This webinar presentation compares MLCC capacitors to polymer capacitors. It discusses the features and benefits of polymer capacitors, including their lower ESR, wider operating voltage range, and ability to replace multiple MLCCs in some applications. The presentation provides examples of using polymer capacitors in voltage regulator input and output applications. It also discusses parameters to consider when determining if a polymer capacitor can replace MLCCs, such as capacitance, operating voltage, ripple current, and space requirements. Design tools for evaluating capacitor performance are also introduced.
Improved Grid Synchronization Algorithm for DG System using DSRF PLL under Gr...IJERA Editor
Distributed Generation (DG) System is a small scale electric power generation at or near the user’s facility as
opposed to the normal mode of centralized power generation. In order to ensure safe and reliable operation of
power system based on DS, grid synchronization algorithm plays a very important role. This paper presents a
Double Synchronous Reference Frame (DSRF) phase locked loop (PLL) based on synthesis circuit for grid
synchronization of distributed generation (DG) system under grid disturbances aimed to provide an estimation
of the angular frequency and both the positive and negative sequences of the fundamental component of an
unbalanced three-phase signal. The design of this PLL is based on a complete description of the source voltage
involving both positive and negative sequences in stationary coordinates and considering the angular frequency
as an uncertain parameter.
Part of Lecture series on EE321N, Power Electronics-I delivered by me during Fifth Semester of B.Tech. Electrical Engg., 2012
Z H College of Engg. & Technology, Aligarh Muslim University, Aligarh
Please comment and feel free to ask anything related. Thanks!
Contents of this presentation:
General Introduction to IGBT
IGBT Equivalent Circuit
IGBT Output Characteristics
IGBT usage as a Switch
IGBT Datasheet
IGBT Applications
IGBT Power Losses
Some FAQs about IGBTs
Improved Grid Synchronization Algorithm for DG System using DSRF PLL under Gr...IJERA Editor
Distributed Generation (DG) System is a small scale electric power generation at or near the user’s facility as
opposed to the normal mode of centralized power generation. In order to ensure safe and reliable operation of
power system based on DS, grid synchronization algorithm plays a very important role. This paper presents a
Double Synchronous Reference Frame (DSRF) phase locked loop (PLL) based on synthesis circuit for grid
synchronization of distributed generation (DG) system under grid disturbances aimed to provide an estimation
of the angular frequency and both the positive and negative sequences of the fundamental component of an
unbalanced three-phase signal. The design of this PLL is based on a complete description of the source voltage
involving both positive and negative sequences in stationary coordinates and considering the angular frequency
as an uncertain parameter.
Part of Lecture series on EE321N, Power Electronics-I delivered by me during Fifth Semester of B.Tech. Electrical Engg., 2012
Z H College of Engg. & Technology, Aligarh Muslim University, Aligarh
Please comment and feel free to ask anything related. Thanks!
Contents of this presentation:
General Introduction to IGBT
IGBT Equivalent Circuit
IGBT Output Characteristics
IGBT usage as a Switch
IGBT Datasheet
IGBT Applications
IGBT Power Losses
Some FAQs about IGBTs
Fault analysis on three phase system by auto reclosing mechanismeSAT Journals
Abstract In any electrical system, due to overvoltage or over current line--ground fault, line to line fault, line-line-line fault and line-line-line-ground faults occur. The electrical substation is supply the power to the consumers means industries or domestic can have failures due to any of the fault which can be temporary or permanent. These faults lead to damage to the power system equipment. In this work, effort has made to design an reclosing mechanism in case of permanent or temporary fault. The TimerIc-555 has been used to give the time duration of fault. Circuit breaker is used for disconnecting the line at fault instant and connecting on clearance of fault. Reclosing mechanism resets the supply line after small interruption in the event of temporary fault or it remains in tripped condition in case of permanent fault. Keywords: Fault Analysis, Timer 555, Auto Reclosing Mechanism
A gate turn-off thyristor is a special type of thyristor, which is a high-power semiconductor device. It was invented by General Electric. GTOs, as opposed to normal thyristors, are fully controllable switches that can be turned on and off by their third lead, the gate lead. http://bit.ly/2PIOIQM
An improved design of CMOS dynamic latch comparator with dual input dual output with a simple
design of three stages is represented. The basic disadvantages of latch type comparators are overcome by
producing an edge triggered comparison. The circuit is designed for a resolution of 300nV and the power
consumption is reduced to 450uW. It is designed for 1.8V DC supply voltage and 1 MHz clock frequency for
PVT variations. The simulation of the comparator is done in Cadence® Virtuoso Analog Design Environment
using 180nm technology. The error quotient is reduced less than 5% by adding a buffer stage. The delay is
brought down to 5nS. The active area appreciably is reduced. Layout of the proposed comparator has been
simulated in Cadence® Virtuoso Layout XL Design Environment. DRC and LVS have been verified.
A Five Parameter Analytical Curvefit Model for Open Circuit Voltage Variation...lalitpatnaik
Slides associated with paper of the same title presented at PEDES 2018, Chennai, India.
Full paper available here: https://ieeexplore.ieee.org/abstract/document/8707806
If you would like to have a copy of the paper but do not have access, you can contact the first author directly at Twitter (@lalitpatnaik) or Mastodon (@lalitpatnaik@mastodon.cloud)
KEMET Webinar - 0805 and 1206 footprints now available with higher rated volt...Markus Trautz
The "evergreen" application requirement for miniaturization has driven the development of small case size Polymer Capacitors to rated voltage levels of 25V now. In case sizes 0805 (4.7µF/25V) and 1206 (="A Case" footprint with max. height of 1.2 mm, 10µF/25V) customers can now benefit from the stable capacitance with DC voltage applied as well as the usage for application voltages up to 22.5V in case sizes usually known from Multi-Layer Ceramic Capacitors (MLCC´s).
With the MLCC technology undergoing changes towards even smaller case sizes and facing extended lead times, small case size Polymer Capacitors can represent an interesting alternative for your Capacitance requirement.
Fault analysis on three phase system by auto reclosing mechanismeSAT Journals
Abstract In any electrical system, due to overvoltage or over current line--ground fault, line to line fault, line-line-line fault and line-line-line-ground faults occur. The electrical substation is supply the power to the consumers means industries or domestic can have failures due to any of the fault which can be temporary or permanent. These faults lead to damage to the power system equipment. In this work, effort has made to design an reclosing mechanism in case of permanent or temporary fault. The TimerIc-555 has been used to give the time duration of fault. Circuit breaker is used for disconnecting the line at fault instant and connecting on clearance of fault. Reclosing mechanism resets the supply line after small interruption in the event of temporary fault or it remains in tripped condition in case of permanent fault. Keywords: Fault Analysis, Timer 555, Auto Reclosing Mechanism
A gate turn-off thyristor is a special type of thyristor, which is a high-power semiconductor device. It was invented by General Electric. GTOs, as opposed to normal thyristors, are fully controllable switches that can be turned on and off by their third lead, the gate lead. http://bit.ly/2PIOIQM
An improved design of CMOS dynamic latch comparator with dual input dual output with a simple
design of three stages is represented. The basic disadvantages of latch type comparators are overcome by
producing an edge triggered comparison. The circuit is designed for a resolution of 300nV and the power
consumption is reduced to 450uW. It is designed for 1.8V DC supply voltage and 1 MHz clock frequency for
PVT variations. The simulation of the comparator is done in Cadence® Virtuoso Analog Design Environment
using 180nm technology. The error quotient is reduced less than 5% by adding a buffer stage. The delay is
brought down to 5nS. The active area appreciably is reduced. Layout of the proposed comparator has been
simulated in Cadence® Virtuoso Layout XL Design Environment. DRC and LVS have been verified.
A Five Parameter Analytical Curvefit Model for Open Circuit Voltage Variation...lalitpatnaik
Slides associated with paper of the same title presented at PEDES 2018, Chennai, India.
Full paper available here: https://ieeexplore.ieee.org/abstract/document/8707806
If you would like to have a copy of the paper but do not have access, you can contact the first author directly at Twitter (@lalitpatnaik) or Mastodon (@lalitpatnaik@mastodon.cloud)
KEMET Webinar - 0805 and 1206 footprints now available with higher rated volt...Markus Trautz
The "evergreen" application requirement for miniaturization has driven the development of small case size Polymer Capacitors to rated voltage levels of 25V now. In case sizes 0805 (4.7µF/25V) and 1206 (="A Case" footprint with max. height of 1.2 mm, 10µF/25V) customers can now benefit from the stable capacitance with DC voltage applied as well as the usage for application voltages up to 22.5V in case sizes usually known from Multi-Layer Ceramic Capacitors (MLCC´s).
With the MLCC technology undergoing changes towards even smaller case sizes and facing extended lead times, small case size Polymer Capacitors can represent an interesting alternative for your Capacitance requirement.
KEMET Webinar -High voltage ceramics capacitors, shocking!!!Ivana Ivanovska
High Voltage Ceramics Capacitors, Shocking!!! So you want to ramp up the voltage in your design. Have you considered what type of ceramic capacitor to use? Have you taken steps to prevent surface arcing? KEMET is a leader in high voltage ceramic capacitors providing solutions for commercial, automotive, military, and industrial applications. This webinar will review key considerations when designing in a high voltage ceramic capacitor along with ways to miniaturize your circuit without the fear of arcing.
Wilmer provides an annual update to KEMET's Capacitor Design Tools during APEC 2017. He reviewed basic and new functions in K-SIM, our capacitor simulator. There is an introduction to Engineering Center (this site) and our newest tool: ComponentEdge. That is a search engine that makes it very simple to find the capacitor you need for your design. Check out how easy it is to do searches.
Capacitors are more than just a couple electrode plates separated by a dielectric. KEMET offers an interactive online tool to simulate capacitor performance with Voltage, Temperature, and Frequency. The tool is available at http://ksim.kemet.com/.
This presentation reviews some of K-SIM's capabilities and techniques for using it.
Neil Kirby: VSC HVDC Transmission and Emerging Technologies in DC GridsEnergyTech2015
EnergyTech2015.com
TERRESTRIAL POWER TECHNOLOGY I
Track 2 Session 1 Moderator: Dr. Allen Morinec, First Energy
This session will explore technologies developed to improve the terrestrial power utility grid including; fast protection system methods to find and clear faults and dc protection system devices to enable dc distribution systems.
Neil Kirby: Paper 1: VSC HVDC Transmission and Emerging Technologies In DC Grids
Zach Summerford: Paper 2: Ultra-High Speed Relaying for Transmission Lines
KEMET Webinar - KEMET Electrolytic ALC70 and ALC80 seriesIvana Ivanovska
Learn about KEMET'S new Snap-In Electrolytic Capacitor series with increased CV values. KEMET High CV snap-in capacitors offer high performance and reliability in a wide range of case sizes and voltage ratings, featuring high ripple currents and long-life performance. Volumetric efficiency ensures the maximum capacitance capability in a smaller size.
KEMET Webinar - What’s a Ceramic DC-LINK Capacitor Doing in My Power Converter?Ivana Ivanovska
To meet the growing demand of higher efficiency power converters, designers are utilizing fast switching wide bandgap (WBG) semiconductors which operate at higher voltages, temperatures, and frequencies. However, just implementing WBG semiconductors are not enough to realize the maximum potential of new converter topologies. Designers must also select the proper passive components such as capacitors to support DC-LINK, snubber, and resonator applications. This webinar will review the wide bandgap semiconductor trend and how it impacts selection of capacitors for high efficiency designs.
To meet the growing demand of higher efficiency power converters, designers are utilizing fast switching wide bandgap (WBG) semiconductors which operate at higher voltages, temperatures, and frequencies. However, just implementing WBG semiconductors are not enough to realize the maximum potential of new converter topologies. Designers must also select the proper passive components such as capacitors to support DC-LINK, snubber, and resonator applications. This webinar will review the wide bandgap semiconductor trend and how it impacts selection of capacitors for high efficiency designs.
At PEIM 2016, KEMET presented work related to our BME C0G technology. This evaluation is driven by the rising need for a suitable Ceramic DC Link Capacitor for use in wide bandgap applications.
The presentation covers KEMET's previous application of BME C0G technology in similar areas.
• Worked under the guidance of a senior technology specialist in a highly professional environment. Created a Parts Stress Analysis (PSA) library of 2670+ components.
• An estimation showed that the Reliability Maintainability System Safety (RMSS) team saved 15hrs per 100 component types in performing PSA using my parts library.
• Created a reliability prediction library and time savings was found to be approximately 30 minutes for 19 components. Studied a commonly used push-pull DC-DC convertor and performed theoretical calculation for PSA.
• The circuit was simulated in LTspice and OrCAD Pspice lite. The theoretical calculations and simulated values were compared and a maximum variance of 7.5% was observed.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
