9949240245
Visit us at: www.asokatechnologies.in
For Abstracts of IEEE papers and Any Queries
mail to: asokatechnologies@gmail.com
IRJET- Modified Sepic Converter with Sliding Mode Controller to Improve t...IRJET Journal
The document discusses a modified SEPIC converter with sliding mode control to improve efficiency from solar panels. A conventional SEPIC converter was modified with an additional inductor and capacitor. Sliding mode control is implemented to handle nonlinearities in the output compared to conventional PI control. Simulation results show the modified SEPIC converter with sliding mode control improves efficiency over conventional techniques by providing a more constant output current and voltage despite input current oscillations.
IRJET- Maximum Power Point Tracking from Pv Panel using Fuzzy Logic ControllerIRJET Journal
This document discusses maximizing power point tracking from a photovoltaic (PV) panel using a fuzzy logic controller. A 1.1 kW PV panel and boost converter system is designed. A fuzzy logic controller is used to track the maximum power point from the PV panel in order to improve efficiency. The fuzzy logic controller provides a duty cycle input to the boost converter based on the PV panel voltage to transfer maximum power to the load. Simulation results show the output voltage is maintained at 230V with an average efficiency of 98.5% using this system.
PG Embedded Systems
www.pgembeddedsystems.com
#197 B, Surandai Road
Pavoorchatram,Tenkasi
Tirunelveli
Tamil Nadu
India 627 808
Tel:04633-251200
Mob:+91-98658-62045, +91-7598462045.
General Information and Enquiries:
g12ganesh@gmail.com
TBEA Xian is a China's Leading Inverter manufacturer ,Who have done 2.5GW of Installation all over in china and globally, And having a good reference in India of 15MW of capacity with sonthaliya Group, and rays power ,Etc.,Which is running in India for more than two years.
We TBEA will not compromise in quality and International standards so we always strictly using only German products for our equipment's.where we having a maufacturing capacity of Inverters 500MW.
So that's How we are able to provide quality product in a reasonable price in India's Competitive market
TBEA SOLAR is a part of the TBEA Group, an 88 year old 6.1 billion USD company with proven expertise and technical know-how in the field of Power transformer & transmission, advanced material and Solar Energy. The company manufactures whole pack of equipment related to Solar Energy and offers EPC service to solar projects under one umbrella, TBEA SOLAR is China’s largest systems integrator and PV equipment manufacturers. Up to now, system integration accumulated 850 MW, inverter application more than 1000 MW.
This document provides information about evaluating power losses. It begins with an introduction to power losses that occur during transmission over long distances via networks from power plants to consumers. The document then discusses:
- Typical average loss percentages at different stages of transmission and distribution networks ranging from 1-6%
- The difference between transmission losses and power plant efficiencies
- The importance of regularly monitoring and evaluating losses to develop reduction strategies
- Methods for determining losses, including load flow analysis and calculating transformer, line, and commercial losses
- Software that can be used to analyze losses
The document concludes by thanking participants and listing references used.
ACADEMIC MATLAB SIMULATION 2013/14/15 PROJECTS FOR
• ELECTRICAL AND ELECTRONICs ENGINEERING[EEE]
• POWER ELECTRONICs AND DRIVES[PED]
• POWER SYSTEMS[PS]….
We Can also Develop Your Own Ideas and Your IEEE Papers With Extension also…
We also write papers for your projects and give guidance for paper publishing.
For Further Details Call Us @
0-9347143789/9949240245
Visit us at: www.asokatechnologies.in
For Abstracts of IEEE papers and Any Queries
mail to: asokatechnologies@gmail.com
The PI33XX: Zero-Voltage Switching Applied to Buck RegulationVicor Corporation
The Picor PI33XX Cool-Power® ZVS Buck Regulator Series delivers maximum power density and high efficiencypoint of load DC-DC regulation. This unique, high density, buck regulator integrates a high performance Zero-Voltage switching (ZVS) topology along with power and support components all within a surface mount package. This paper provides a brief description of the performance and value of the ZVS topology within the PI33XX series.
Power Adapter Design for 400 V DC Power Distribution in Electronic SystemsVicor Corporation
This white paper describes the design of power adaptors for systems that distribute power using 400 V DC. The paper particularly considers telecom and data center equipment.
A review of pfc boost converters for hybrid electric vehicle battery chargersiaemedu
1) The document reviews different types of PFC boost converters that can be used for Plug-in Hybrid Electric Vehicle (PHEV) battery chargers, including conventional, bridgeless, interleaved, and bridgeless interleaved topologies.
2) The conventional boost converter is well-suited for power levels up to 1 kW due to diode bridge losses and heat dissipation issues at higher power. The bridgeless topology avoids the rectifier bridge but has EMI and voltage sensing challenges.
3) Interleaved and bridgeless interleaved topologies offer improvements like lower ripple current and higher effective switching frequency, making them suitable for power levels up to 3 kW and 5 kW, respectively.
Picor, a Vicor company located in North Smithfield, Rhode Island, provides highly integrated, silicon-centric power conversion and power management solutions. Picor's silicon-centric productss complement Vicor's power technology and adhere to Vicor core strategy of innovation and performance.
The document lists 75 IEEE project titles from 2014-2015 related to power electronics. Most of the projects involve bidirectional DC-DC converters, boost converters, buck converters, buck-boost converters, and BLDC motor drives. The projects were conducted under various domains including bidirectional DC-DC conversion, BLDC motors, boost conversion, buck conversion, buck-boost conversion, and general DC-DC conversion. The document provides contact information for a technology company that may provide more details on the listed projects.
V. Venkateswara Rao is applying for the position of DGM/AGM at Power Projects. He has over 16 years of experience in electrical engineering for power plant projects, operations, and maintenance. His most recent experience includes successfully commissioning various cogeneration power plants. He is currently working as Senior Manager of Electrical and Instrumentation at a thermal power plant project to erect 2 x 38.5 MW power units. He holds a B.Tech in electrical engineering and has extensive experience managing electrical systems for multiple power and industrial projects in India and Iran.
ASOKA TECHNOLOGIES
(B.TECH/M.TECH ELECTRICAL PROJECTS USING MATLAB/SIMULINK)
WE OFFER ACADEMIC MATLAB SIMULATION PROJECTS FOR
1. ELECTRICAL AND ELECTRONICS ENGINEERING [EEE]
2. POWER ELECTRONICS AND DRIVES [PED]
3. POWER SYSTEMS [PS]….etc
We will develop your OWN IDEAS and your IEEE Papers with extension if necessary and also we give guidance for publishing papers…
For Further Details Call Us @
0-9347143789/9949240245
For Abstracts of IEEE papers and for any Queries mail to: asokatechnologies(gmail) and also visit asokatechnologies(blogspot)
Capacitors and filters are used in power grids and industrial applications to improve power quality by compensating for reactive power and filtering out harmonics. They are needed for efficient power transmission and to ensure reliability of electrical equipment. ABB offers a wide range of capacitor and filter solutions for different voltage levels including solutions for low, medium, and high voltage applications.
This document lists 100 M.E/M.Tech EEE projects from IEEE papers published in 2013-2014. It provides contact information for Buddhatechnologies, an organization that may provide more details on these projects. The projects cover topics related to power electronics, renewable energy integration, electric machines, motor drives, microgrids, and power quality. Project titles include novel converter topologies, control methods for inverters, active power filters, and applications in solar, wind, and electric vehicles.
The document provides an overview of reconditioning switchgear and outlines several benefits: cost savings through reusing materials; shorter production outages; technology upgrades to replace obsolete parts; and environmental benefits from removing old equipment. It then details the reconditioning process which involves thorough cleaning, inspections, basic component repairs, and recommended technology upgrades. Finally, it provides six examples of reconditioned switchgear projects highlighting material and labor costs versus estimated new equipment costs.
CARBON FOOTPRINTING AND DESIGN OF SOLAR POWER PLANTAnkit Singh
This document describes two plans for installing a solar power plant on the roof of the Administrative Building of Pondicherry University. Plan I involves installing a 50kW system with 622 solar panels that would generate 63.37 MWh per year and pay for itself in 17 years. Plan II is a smaller 10kW system with 122 panels generating 12.25 MWh annually and a payback period of 15 years. Both plans would significantly reduce the building's carbon footprint and promote the university's green energy initiatives.
Voltage Power Optimisation facts and fiction. Why it works, what it works on, where it doesn't work, differences between types of technology and how to select a supplier.
This document lists 107 power electronics projects conducted by SAK Informatics between 2014-2015. It provides the project codes, titles, and years for each project. It also lists the contact information for Mahesh Pala and the company email address.
latest 2014-15 ieee projects for eee, power electronics and power systemsAsoka Technologies
ACADEMIC MATLAB SIMULATION 2013/14/15 PROJECTS FOR
• ELECTRICAL AND ELECTRONICs ENGINEERING[EEE]
• POWER ELECTRONICs AND DRIVES[PED]
• POWER SYSTEMS[PS]….
We Can also Develop Your Own Ideas and Your IEEE Papers
With Extension also…
We also write papers for your projects and give guidance for paper publishing.
For Further Details Call Us @
0-9347143789/9949240245
Visit us at: www.asokatechnologies.in
For Abstracts of IEEE papers and Any Queries
mail to: asokatechnologies@gmail.com
IRJET- Modified Sepic Converter with Sliding Mode Controller to Improve t...IRJET Journal
The document discusses a modified SEPIC converter with sliding mode control to improve efficiency from solar panels. A conventional SEPIC converter was modified with an additional inductor and capacitor. Sliding mode control is implemented to handle nonlinearities in the output compared to conventional PI control. Simulation results show the modified SEPIC converter with sliding mode control improves efficiency over conventional techniques by providing a more constant output current and voltage despite input current oscillations.
IRJET- Maximum Power Point Tracking from Pv Panel using Fuzzy Logic ControllerIRJET Journal
This document discusses maximizing power point tracking from a photovoltaic (PV) panel using a fuzzy logic controller. A 1.1 kW PV panel and boost converter system is designed. A fuzzy logic controller is used to track the maximum power point from the PV panel in order to improve efficiency. The fuzzy logic controller provides a duty cycle input to the boost converter based on the PV panel voltage to transfer maximum power to the load. Simulation results show the output voltage is maintained at 230V with an average efficiency of 98.5% using this system.
PG Embedded Systems
www.pgembeddedsystems.com
#197 B, Surandai Road
Pavoorchatram,Tenkasi
Tirunelveli
Tamil Nadu
India 627 808
Tel:04633-251200
Mob:+91-98658-62045, +91-7598462045.
General Information and Enquiries:
g12ganesh@gmail.com
TBEA Xian is a China's Leading Inverter manufacturer ,Who have done 2.5GW of Installation all over in china and globally, And having a good reference in India of 15MW of capacity with sonthaliya Group, and rays power ,Etc.,Which is running in India for more than two years.
We TBEA will not compromise in quality and International standards so we always strictly using only German products for our equipment's.where we having a maufacturing capacity of Inverters 500MW.
So that's How we are able to provide quality product in a reasonable price in India's Competitive market
TBEA SOLAR is a part of the TBEA Group, an 88 year old 6.1 billion USD company with proven expertise and technical know-how in the field of Power transformer & transmission, advanced material and Solar Energy. The company manufactures whole pack of equipment related to Solar Energy and offers EPC service to solar projects under one umbrella, TBEA SOLAR is China’s largest systems integrator and PV equipment manufacturers. Up to now, system integration accumulated 850 MW, inverter application more than 1000 MW.
This document provides information about evaluating power losses. It begins with an introduction to power losses that occur during transmission over long distances via networks from power plants to consumers. The document then discusses:
- Typical average loss percentages at different stages of transmission and distribution networks ranging from 1-6%
- The difference between transmission losses and power plant efficiencies
- The importance of regularly monitoring and evaluating losses to develop reduction strategies
- Methods for determining losses, including load flow analysis and calculating transformer, line, and commercial losses
- Software that can be used to analyze losses
The document concludes by thanking participants and listing references used.
ACADEMIC MATLAB SIMULATION 2013/14/15 PROJECTS FOR
• ELECTRICAL AND ELECTRONICs ENGINEERING[EEE]
• POWER ELECTRONICs AND DRIVES[PED]
• POWER SYSTEMS[PS]….
We Can also Develop Your Own Ideas and Your IEEE Papers With Extension also…
We also write papers for your projects and give guidance for paper publishing.
For Further Details Call Us @
0-9347143789/9949240245
Visit us at: www.asokatechnologies.in
For Abstracts of IEEE papers and Any Queries
mail to: asokatechnologies@gmail.com
The PI33XX: Zero-Voltage Switching Applied to Buck RegulationVicor Corporation
The Picor PI33XX Cool-Power® ZVS Buck Regulator Series delivers maximum power density and high efficiencypoint of load DC-DC regulation. This unique, high density, buck regulator integrates a high performance Zero-Voltage switching (ZVS) topology along with power and support components all within a surface mount package. This paper provides a brief description of the performance and value of the ZVS topology within the PI33XX series.
Power Adapter Design for 400 V DC Power Distribution in Electronic SystemsVicor Corporation
This white paper describes the design of power adaptors for systems that distribute power using 400 V DC. The paper particularly considers telecom and data center equipment.
A review of pfc boost converters for hybrid electric vehicle battery chargersiaemedu
1) The document reviews different types of PFC boost converters that can be used for Plug-in Hybrid Electric Vehicle (PHEV) battery chargers, including conventional, bridgeless, interleaved, and bridgeless interleaved topologies.
2) The conventional boost converter is well-suited for power levels up to 1 kW due to diode bridge losses and heat dissipation issues at higher power. The bridgeless topology avoids the rectifier bridge but has EMI and voltage sensing challenges.
3) Interleaved and bridgeless interleaved topologies offer improvements like lower ripple current and higher effective switching frequency, making them suitable for power levels up to 3 kW and 5 kW, respectively.
Picor, a Vicor company located in North Smithfield, Rhode Island, provides highly integrated, silicon-centric power conversion and power management solutions. Picor's silicon-centric productss complement Vicor's power technology and adhere to Vicor core strategy of innovation and performance.
Vicor Corporation, located in Andover, Massachusetts, designs, manufactures and markets modular power components and complete power systems used in the communications, data processing, industrial controls, test equipment, medical and defence electronic markets.
Este documento discute los beneficios del software libre para las pequeñas y medianas empresas. Explica que el software libre es gratuito y que las empresas que lo desarrollan obtienen ingresos a través de la consultoría, los servicios, la formación y las adaptaciones. También argumenta que el software libre tiende a ser más fiable debido a que la comunidad trabaja junta para arreglar problemas y mejorar el código. Finalmente, analiza los factores que una empresa debe considerar para evaluar si el software libre es una buena opción, incluyendo
El documento presenta varias noticias breves sobre eventos en una escuela primaria y en la localidad de Cerro Chato. Se anuncia una convocatoria para elegir el nombre de un periódico escolar, se detalla una fiesta de cumpleaños compartida con recetas incluidas, y se informa sobre temas de salud y donaciones recibidas por la escuela.
Presentación de los Sellos de Confianza, una iniciativa de la Cámara Argentina de Comercio Electrónico junto con el Instituto Latinoamericano de Comercio Electrónico eInstituto con el objetivo incentivar y generar una mayor y mejor oferta de productos y servicios online que cumplan con las buenas prácticas de los negocios por Internet generando una experiencia positiva en los consumidores.
KRUBE ofrece servicios de gestión documental para organizar de forma eficiente documentos de instituciones a través de un servidor de documentos accesible los 365 días del año. El servicio incluye consultoría tecnológica, implantación en 6 meses, migración de datos existentes, integración con sistemas y web, y soporte técnico.
Presentacion Proceso de validacion de caso de estudio de Alturasoluciones @Le...Alturasoluciones
Presentación de Alturasoluciones en primera charla de grupo @LeanQuito. Proceso de validación de caso de estudio de Inmobilistico.com, Lean Canvas. Introducción a temas Lean, Lean Startup, System thinking y Agile.
The document summarizes the capabilities of the Fiber Development Laboratory at the University of Kentucky Center for Applied Energy Research. The laboratory contains the largest solution spinning line found in an academic setting in North America. It has decades of experience developing experimental polymers and fibers from lab-scale to pilot-scale. The laboratory's research areas include multifunctional fibers, electrically conductive textiles, polymeric precursor fibers, bio-derived polymers, thermally conductive composites, and lightweight chemical/biological protection materials.
Nrc study implementing us climate change researchSteve Wittrig
The document summarizes a report reviewing the U.S. Climate Change Science Program's (CCSP) strategic plan. It provides an overall assessment of how the plan has evolved in response to previous input and recommendations. Key areas discussed include ensuring a balanced science program, improving decision support activities, strengthening program management and international linkages, and evaluating strategic planning processes. The committee finds improvements but notes ongoing challenges, and provides recommendations to guide future strategic planning efforts.
Homeland Security Finance Forum 2011 Brochurenelsonrs
The document summarizes an upcoming event called the Homeland Security Finance Forum 2011 that will take place on March 29, 2011 in Washington DC. The forum is intended to bring together companies seeking funding in the homeland security sector with qualified investors. It will include 20 company presentations, panel discussions on raising capital and M&A, and networking opportunities. Sponsorship opportunities are available for the event.
El impacto de open data en el mundo y en Venezuela. Profesora Maria Esther Vidal. Universidad Simón Bolivar. Presentacion realizada durante el boot camp sobre periodismo de datos-Venezuela.
Universal Design and Your Website. Presented at Applying Principles of Univer...Lisa Spitz Design
The goal of this session was to provide participants with a foundation for understanding how to re-build or re-design their website with Universal Design and Accessibility as a requirement for success. I covered the basics of Accessibility including what it is, common standards and who benefits from an accessible and universally designed website. The session then focused on tools and techniques to assess your current website and how to prioritize changes that would need to be made. The session closed with some tips on working with designers and developers to refine or redesign your website.
Flowmeter Promag W 800-Electromagnetic-Battery Powered. The battery-powered measuring device for every water application. Email: lam.nguyen@vietan-enviro.com HP: 0945 293292
Energy efficiency in plug in hybrid electric vehicle chargers - evaluation an...Murray Edington
This document evaluates and compares different front-end AC-DC converter topologies for use in plug-in hybrid electric vehicle (PHEV) battery chargers. It surveys several boost power factor corrected converter topologies, including conventional boost, interleaved boost, phase shifted semi-bridgeless boost, bridgeless interleaved boost, and bridgeless interleaved resonant boost converters. Experimental results are presented for prototypes of each topology, showing that the phase shifted semi-bridgeless boost converter is well-suited for low power North American Level I charging applications, while the bridgeless interleaved boost converter is ideal for higher power North American and European Level II charging applications.
A phase shifted semi-bridgeless boost power factor corrected converter for PHEVMurray Edington
The document proposes a phase shifted semi-bridgeless boost power factor corrected converter for plug-in hybrid electric vehicle battery chargers. It aims to improve efficiency at light loads and low lines compared to conventional boost, bridgeless boost, and interleaved boost topologies. The proposed topology introduces two slow diodes to link the ground of the power factor correction stage to the input line while maintaining low conduction losses. Experimental results on a prototype show a power factor over 0.99 from 750W to 3.4kW, total harmonic distortion less than 5% from half to full load, and peak efficiency of 98.6% at 240V input and 1kW load. Loss analysis indicates the proposed topology eliminates large losses from input
A phase shifted semi-bridgeless boost power factor corrected converter for PHEVsMurray Edington
The document proposes a phase shifted semi-bridgeless boost power factor corrected converter for plug-in hybrid electric vehicle battery chargers. It aims to improve efficiency at light loads and low lines compared to conventional boost, bridgeless boost, and interleaved boost topologies. The proposed topology introduces two slow diodes to link the ground of the power factor correction stage to the input line while maintaining many advantages of existing solutions. Experimental results on a prototype show a power factor over 0.99 from 750W to 3.4kW, total harmonic distortion less than 5% from half to full load, and peak efficiency of 98.6% at 240V input and 1kW load, verifying the proposed topology.
A high performance single-phase bridgeless interleaved pfc converter for plug...Murray Edington
The document describes a new bridgeless interleaved (BLIL) power factor correction (PFC) boost converter topology proposed for plug-in hybrid electric vehicle (PHEV) battery chargers. Key points:
(5)
Interval 2 [t1 − t2 ]: At t1 , Q1/Q2 and Q3/Q4 are turned on,
as shown in Fig. 6(b). During this interval, the currents in
1) The BLIL topology eliminates the rectifier bridge of conventional PFC converters, improving efficiency, while interleaving reduces input current ripple and EMI.
2) Detailed steady-state analysis is presented, dividing the switching period
New Topology for Transformer less Single Stage -Single Switch AC/DC ConverterIJMER
This paper presents a transformer less single-stage single-switch ac/dc converter suitable for universal line applications (90–270 Vrms). The topology consists of a buck-type power-factor correction (PFC) cell with a buck–boost dc/dc cell and part of the input power is directly coupled to the output after the first power processing. With this direct power transfer and sharing capacitor voltages, the converter is able to achieve efficient power conversion, high power factor, low voltage stress on intermediate bus (less than 120 V) and low output voltage without a high step-down transformer. The absence of transformer reduces the size of the circuit , component counts and cost of the converter. Unlike most of the boost-type PFC cell, the main switch of the proposed converter only handles the peak inductor current of dc/dc cell rather than the superposition of both inductor currents. Tight voltage regulation is provided by using PID controller. Detailed analysis and design procedures and simulation of the proposed circuit are given .
A high performance-single-phaseac-dcpowerfactorcorrectedboostconverterforplugiMurray Edington
The document describes a new bridgeless interleaved (BLIL) power factor corrected (PFC) boost converter topology for plug-in hybrid electric vehicle (PHEV) battery chargers. The BLIL topology improves efficiency over existing topologies by eliminating the rectifier bridge, while maintaining the benefits of interleaving such as reduced ripple current. Simulation and experimental results for a 3.4 kW prototype verify the analytical work and proof of concept. The BLIL topology is proposed as a high-performance solution for PHEV chargers requiring over 3 kW power.
A ZVS Interleaved Boost AC/DC Converter Using Super Capacitor Power for Hybri...IJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
An automotive onboard 3.3kw battery charger for PHEV applicationsMurray Edington
This document summarizes the design of a 3.3 kW onboard battery charger for plug-in hybrid electric vehicles (PHEVs). The charger uses a two-stage design with an AC-DC power factor correction converter followed by an isolated DC-DC converter. The AC-DC stage uses an interleaved boost converter to achieve high efficiency and power factor. The DC-DC stage is a full-bridge zero-voltage switching converter for high efficiency over a wide output voltage range of 200-450V. Experimental results show the charger achieves up to 93.6% efficiency and meets specifications for power factor, harmonic distortion, and charging time.
An automotive onboard 3.3kw battery charger for phev applicationsMurray Edington
The document describes a 3.3 kW two-stage battery charger design for plug-in hybrid electric vehicles (PHEVs). The charger consists of an AC-DC power factor correction rectifier followed by an isolated DC-DC converter. The AC-DC stage uses an interleaved boost converter topology for high efficiency. The DC-DC stage is a full-bridge zero-voltage switching converter. Design details are provided for key components like the transformer and output inductor. Experimental results show the charger achieves up to 94% efficiency and meets specifications like operating over a 200-450V output voltage range.
The document presents a power factor corrector (PFC) with a bridgeless flyback converter for DC load applications. The proposed PFC uses a bridgeless flyback converter to achieve power factor correction for supplying power to DC loads. To improve efficiency, the bridgeless flyback converter integrates two transformers into a single three-winding transformer and shares an active clamp circuit to recover energy from transformer leakage inductances. Experimental results on a 300W prototype with input voltage of 90-265V and output voltage of 48V show the feasibility of the proposed converter configuration.
This document summarizes a research paper on a single-phase single-stage multi-level AC-DC converter for power factor correction. It presents a five-level AC-DC converter topology that can achieve high power quality with reduced voltage stress. The converter consists of an AC input section, five-level DC-DC converter, and DC link. It operates in five modes to generate five distinct output voltage levels. Simulation results show the converter achieves power factor correction at the input and regulated output voltage. The five-level topology is an improvement over previous three-level converters as it further reduces voltage stress on the switches.
IRJET - A Comparative Analysis of Cuk and Buck Boost Converter for PFC in...IRJET Journal
This document presents a comparative analysis of Cuk and buck-boost converters for power factor correction in an induction motor drive system. It discusses the operation and design of Cuk and buck-boost converters, and simulations are performed in MATLAB/Simulink to evaluate the performance of each converter in improving the power factor when used with a three-phase induction motor. The results show that while both converters increased the power factor compared to without correction, the Cuk converter achieved a higher power factor of 0.96 compared to 0.9 for the buck-boost converter. Therefore, the Cuk converter provides better power factor correction for an induction motor drive.
Experimental Validation of High-V oltage-Ratio LowInput- Current-Ripple DC-DC...Kamal Spring
The document describes the experimental validation of a 4-phase floating-interleaving boost converter (FIBC) for fuel cell applications. The FIBC exhibits low input current ripple and distributed power losses. A 100W prototype was constructed using an Arduino microcontroller to generate gate signals. Experimental results validated the operation of the 4-phase FIBC, showing tight voltage regulation under load changes and low fuel cell current ripple that is 1/4 of the inductor ripple currents. The FIBC provides advantages over conventional converters for fuel cell applications by reducing component ratings and increasing reliability.
Universal demand for power increases due to continuous development to fulfil all these demand. Resources
are used with optimization. A high efficiency and high power factor converters are the major parts of energy
transfer system. This paper present a general review on single stage forward and flyback converter topologies to get
better its performance. This is paper presents a kind general idea of increasing efficiency and power factor of single
stage forward and fly back converter.
A Five – Level Integrated AC – DC ConverterIJTET Journal
This paper presents the implementation of a new five – level integrated AC – DC converter with high input power factor and reduced input current harmonics complied with IEC1000-3-2 harmonic standards for electrical equipments. The proposed topology is a combination of boost input power factor pre – regulator and five – level DC – DC converter. The single – stage PFC (SSPFC) approach used in this topology is an alternative solution to low – power and cost – effective applications.
International Journal of Engineering Research and Applications (IJERA) aims to cover the latest outstanding developments in the field of all Engineering Technologies & science.
International Journal of Engineering Research and Applications (IJERA) is a team of researchers not publication services or private publications running the journals for monetary benefits, we are association of scientists and academia who focus only on supporting authors who want to publish their work. The articles published in our journal can be accessed online, all the articles will be archived for real time access.
Our journal system primarily aims to bring out the research talent and the works done by sciaentists, academia, engineers, practitioners, scholars, post graduate students of engineering and science. This journal aims to cover the scientific research in a broader sense and not publishing a niche area of research facilitating researchers from various verticals to publish their papers. It is also aimed to provide a platform for the researchers to publish in a shorter of time, enabling them to continue further All articles published are freely available to scientific researchers in the Government agencies,educators and the general public. We are taking serious efforts to promote our journal across the globe in various ways, we are sure that our journal will act as a scientific platform for all researchers to publish their works online.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Design and implementation of Closed Loop Control of Three Phase Interleaved P...IJMTST Journal
A single-phase, three-level, single-stage power-factor corrected AC/DC converter operated under closed
loop manner is presented. That operates with a single controller to regulate the output voltage and the input
inductor act as a boost inductor to have a single stage power factor correction with good output response. The
paper deals with a new single stage three level ac-dc converter which performs both power factor correction
and voltage regulation in a single stage. The proposed converter has two separate controllers, one for power
factor correction and the other for regulating the output voltage. A comprehensive review of the existing single
stage topologies has been carried out. Then the operating principle, control scheme and the design of the new
converter are presented. The proposed converter is having an input power factor close to unity and better
voltage regulation compared to the conventional ac-dc converter topologies. Proposed topology is evaluated
through Matlab/Simulink platform and simulation results are conferred.
This paper presents the improved single phase AC-DC super lift Luo converter for enhancing quality of power by mitigating the issues. The proposed converter is used for output voltage control, power factor improvement and reduced source current harmonics at supply side. The main intention of this work is to design appropriate closed loop controllers for this AC-DC super lift Luo converter to achieve unity power factor in the source end. The designed control system comprises of two control loops, voltage control in outer loop and the current controller is devised in the inner loop. Fuzzy controller is used for current controller whereas PI controller as voltage controller. In the MATLAB/SIMULINK platform, simulation of the proposed AC-DC super lift Luo converter is done. It is clear from the simulation results that PI integrated fuzzy controller for voltage and control is proven to be better than classical PI with hysteresis controllers. The proposed system is able to achieve high input power factor along with supply current harmonic distortions of less than 5%.
Similar to Evaluation and efficiency comparison of front end ac dc plug-in hybrid charger topologies (20)
Ever been troubled by the blinking sign and didn’t know what to do?
Here’s a handy guide to dashboard symbols so that you’ll never be confused again!
Save them for later and save the trouble!
Fleet management these days is next to impossible without connected vehicle solutions. Why? Well, fleet trackers and accompanying connected vehicle management solutions tend to offer quite a few hard-to-ignore benefits to fleet managers and businesses alike. Let’s check them out!
The Octavia range embodies the design trend of the Škoda brand: a fusion of
aesthetics, safety and practicality. Whether you see the car as a whole or step
closer and explore its unique features, the Octavia range radiates with the
harmony of functionality and emotion
Welcome to ASP Cranes, your trusted partner for crane solutions in Raipur, Chhattisgarh! With years of experience and a commitment to excellence, we offer a comprehensive range of crane services tailored to meet your lifting and material handling needs.
At ASP Cranes, we understand the importance of reliable and efficient crane operations in various industries, from construction and manufacturing to logistics and infrastructure development. That's why we strive to deliver top-notch solutions that enhance productivity, safety, and cost-effectiveness for our clients.
Our services include:
Crane Rental: Whether you need a crawler crane for heavy lifting or a hydraulic crane for versatile operations, we have a diverse fleet of well-maintained cranes available for rent. Our rental options are flexible and can be customized to suit your project requirements.
Crane Sales: Looking to invest in a crane for your business? We offer a wide selection of new and used cranes from leading manufacturers, ensuring you find the perfect equipment to match your needs and budget.
Crane Maintenance and Repair: To ensure optimal performance and safety, regular maintenance and timely repairs are essential for cranes. Our team of skilled technicians provides comprehensive maintenance and repair services to keep your equipment running smoothly and minimize downtime.
Crane Operator Training: Proper training is crucial for safe and efficient crane operation. We offer specialized training programs conducted by certified instructors to equip operators with the skills and knowledge they need to handle cranes effectively.
Custom Solutions: We understand that every project is unique, which is why we offer custom crane solutions tailored to your specific requirements. Whether you need modifications, attachments, or specialized equipment, we can design and implement solutions that meet your needs.
At ASP Cranes, customer satisfaction is our top priority. We are dedicated to delivering reliable, cost-effective, and innovative crane solutions that exceed expectations. Contact us today to learn more about our services and how we can support your project in Raipur, Chhattisgarh, and beyond. Let ASP Cranes be your trusted partner for all your crane needs!
What Could Be Behind Your Mercedes Sprinter's Power Loss on Uphill RoadsSprinter Gurus
Unlock the secrets behind your Mercedes Sprinter's uphill power loss with our comprehensive presentation. From fuel filter blockages to turbocharger troubles, we uncover the culprits and empower you to reclaim your vehicle's peak performance. Conquer every ascent with confidence and ensure a thrilling journey every time.
Implementing ELDs or Electronic Logging Devices is slowly but surely becoming the norm in fleet management. Why? Well, integrating ELDs and associated connected vehicle solutions like fleet tracking devices lets businesses and their in-house fleet managers reap several benefits. Check out the post below to learn more.
2. 414
IEEE TRANSACTIONS ON SMART GRID, VOL. 3, NO. 1, MARCH 2012
Fig. 2. Conventional PFC boost converter.
TABLE I
CONVENTIONAL BOOST CONVERTER PROTOTYPE COMPONENTS
Fig. 4. Efficiency versus output power at different input voltages for a conventional boost converter.
Fig. 5. Interleaved PFC boost converter.
B. Performance Evaluation of the Conventional Boost
Converter
Fig. 3. Input current, input voltage, and output voltage of a conventional boost
V. Y-axis scales: Iin 10 A/div, Vin 100 V/div and Vo
converter at
100 V/div.
dealing with the heat dissipation in a limited area becomes problematic.
The inductor volume also becomes a problematic design
issue at high power. Another challenge is the power rating limitation for current sense resistors at high power. Due to these
constraints, this topology is good for the low to medium power
range, up to approximately 1 kW. For power levels
kW,
typically, designers parallel discrete semiconductors, or use
expensive
Diode semiconductor modules in
order to deliver greater output power. An example of a module
commonly used in industry is the APT50N60JCCU2 from
Microsemi Corporation.
A. Experimental Results of the Conventional Boost Converter
An experimental prototype was built to verify the operation
of the conventional boost PFC converter. The components used
to build the prototype are listed in Table I.
Fig. 3 shows the input voltage, input current and PFC bus
voltage of the converter under the following test conditions:
V,
A,
kW,
V,
kHz.
Fig. 4 shows the efficiency of a conventional boost converter
at input voltages ranging from 90 V to 265 V. As it can be noted
from this graph, the efficiency drops significantly at low input
line as the power increases. To solve this problem for power
levels
kW, discrete semiconductors are paralleled, or expensive modules are used. This reduces the power loss in the
MOSFETs, but at low line, the input current increases and consequently the input bridge losses increase. As a result, the inductor current also increases.
This requires a design compromise between the core, inductor
size and inductance value. A lower inductance value for a boost
inductor increases the input current ripple and consequently increases the input EMI filter size. It also increases the output capacitor high frequency ripple, thereby reducing the output capacitor lifetime. Therefore, it can be concluded that a conventional boost converter is not the preferred topology for PHEV
battery charging applications.
III. INTERLEAVED BOOST CONVERTER
The interleaved boost converter, illustrated in Fig. 5, consists
of two boost converters in parallel operating 180 out of phase
[14]–[16].
The input current is the sum of the two input inductor currents. Because the inductors’ ripple currents are out of phase,
they tend to cancel each other and reduce the input ripple current caused by the boost switching action. The interleaved boost
converter has the advantage of paralleled semiconductors. Furthermore, by switching 180 out of phase, it doubles the effective switching frequency and introduces smaller input current
ripple, so the input EMI filter is relatively small [17]–[19]. With
ripple cancellation at the output, it also reduces stress on output
3. MUSAVI et al.: EVALUATION AND EFFICIENCY COMPARISON OF FRONT END AC-DC PLUG-IN HYBRID CHARGER TOPOLOGIES
415
TABLE II
INTERLEAVED BOOST CONVERTER PROTOTYPE COMPONENTS
Fig. 7. Efficiency versus output power at different input voltages for an interleaved boost converter.
Fig. 6. Input current, input voltage, and output voltage of an interleaved boost
V. Y-axis scales: Iin 10 A/div, Vin 100 V/div, and Vo
converter at
100 V/div.
Fig. 8. Bridgeless PFC boost converter.
capacitors. However, similar to the boost, this topology has the
heat management problem for the input diode bridge rectifiers;
therefore, it is limited to power levels up to approximately 3.5
kW.
A. Experimental Results of the Interleaved Boost Converter
An experimental prototype was built to verify the operation
of the interleaved boost PFC converter. The components used
to build the prototype are listed in Table II.
Fig. 6 shows the input voltage, input current and PFC bus
voltage of the converter under the following test conditions:
V,
A,
kW,
V,
kHz.
B. Performance Evaluation of the Interleaved Boost Converter
Fig. 7 shows the efficiency of an interleaved boost converter
at input voltages ranging from 90 V to 240 V. As it can be noted
from these graphs, the output power level has increased. Hence,
the efficiency profiles for each curve resemble those from the
conventional boost converter.
Despite the stated advantages of interleaving, the total power
losses are the same compared to a conventional boost converter.
IV. PHASE SHIFTED SEMI-BRIDGELESS BOOST CONVERTER
The bridgeless boost PFC topology avoids the need for the
rectifier input bridge yet maintains the classic boost topology
[20]–[27], as shown in Fig. 8.
It is an attractive solution for applications
kW, where
power density and efficiency are important. This converter
solves the problem of heat management in the input rectifier
Fig. 9. Phase shifted semi-bridgeless PFC boost converter [31].
diode bridge inherent to the conventional boost PFC, but it
introduces increased EMI [28], [29]. Another disadvantage of
this topology is the floating input line with respect to the PFC
ground, making it impossible to sense the input voltage without
a low frequency transformer or an optical coupler. Also, in
order to sense the input current, complex circuitry is needed to
sense the current in the MOSFET and diode paths separately,
since the current path does not share the same ground during
each half-line cycle [20], [30]. In order to address these issues,
a phase shifted semi-bridgeless boost converter, shown in Fig. 9
was introduced in [31].
However, this topology does not achieve high full load efficiency since there is high power stress in the main MOSFETs
due to high intrinsic body diode losses.
A. Experimental Results of the Phase Shifted Semi-Bridgeless
Boost Converter
An experimental prototype was built to verify the operation
of the phase shifted semi-bridgeless boost PFC converter. The
components used to build the prototype are listed in Table III.
Fig. 10 shows the input voltage, input current and PFC bus
voltage of the converter under the following test conditions:
4. 416
IEEE TRANSACTIONS ON SMART GRID, VOL. 3, NO. 1, MARCH 2012
Fig. 10. Input current, input voltage, and output voltage of a phase shifted semiV. Y-axis scales: Iin 10 A/div, Vin 100
bridgeless boost converter at
V/div and Vo 100 V/div.
Fig. 12. THD as a function of output power at
V, and 70 kHz switching frequency.
V and 240 V,
TABLE III
COMPONENT USED IN THE SEMI-BRIDGELESS BOOST CONVERTER PROTOTYPE
Fig. 13. Power factor as a function of output power at
V, and 70 kHz switching frequency.
V,
Fig. 11. Efficiency versus output power at different input voltages for a phase
shifted semi-bridgeless boost converter.
V,
kHz.
A,
kW,
V,
B. Performance Evaluation of the Semi-Bridgeless Boost
Converter
Fig. 11 shows the efficiency of phase shifted semi-bridgeless
boost converter at input voltages ranging from 90 V to 240 V.
As it can be noted from this graph, the efficiency is significantly
improved at light load.
In order to verify the quality of the input current, the input
current THD is shown in Fig. 12. The power factor and harmonic orders are given and compared with EN 61000-3-2 standard in Figs. 13 and 14. It is noted that mains current THD is
less than 5% from 50% load to full load and it is compliant to
EN 61000-3-2 (Figs. 12 and 14). The converter power factor is
Fig. 14. Harmonics orders at
EN61000-3-2 standard.
V and 240
V and 240 V, compared against
shown over entire load range for 120 and 240 V input in Fig. 13.
The power factor is greater than 0.99 from 50% load to full load.
These results show that the phase shifted semi-bridgeless
PFC boost converter is ideally suited for automotive level I
residential charging applications in North America where the
typical supply is limited to 120 V and 1.44 kVA or 1.92 kVA.
As an example, for 120 V input voltage and 1700 W load the
efficiency is 95%, which is the same efficiency achieved with an
interleaved boost converter operating with the same conditions.
But at lighter loads, the semi-bridgeless converter achieves
much higher efficiency. This is critical for converters used in
applications such as battery chargers. In battery chargers, the
converter is fully loaded for only one third of the total charging
time (i.e., during the bulk charging stage). However, during the
absorption and float stages, which are two thirds of the total
5. 417
MUSAVI et al.: EVALUATION AND EFFICIENCY COMPARISON OF FRONT END AC-DC PLUG-IN HYBRID CHARGER TOPOLOGIES
Fig. 15. Bridgeless interleaved PFC boost converter [34].
TABLE IV
BRIDGELESS INTERLEAVED BOOST CONVERTER PROTOTYPE COMPONENTS
Fig. 17. Efficiency versus output power at different input voltages for a bridgeless interleaved boost converter.
Fig. 16. Input current, input voltage, and output voltage of a bridgeless interV. Y-axis scales: Iin 10 A/div, Vin 100
leaved boost converter at
V/div, and Vo 100 V/div.
charging time, the charger is only partially loaded, so light load
efficiency is an important consideration.
V. BRIDGELESS INTERLEAVED BOOST CONVERTER
The bridgeless interleaved topology, shown in Fig. 15, was
proposed as a solution to operate at power levels above 3.5
kW. In comparison to the interleaved boost PFC, it introduces
two MOSFETs and also replaces four slow diodes with two fast
diodes. The gating signals are 180 out of phase, similar to the
interleaved boost. A detailed converter description and steady
state operation analysis are given in [32]–[34]. This converter
topology shows a high input power factor, high efficiency over
the entire load range, and low input current harmonics.
Since the proposed topology shows high input power factor,
high efficiency over the entire load range, and low input current
harmonics, it is a potential option for single phase PFC in high
power level II battery charging applications.
A. Experimental Results of the Bridgeless Interleaved Boost
Converter
An experimental prototype was built to verify the operation
of the bridgeless interleaved boost PFC converter. The components used to build the prototype are listed in Table IV. Fig. 16
Fig. 18. THD as a function of output power at
V, and 70 kHz switching frequency.
V and 240 V,
shows the input voltage, input current and PFC bus voltage of
the converter under the following test conditions:
V,
A,
kW,
V,
kHz.
B. Performance Evaluation of the Bridgeless Interleaved
Boost Converter
Fig. 17 shows the efficiency of the bridgeless interleaved
boost converter at input voltages ranging from 90 V to 240 V.
In general, this converter achieves higher efficiency than
both phase shifted semi-bridgeless converter and interleaved
boost at the same power levels. In addition, due to the improved
efficiency, greater output power can be achieved for a given
input current. For example, at 240 V input, the maximum
output power increases from 3.4 kW for the phase shifted
semi-bridgeless converter up to 4.2 kW for the bridgeless
interleaved boost converter.
Curves of the input current total harmonic distortion are provided in Fig. 18 for full load at 120 V and 240 V input. It is
noted that the input current THD is less than 5% from half load
to full load.
Power factor is another useful parameter to show the quality
of input current. The converter power factor is provided in
Fig. 19 for the entire load range at 120 V and 240 V input. The
power factor is greater than 0.99 from half load to full load.
6. 418
IEEE TRANSACTIONS ON SMART GRID, VOL. 3, NO. 1, MARCH 2012
Fig. 21. Bridgeless interleaved resonant PFC boost converter [35].
Fig. 19. Power factor as a function of output power at
V, and 70 kHz switching frequency.
V,
V and 240
Fig. 22. Efficiency versus output power at 230 V input voltages for a bridgeless
interleaved resonant boost converter by Infineon Technologies AG [35].
TABLE V
BRIDGELESS INTERLEAVED RESONANT BOOST CONVERTER PROTOTYPE
COMPONENTS
Fig. 20. Harmonics orders at
EN61000-3-2 standard.
V and 240 V, compared against
In order to verify the quality of the input current in the proposed topology, its harmonics up to the 39th harmonic are given
and compared with the EN 61000-3-2 standard in Fig. 20 for 120
V and 240 V input. All converter harmonics are well below IEC
standard, which is required for PHEV chargers.
These results demonstrate that the bridgeless interleaved
boost converter is ideally suited for automotive level II residential charging applications in North America and Europe where
the typical supply is limited to input voltages of 240/250 V, and
power levels up to approximately 8 kVA—depending on the
input supply breaker limitation.
VI. BRIDGELESS INTERLEAVED RESONANT BOOST CONVERTER
The bridgeless interleaved resonant topology operating in
BCM was first introduced by Infineon Technologies [35] and
proposed for front end ac-dc stage of level II on-board chargers.
The topology is illustrated in Fig. 21.
Compared to the bridgeless interleaved boost converter, it replaces the four fast diodes with four slow diodes; however, it
requires two high side drivers for MOSFETs -Q1 and Q2 as
well as two low side drivers for Q3 and Q4. The other drawbacks with this topology include the need for at least two sets
of current sensors, two snubbers, and a complex digital control
scheme.
A. Experimental Results and Performance Evaluation of the
Bridgeless Interleaved Resonant Boost Converter
The operation of this converter and efficiency was reported
in [35]. The components used for the prototype are listed in
Table V. Fig. 22 shows the reported efficiency (reproduced) of
the converter under the following test conditions:
V,
A,
,
V. This converter achieves
a peak efficiency of 97.9% at 2.7 kW load, but the efficiency
degrades rapidly beyond the output power of 2.7 kW, so based
on the reported data, it is not an ideal candidate for automotive
level II charging.
VII. TOPOLOGY COMPARISON
Prototypes of the converter presented in Sections II–V were
built to provide data for a qualitative and quantitative performance comparison. The ac power source and dc electronics load
used in the test set-up are California Instrument Model 5001 iX
and Chroma Model 63204 respectively. Loss analysis modeling
was also performed to gain insight into the noted qualitative advantages/disadvantages of each prototype in comparison to the
measured efficiency.
7. MUSAVI et al.: EVALUATION AND EFFICIENCY COMPARISON OF FRONT END AC-DC PLUG-IN HYBRID CHARGER TOPOLOGIES
419
Fig. 24. Efficiency versus output power for different PFC boost converters.
Fig. 23. Loss distribution in semiconductors at
kW, and
kHz.
V,
V,
Fig. 23 shows the modeled loss distribution within the semiconductors for these topologies at
V,
W,
V, and
kHz. The regular diode losses consist
of only conduction losses in bridge rectifier diodes, i.e., reverse
recovery losses were neglected due to the low frequency mains
input. Due to the low reverse recovery characteristics ofSiC, these
diodes were selected for the boost diodes. Therefore reverse recovery losses were neglected for these diodes, so that only conduction losses were considered. Switching loss, conduction loss,
gate charge loss and
CV loss are included in the MOSFET
losses. The inductor losses were neglected in the comparison.
The regular diodes in input bridge rectifiers have the largest
share of losses among the topologies with the input bridge rectifier. The bridgeless topologies eliminate this large loss component
W . However, the tradeoff is that the MOSFET
losses are higher and the intrinsic body diodes of MOSFETs
conduct, producing new losses
W . The fast diodes in
the bridgeless interleaved PFC have slightly lower power losses,
since the boost diode average current is lower in these topologies. Overall the MOSFETs have increased current stress in the
bridgeless topologies, but the total semiconductor losses for the
bridgeless interleaved boost are 37% lower than the benchmark
conventional boost and 37% lower than the interleaved boost.
Since the bridge rectifier losses are so large, it was expected that bridgeless interleaved boost converter would have
the lowest power losses among the topologies studied in
Sections II–V. Also, it was noted that the losses in the input
bridge rectifiers were 56% of total losses in the conventional
PFC converter and in the interleaved PFC converter. Therefore
eliminating the input bridges in PFC converters is justified
despite the fact that new losses are introduced.
A more detailed circuit analysis and loss evaluation for the
proposed level I and level II chargers are given in [31], [34]
Fig. 24 illustrates the measured efficiency as a function of
output power for all five topologies studied under the following
operating conditions:
kHz,
V, and
V. All semiconductor and magnetic devices used in prototype units were the same. Limited information was available
for Infineon bridgeless interleaved resonant converter. Notably
it was measured at 230 V input voltage.
TABLE VI
TOPOLOGY OVERVIEW/COMPARISON
Table VI demonstrates an overall overview and comparison of all candidate topologies discussed for the front end
ac-dc stage of a PHEV battery charger. The phase shifted
semi-bridgeless PFC converter was the topology of choice for
level I chargers and the bridgeless interleaved PFC converter is
an optimal topology for level II chargers.
VIII. CONCLUSIONS
A topology survey aimed at evaluating topologies for use
in front end ac-dc converters for PHEV battery chargers is
presented in this paper. The potential converter solutions have
been analyzed and their performance characteristics are presented. Several prototype converter circuits were built to verify
the proof-of-concept. The results show that the phase shifted
semi bridgeless converter is ideally suited for automotive level
I residential charging applications in North America where
the typical supply is limited to 120 V and 1.44 kVA or 1.92
kVA. For high power level II residential charging applications,
the bridgeless interleaved boost converter is an ideal topology
candidate in North America and Europe where the typical
supply is limited to input voltages of 240/250 V and power
levels up to 8 kVA.
8. 420
IEEE TRANSACTIONS ON SMART GRID, VOL. 3, NO. 1, MARCH 2012
REFERENCES
[1] Y. J. Lee, A. Khaligh, and A. Emadi, “Advanced integrated bidirectional AC-DC and DC-DC converter for plug-in hybrid electric vehicles,” IEEE Trans. Veh. Technol., vol. 58, pp. 3970–3980, Oct. 2009.
[2] K. Morrow, D. Karner, and J. Francfort, Plug-in Hybrid Electric
Vehicle Charging Infrastructure Review. : U.S. Department of
Energy—Vehicle Technologies Program, 2008.
[3] L. Petersen and M. Andersen, “Two-stage power factor corrected
power supplies: The low component-stress approach,” in Proc. 2002
IEEE Appl. Power Electron. Conf. Expo., vol. 2, pp. 1195–1201.
[4] B. Singh, B. N. Singh, A. Chandra, K. Al-Haddad, A. Pandey, and D.
P. Kothari, “A review of single-phase improved power quality AC-DC
converters,” IEEE Trans. Ind. Electron., vol. 50, pp. 962–981, 2003.
[5] J. A. Sabate, V. Vlatkovic, R. B. Ridley, F. C. Lee, and B. H. Cho,
“Design considerations for high-voltage high-power full-bridge zerovoltage-switched PWM converter,” in Proc. 1990 IEEE Appl. Power
Electron. Conf. Expo., pp. 275–284.
[6] R. Redl, L. Balogh, and D. W. Edwards, “Optimum ZVS full-bridge
DC/DC converter with PWM phase-shift control: Analysis, design considerations, and experimental results,” in Proc. 1994 Appl. Power Electron. Conf. Expo., vol. 1, pp. 159–165.
[7] Y. Jang, M. M. Jovanovic, and Y.-M. Chang, “A new ZVS-PWM
full-bridge converter,” IEEE Trans. Power Electron., vol. 18, pp.
1122–1129, Sep. 2003.
[8] D. Gautam, F. Musavi, M. Edington, W. Eberle, and W. G. Dunford,
“An automotive on-board 3.3 kW battery charger for PHEV application,” in Proc. 7th IEEE Veh. Power Propulsion Conf., Chicago, IL,
2011.
[9] R. Beiranvand, B. Rashidian, M. R. Zolghadri, and S. M. H. Alavi,
“Using LLC resonant converter for designing wide-range voltage
source,” IEEE Trans. Ind. Electron., vol. 58, pp. 1746–1756, May
2011.
[10] W.-Y. Choi, B.-H. Kwon, and J.-S. Lai, “A hybrid switching scheme
for LLC series-resonant half-bridge DC-DC converter in a wide load
range,” in Proc. 2010 IEEE Appl. Power Electron. Conf. Expo., pp.
1494–1497.
[11] J. S. Kim, G. Y. Choe, H. M. Jung, B. K. Lee, Y. J. Cho, and K. B.
Han, “Design and implementation of a high-efficiency on- board battery charger for electric vehicles with frequency control strategy,” in
Proc. 2010 IEEE Veh. Power Propulsion Conf., pp. 1–6.
[12] I. D. Jitaru, “A 3 kW soft switching DC-DC converter,” in Proc. 2000
IEEE Appl. Power Electron. Conf. Expo., vol. 1, pp. 86–92.
[13] D. Xu, J. Zhang, W. Chen, J. Lin, and F. C. Lee, “Evaluation of output
filter capacitor current ripples in single phase PFC converters,” in
Proc. 2002 Power Convers. Conf. (PCC), Osaka, Japan, vol. 3, pp.
1226–1231.
[14] M. O’Loughlin, “An interleaved PFC preregulator for high-power
converters,” Proc. Texas Instrum. Power Supply Design Seminar, vol.
Topic 5, pp. 5-1–5-14, 2007.
[15] L. Balogh and R. Redl, “Power-factor correction with interleaved boost
converters in continuous-inductor-current mode,” in Proc. 1993 IEEE
Appl. Power Electron. Conf. Expo., pp. 168–174.
[16] Y. Jang and M. M. Jovanovic, “Interleaved boost converter with intrinsic voltage-doubler characteristic for universal-line PFC front end,”
IEEE Trans. Power Electron., vol. 22, pp. 1394–1401, Jul. 2007.
[17] C. Wang, M. Xu, and F. C. Lee, “Asymmetrical interleaving strategy
for multi-channel PFC,” in Proc. 2008 IEEE Appl. Power Electron.
Conf. Expo., pp. 1409–1415.
[18] P. Kong, S. Wang, F. C. Lee, and C. Wang, “Common-mode EMI
study and reduction technique for the interleaved multichannel PFC
converter,” IEEE Trans. Power Electron., vol. 23, pp. 2576–2584, Sep.
2008.
[19] C. Wang, M. Xu, F. C. Lee, and B. Lu, “EMI study for the interleaved
multi-channel PFC,” in Proc. 2007 IEEE Power Electron. Specialists
Conf., pp. 1336–1342.
[20] U. Moriconi, “A bridgeless PFC configuration based on L4981 PFC
controller,” STMicroelectronics Application Note AN1606,, 2002.
[21] B. Lu, R. Brown, and M. Soldano, “Bridgeless PFC implementation
using one cycle control technique,” in Proc. 2005 IEEE Appl. Power
Electron. Conf. Expo., vol. 2, pp. 812–817.
[22] C. Petrea and M. Lucanu, “Bridgeless power factor correction converter working at high load variations,” in Proc. 2007 Int. Symp. Signals, Circuits, Syst. (ISSCS), vol. 2, pp. 1–4.
[23] J. M. Hancock, “Bridgeless PFC boosts low-line efficiency,” Power
Electron. Technol., 2008 [Online]. Available: http://powerelectronics.
com/power_management/power_ics/bridgeless-pfc-low-line-efficiency-0225/
[24] L. Huber, J. Yungtaek, and M. M. Jovanovic, “Performance evaluation
of bridgeless PFC boost rectifiers,” IEEE Trans. Power Electron., vol.
23, pp. 1381–1390, May 2008.
[25] Y. Jang, M. M. Jovanovic, and D. L. Dillman, “Bridgeless PFC boost
rectifier with optimized magnetic utilization,” in Proc. 2008 IEEE
Appl. Power Electron. Conf. Expo., pp. 1017–1021.
[26] Y. Jang and M. M. Jovanovic, “A bridgeless PFC boost rectifier with
optimized magnetic utilization,” IEEE Trans. Power Electron., vol. 24,
pp. 85–93, Jan. 2009.
[27] W. Y. Choi, J. M. Kwon, E. H. Kim, J. J. Lee, and B. H. Kwon,
“Bridgeless boost rectifier with low conduction losses and reduced
diode reverse-recovery problems,” IEEE Trans. Ind. Electron., vol.
54, pp. 769–780, Apr. 2007.
[28] T. Baur, M. Reddig, and M. Schlenk, “Line-conducted EMI-behaviour
of a high efficient PFC-stage without input rectification,” in Infineon
Technology—Application Note, 2006.
[29] W. Frank, M. Reddig, and M. Schlenk, “New control methods for rectifier-less PFC-stages,” in Proc. 2005 IEEE Int. Symp. Ind. Electron.,
vol. 2, pp. 489–493.
[30] P. Kong, S. Wang, and F. C. Lee, “Common mode EMI noise suppression for bridgeless PFC converters,” IEEE Trans. Power Electron., vol.
23, pp. 291–297, Jan. 2008.
[31] F. Musavi, W. Eberle, and W. G. Dunford, “A phase shifted semibridgeless boost power factor corrected converter for plug in hybrid
electric vehicle battery chargers,” in Proc. 2011 IEEE Appl. Power
Electron. Conf. Expo., pp. 821–828.
[32] F. Musavi, W. Eberle, and W. G. Dunford, “A high-performance
single-phase AC-DC power factor corrected boost converter for plug
in hybrid electric vehicle battery chargers,” Proc. 2010 IEEE Energy
Convers. Congr. Expo., pp. 3588–3595.
[33] F. Musavi, W. Eberle, and W. G. Dunford, “Efficiency evaluation of
single-phase solutions for AC-DC PFC boost converters for plug-inHybrid electric vehicle battery chargers,” in Proc. 2010 IEEE Veh.
Power Propulsion Conf., pp. 1–6.
[34] F. Musavi, W. Eberle, and W. G. Dunford, “A high-performance
single-phase bridgeless interleaved PFC converter for plug-in hybrid
electric vehicle battery chargers,” IEEE Trans. Ind. Appl., vol. 47, no.
4, pp. 1833–1843, Jul./Aug. 2011.
[35] “On board charging: Concept consideration and demonstrator hardware,” in Proc. 25th World Electric Veh. Symp. Expo. (EVS) Infineon
Technol., Shenzhen, China, 2010.
Fariborz Musavi (S’10–M’11) received the B.Sc.
degree from Iran University of Science and Technology, Tehran, Iran, in 1994, the M.Sc. degree from
Concordia University, Montreal, QC, Canada, in
2001, and the Ph.D. degree in electrical engineering
with emphasis in power electronics from the University of British Columbia, Vancouver, BC, Canada.
Since 2001, he has been with several high-tech
companies including EMS Technologies Inc., Montreal, QC, Canada, DRS Pivotal Power, Bedford, NS,
Canada and Alpha Technologies, Bellingham, WA,
USA. Currently he is with Delta-Q Technologies Corp., Burnaby, BC, Canada,
where he works as the Manager of Research, Engineering and is engaged in
research on simulation, analysis, and design of battery chargers for industrial
and automotive applications. His current research interests include high power,
high efficiency converter topologies, high power factor rectifiers, grid-tied
inverters, electric vehicles, and sustainable and renewable energy sources.
Dr. Musavi is a Registered Professional Engineer in the Province of British
Columbia. He was the recipient of the First Prize Paper Award from the IEEE
Industry Applications Society Industrial Power Converter Committee in 2011.
Murray Edington (M’02) studied engineering
at Cambridge University and the University of
Newcastle upon Tyne.
He has 14 years experience in developing automotive power electronics products (specifically EV and
hybrid system components) and 11 years previous experience in the development of industrial power electronics products. Industrial experience includes positions at Ricardo Consulting Engineers, Motorola Automotive Industrial Electronics Group, Farnell Advance Power, and Wavedriver Ltd. He is currently Director of Product Engineering at Delta-Q Technologies Corp., Vancouver, BC,
Canada.
9. MUSAVI et al.: EVALUATION AND EFFICIENCY COMPARISON OF FRONT END AC-DC PLUG-IN HYBRID CHARGER TOPOLOGIES
Wilson Eberle (S’98–M’07) received the B.Sc.,
M.Sc., and Ph.D. degrees from the Department
of Electrical and Computer Engineering, Queen’s
University, Kingston, ON, Canada, in 2000, 2003,
and 2008, respectively.
From 1997 to 1999, he was an Engineering Co-Op
Student at Ford Motor Company, Windsor, ON, and
at Astec Advanced Power Systems, Nepean, ON.
He is currently an Assistant Professor in the School
of Engineering, University of British Columbia,
Kelowna, BC, Canada. He is the author or coauthor
of more than 20 technical papers published in various conferences and IEEE
journals. He is the holder of one U.S. pending patent. He is also the holder of
international pending patents. His current research interests include high-efficiency, high-power density, low-power dc-dc converters, digital control
techniques for dc-dc converters, electromagnetic interference (EMI) filter
design for switching converters, and resonant gate drive techniques for dc-dc
converters.
Dr. Eberle was the recipient of the Ontario Graduate Scholarship and has
won awards from the Power Source Manufacturer’s Association (PSMA) and
the Ontario Centres of Excellence (OCE) to present papers at conferences.
421
William G. Dunford (S’78–M’81–SM’92) was a
student at Imperial College, London, UK, and the
University of Toronto, Toronto, ON, Canada.
Industrial experience includes positions at the
Royal Aircraft Establishment (now Qinetiq),
Schlumberger, and Alcatel. He has had a long term
interest in photovoltaic powered systems and is also
involved in projects in the automotive and energy
harvesting areas. He is a director of Legend Power
Systems, Burnaby, BC, Canada, where he has also
been active in product development. He has also
been a faculty member at Imperial College and the University of Toronto, and is
now on the faculty of the University of British Columbia, Vancouver, Canada.
Dr. Dunford has served in various positions on the Advisory Committee of
the IEEE Power Electronics Society and chaired PESC in 1986 and 2001.