Delay dependent stability of single-loop controlled grid-connected inverters ...LeMeniz Infotech
Delay-Dependent Stability of Single-Loop Controlled Grid-Connected Inverters with LCL Filters
LCL filters have been widely used for grid-connected inverters. However, the problem that how time delay affects the stability of digitally controlled grid-connected inverters with LCL filters has not been fully studied. In this paper, a systematic study is carried out on the relationship between the time delay and stability of single-loop controlled grid-connected inverters that employ inverter current feedback (ICF) or grid current feedback (GCF). The ranges of time delay for system stability are analyzed and deduced in the continuous s-domain and discrete z-domain. It is shown that in the optimal range, the existence of time delay weakens the stability of the ICF loop, whereas a proper time delay is required for the GCF loop. The present work explains, for the first time, why different conclusions on the stability of ICF loop and GCF loop have been drawn in previous studies. To improve system stability, a linear predictor-based time delay reduction method is proposed for ICF, while a time delay addition method is used for GCF. A controller design method is then presented that guarantees adequate stability margins. The delay-dependent stability study is verified by simulation and experiment.
Web : http://www.lemenizinfotech.com
Web : http://ieeemaster.com
Web : http://www.lemenizinfotech.com/power-system-ieee-projects-2016-2017/
Web : http://ieeemaster.com/power-system-ieee-projects-2016-2017/
Address: 36, 100 Feet Road(Near Indira Gandhi Statue), Natesan Nagar, Pondicherry-605 005
Contact numbers: +91 95663 55386, 99625 88976 (0413) 420 5444
Mail : projects@lemenizinfotech.com
Mobile : 9566355386 / 9962588976
Review on Environment Monitoring System and Energy EfficiencyIJERA Editor
The Environment monitoring is one of the applications of wireless sensor network. The most serious environment pollution is air pollution because different air pollutant causes damage to human health and causes global warming. To avoid such effect on human health and climate change Environment monitoring systems are used. This paper provides the short overview of different environmental air pollution monitoring systems and Energy efficiency in WSN to reduced the power consumption of system.
Bell Labs Ireland research on small cells [Davide Cherubini]Keith
Davide Cherubini from Alcatel-Lucent Bell Labs Ireland (BLI) talks about their work on increasing energy efficiency in cellular networks through 'green radio' solutions.
Delay dependent stability of single-loop controlled grid-connected inverters ...LeMeniz Infotech
Delay-Dependent Stability of Single-Loop Controlled Grid-Connected Inverters with LCL Filters
LCL filters have been widely used for grid-connected inverters. However, the problem that how time delay affects the stability of digitally controlled grid-connected inverters with LCL filters has not been fully studied. In this paper, a systematic study is carried out on the relationship between the time delay and stability of single-loop controlled grid-connected inverters that employ inverter current feedback (ICF) or grid current feedback (GCF). The ranges of time delay for system stability are analyzed and deduced in the continuous s-domain and discrete z-domain. It is shown that in the optimal range, the existence of time delay weakens the stability of the ICF loop, whereas a proper time delay is required for the GCF loop. The present work explains, for the first time, why different conclusions on the stability of ICF loop and GCF loop have been drawn in previous studies. To improve system stability, a linear predictor-based time delay reduction method is proposed for ICF, while a time delay addition method is used for GCF. A controller design method is then presented that guarantees adequate stability margins. The delay-dependent stability study is verified by simulation and experiment.
Web : http://www.lemenizinfotech.com
Web : http://ieeemaster.com
Web : http://www.lemenizinfotech.com/power-system-ieee-projects-2016-2017/
Web : http://ieeemaster.com/power-system-ieee-projects-2016-2017/
Address: 36, 100 Feet Road(Near Indira Gandhi Statue), Natesan Nagar, Pondicherry-605 005
Contact numbers: +91 95663 55386, 99625 88976 (0413) 420 5444
Mail : projects@lemenizinfotech.com
Mobile : 9566355386 / 9962588976
Review on Environment Monitoring System and Energy EfficiencyIJERA Editor
The Environment monitoring is one of the applications of wireless sensor network. The most serious environment pollution is air pollution because different air pollutant causes damage to human health and causes global warming. To avoid such effect on human health and climate change Environment monitoring systems are used. This paper provides the short overview of different environmental air pollution monitoring systems and Energy efficiency in WSN to reduced the power consumption of system.
Bell Labs Ireland research on small cells [Davide Cherubini]Keith
Davide Cherubini from Alcatel-Lucent Bell Labs Ireland (BLI) talks about their work on increasing energy efficiency in cellular networks through 'green radio' solutions.
Review of smart sensor networks for environment monitoringeSAT Journals
Abstract This review article focuses on the various environment monitoring systems developed over the years. The development of any monitoring system is dependent on certain key factors namely cost of the system, energy efficiency of the system, signal to noise ratio, interference rejection during varying atmospheric conditions. The complexity of any system depends upon the number of nodes the system requires to monitor, the more the number of nodes the more complex structure becomes. If we use smart sensor network with each node independently functioning and transmitting data to one parent node that performs required processing the complexity decreases. Keywords: Zig bee, raspberry pi, smart sensor network, wireless communication, embedded controller, ARM, Wi-fi
Unit Commitment Using a Hybrid Differential Evolution with Triangular Distribution Factor for Adaptive Crossover
N. Malla Reddy* K. Ramesh Reddy** and N. V. Ramana***
Distribution Automation - Emerging Trends and Challenges Providing an overview of challenges, further providing a detail by introducing IEC 61850 standard and finally concluding by discussing the need of a maker approach or workshops thus enabling better skills and development at institutions.
The history and nature of the traditional power grid is large-scale, bulk power generation concentrated at large power plants. The addition of DER (solar and wind) creates difficult control, subsystem management and safety challenges.
The DER Integration Testbed provides a simulated smart grid microcosm demonstrating many technologies and protocols: Data Distribution Service (DDS), Open Field Message Bus (OpenFMB), Time-Sensitive Networks (TSN), advanced analytics and how they can be combined and deployed in the field.
Presentation from the EPRI-Sandia Symposium on Secure and Resilient Microgrids: Microgrids Lessons Learned-So Far, presented by Merrill Smith and Microgrid Exchange Group, DOE, Baltimore, MD, August 29-31, 2016.
Roof top solar PV connected DC micro grids as smart gridsBrhamesh Alipuria
The roof top solar systems are becoming popular these days with the need for reliable power and reducing costs. Further, with recent trends to shift towards smart grids; a new system layout has been proposed which is based on the concept of DC micro grids
Presentation from the EPRI-Sandia Symposium on Secure and Resilient Microgrids: Power Systems Engineering Research and Development, presented by Dan Ton, DOE OE, Baltimore, MD, August 29-31, 2016.
The history and nature of the traditional power grid is large-scale, bulk power generation concentrated at large power plants. The addition of DER (solar and wind) creates difficult control, subsystem management and safety challenges.
The Microgrid Testbed provides a simulated smart grid microcosm demonstrating many technologies and protocols: Data Distribution Service (DDS), Open Field Message Bus (OpenFMB), Time-Sensitive Networks (TSN), advanced analytics and how they can be combined and deployed in the field.
Integrating Variable Renewable Energy into the Grid key issues and Emerging S...Power System Operation
Introduction
Why is grid integration an important topic?
Trends:
Increasing energy demand
Urbanization
Climate change mitigation targets
Need for grid modernization
Every power system has
characteristics that promote and
inhibit integration of variable RE
Grid integration is the practice of
developing efficient ways to
deliver high penetration levels of
variable RE to the grid
Source:
“Renewable Energy
Futures” 2012
Review of smart sensor networks for environment monitoringeSAT Journals
Abstract This review article focuses on the various environment monitoring systems developed over the years. The development of any monitoring system is dependent on certain key factors namely cost of the system, energy efficiency of the system, signal to noise ratio, interference rejection during varying atmospheric conditions. The complexity of any system depends upon the number of nodes the system requires to monitor, the more the number of nodes the more complex structure becomes. If we use smart sensor network with each node independently functioning and transmitting data to one parent node that performs required processing the complexity decreases. Keywords: Zig bee, raspberry pi, smart sensor network, wireless communication, embedded controller, ARM, Wi-fi
Unit Commitment Using a Hybrid Differential Evolution with Triangular Distribution Factor for Adaptive Crossover
N. Malla Reddy* K. Ramesh Reddy** and N. V. Ramana***
Distribution Automation - Emerging Trends and Challenges Providing an overview of challenges, further providing a detail by introducing IEC 61850 standard and finally concluding by discussing the need of a maker approach or workshops thus enabling better skills and development at institutions.
The history and nature of the traditional power grid is large-scale, bulk power generation concentrated at large power plants. The addition of DER (solar and wind) creates difficult control, subsystem management and safety challenges.
The DER Integration Testbed provides a simulated smart grid microcosm demonstrating many technologies and protocols: Data Distribution Service (DDS), Open Field Message Bus (OpenFMB), Time-Sensitive Networks (TSN), advanced analytics and how they can be combined and deployed in the field.
Presentation from the EPRI-Sandia Symposium on Secure and Resilient Microgrids: Microgrids Lessons Learned-So Far, presented by Merrill Smith and Microgrid Exchange Group, DOE, Baltimore, MD, August 29-31, 2016.
Roof top solar PV connected DC micro grids as smart gridsBrhamesh Alipuria
The roof top solar systems are becoming popular these days with the need for reliable power and reducing costs. Further, with recent trends to shift towards smart grids; a new system layout has been proposed which is based on the concept of DC micro grids
Presentation from the EPRI-Sandia Symposium on Secure and Resilient Microgrids: Power Systems Engineering Research and Development, presented by Dan Ton, DOE OE, Baltimore, MD, August 29-31, 2016.
The history and nature of the traditional power grid is large-scale, bulk power generation concentrated at large power plants. The addition of DER (solar and wind) creates difficult control, subsystem management and safety challenges.
The Microgrid Testbed provides a simulated smart grid microcosm demonstrating many technologies and protocols: Data Distribution Service (DDS), Open Field Message Bus (OpenFMB), Time-Sensitive Networks (TSN), advanced analytics and how they can be combined and deployed in the field.
Integrating Variable Renewable Energy into the Grid key issues and Emerging S...Power System Operation
Introduction
Why is grid integration an important topic?
Trends:
Increasing energy demand
Urbanization
Climate change mitigation targets
Need for grid modernization
Every power system has
characteristics that promote and
inhibit integration of variable RE
Grid integration is the practice of
developing efficient ways to
deliver high penetration levels of
variable RE to the grid
Source:
“Renewable Energy
Futures” 2012
ENERGY MANAGEMENT SYSTEM FOR CRITICAL LOADS USING POWER ELECTRONICSrenukasningadally
The work aims at an Energy Management System (EMS) for Critical loads using Power Electronics. Here hybrid power sources (Grid and Solar cells) with battery have been used to supply the power to the critical loads at all times, suppose an end user increases his critical loads or non-critical loads this EMS system helps to maintain continuous power supply to these loads. Solar or Photovoltaic cells have been used for storing energy through battery and these batteries will discharge the stored energy at two conditions, one is when grid is shut down for short duration or for a long duration and another one is when there sudden increase in load by users
Class-20: These slides present the related standards and specifications for the smart grid. Details about each standards can be accessed from the reference book specified.
Similar to Efficient energy management system for domestic load using fuzzy logic control (20)
These are the basics of Linear circuit analysis that will help you to strong your basics in this subject.Guideline for this book is 'Electric Circuits, by Nilsson & Riedel 2009'.
Hope this will help you.
These are the basics of Linear circuit analysis that will help you to strong your basics in this subject.Guideline for this book is 'Electric Circuits, by Nilsson & Riedel 2009'.
Hope this will help you.
These are the basics of Linear circuit analysis that will help you to strong your basics in this subject.Guideline for this book is 'Electric Circuits, by Nilsson & Riedel 2009'.
Hope this will help you.
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
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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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.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
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/
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.
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.
Efficient energy management system for domestic load using fuzzy logic control
1. Efficient Energy Management System for
Domestic Load using Fuzzy Logic
Control
Group members
Talha Mujahid
Naveed Amin
Awais Azeem
Muneeb Zahid
Supervisor: Engr. Waheed Aftab Khan
1
3. Introduction
Micro Grid collection of several micro sources
Renewable energy resources widely available
Energy management system controls through a set of algorithms
3
4. Introduction
Set of rules are developed in fuzzy logic.
Fuzzy controllers are very simple conceptually.
They consist of an input stage, a processing stage,
and an output stage.
The processing stage invokes each appropriate
rule and generates a result for each, then combines
the results of the rules. Finally, the output stage
converts the combined result back into a specific
control output value.
Develop sophisticated control systems.
4
Department of Electrical Engineering
5. Introduction
5
Needs and Problems
• Electricity shortfall
• Excessive amount of Inrush current/transient power.
• Expensive and short lifetime of batteries
• High tariff rates
• National grid uses fossil fuels that are decreasing day
by day
• MG generation is free of cost
6. Introduction
Classical Solution
Change battery every year/Use very high
expensive batteries
Proposed Solution
Overcome the transients of power using
capacitor bank that will improve overall
efficiency of MG.
6
10. Deliverables and Objectives
To develop a system which will improve like
Improve battery lifetime
Reduce electricity bills
Economical beneficial
Reliable system
10
12. References
R.H. Lasseter, "Micro Grids", IEEE Power Engineering Society Winter Meeting,
Volume 1, pp. 305-308, (2002)
J. LA gorse, M. G. Samos, and A.Miraoui, "A Multivalent Fuzzy Logic-Based
Energy Management of Hybrid Systems", IEEE Trans Industry Applications, Vol.
45, No. 6,pp:2123-2129 Dec 2009
S. D. J. McArthur, E. M. Davidson, V. M. Patterson, A. L. Dimes, D. Hatziargyriou,
and F. Ponca, "Multi-agent systems for power engineering applications-Part 1:
Concepts, approaches, and technical challenges," IEEE Trans. Power Sees., vol.
22, no. 4, pp. 1743-1752, Nov. 2007.
12