Cascaded Microinverter Pv System For Reduced Cost
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Cascaded Microinverter Pv System For Reduced Cost
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Author :
language : en
Publisher:
Release Date : 2013
Cascaded Microinverter Pv System For Reduced Cost written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
In this project, a team led by Delphi will develop and demonstrate a novel cascaded photovoltaic (PV) inverter architecture using advanced components. This approach will reduce the cost and improve the performance of medium and large-sized PV systems. The overall project objective is to develop, build, and test a modular 11-level cascaded three-phase inverter building block for photovoltaic applications and to develop and analyze the associated commercialization plan. The system will be designed to utilize photovoltaic panels and will supply power to the electric grid at 208 VAC, 60 Hz 3-phase. With the proposed topology, three inverters, each with an embedded controller, will monitor and control each of the cascade sections, reducing costs associated with extra control boards. This report details the final disposition on this project.
Advanced Single Phase Pv Inverters
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Author : Qingyun Huang (Ph. D.)
language : en
Publisher:
Release Date : 2018
Advanced Single Phase Pv Inverters written by Qingyun Huang (Ph. D.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
The high-efficiency and high-density single phase photovoltaic (PV) inverters are drawing more and more interests for the residential PV systems. This dissertation focuses on the innovations, designs, analysis, hardware implementations and testing of the advanced single-phase PV inverters for residential applications. The most popular single-phase PV inverter products for residential application are the centralized transformerless string inverters. The common mode (CM) leakage current is the major issue for the transformerless PV inverter. Various topologies are discussed by the industry and the academia. Due the Google “Little Box Challenge”, several teams including the winner of the finalist reported a new transformerless PV inverter topology: the symmetrical dual-Buck H-bridge GaN inverter. With the zero-voltage-switching (ZVS) technique and the GaN devices, this topology can achieve high efficiency and high power density. However, the current control with cycle-by-cycle ZVS for this inverter is a big challenge. In this dissertation, a variable frequency average current mode control with a variable frequency pulse-width-modulation (PWM) is proposed for this inverter topology. The proposed current control is highly immune to the noises. The reliability for ZVS of this inverter is significantly improved. In addition, the cost and the complexity for the controller is also reduced. The proposed variable frequency PWM and control are fundamental to all PWM synchronous converters. They can be applied to any synchronous half-bridge type QSW ZVS converters, such as other inverter topologies, bridgeless PFC rectifiers or DC/DC converters which consist of the synchronous half-bridges. Besides, the proposed PWM and control have the potential to be implemented with analog circuits. The centralized transformerless string PV inverter topologies have low cost and high efficiency. However, the string inverters not only suffer the high voltage DC arc issue, but also cannot achieve the individual maximum power point tracking (MPPT). The other commercial products, such as the DC optimizers and the microinverters, also have some major drawbacks. The DC optimizers also suffer the high voltage DC arc issue. The microinverters suffer the issues of low efficiency and high cost. The cascaded H-bridge multilevel inverter can achieve the high efficiency, the high density, the low cost and the elimination of the high voltage DC arc issue. This inverter is a great candidate for the next generation of the residential PV inverter products. However, the individual DC link voltage control is a big challenge. In this dissertation, an innovative feedforward proportional carrier-based pulse-width-modulation (PWM) is proposed. With this PWM, only one voltage loop controller is needed in the outer voltage loop. The individual DC link voltage regulation can be realized by the proposed PWM and the single voltage loop controller. The proposed PWM is a fundamental technology for multilevel converters. It can be applied to other multilevel converters. A 99% efficient cascaded H-bridge PV inverter prototype is demonstrated with the proposed feedforward PWM. The cascaded H-bridge inverter has another drawback. It has the minimum requirement for the count of the PV panels since this inverter is a step-down converter. It significantly reduces the flexibility of the count of the PV panels. Therefore, a new PV inverter topology, the dual-mode cascaded Buck-Boost multilevel inverter, is proposed to overcome this drawback. This inverter not only conserves all the advantages of the cascaded H-bridge inverter, but also significantly improves the flexibility of the count of the PV panels. With the emerging 600V GaN devices and the dual-mode operation, the switching loss of the AC switches is significantly reduced. Finally, based on this topology, a 2kW multiport PV inverter designed in this dissertation demonstrates the superior performance, including higher efficiency, higher density and lower cost, compared with the state-of-art 2kW microinverter system
Power Electronics And Power Quality
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Author : José Gabriel Oliveira Pinto
language : en
Publisher: MDPI
Release Date : 2020-04-23
Power Electronics And Power Quality written by José Gabriel Oliveira Pinto and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-04-23 with Technology & Engineering categories.
Power quality (PQ) is receiving more and more attention from consumers, distribution system operators, transmission system operators, and other entities related to electrical power systems. As PQ problems have direct implications for business productivity, causing high economic losses, the research and development monitoring technologies and power electronics solutions that ensure the PQ of the power systems are matters of utmost importance. This book is a collection of high quality papers published in the “Power Electronics and Power Quality” Special Issue of the journal Energies. It reflects on the latest investigations and the new trends in this field.
Modular Multilevel Converters
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Author : Sixing Du
language : en
Publisher: John Wiley & Sons
Release Date : 2018-02-22
Modular Multilevel Converters written by Sixing Du and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-02-22 with Science categories.
An invaluable academic reference for the area of high-power converters, covering all the latest developments in the field High-power multilevel converters are well known in industry and academia as one of the preferred choices for efficient power conversion. Over the past decade, several power converters have been developed and commercialized in the form of standard and customized products that power a wide range of industrial applications. Currently, the modular multilevel converter is a fast-growing technology and has received wide acceptance from both industry and academia. Providing adequate technical background for graduate- and undergraduate-level teaching, this book includes a comprehensive analysis of the conventional and advanced modular multilevel converters employed in motor drives, HVDC systems, and power quality improvement. Modular Multilevel Converters: Analysis, Control, and Applications provides an overview of high-power converters, reference frame theory, classical control methods, pulse width modulation schemes, advanced model predictive control methods, modeling of ac drives, advanced drive control schemes, modeling and control of HVDC systems, active and reactive power control, power quality problems, reactive power, harmonics and unbalance compensation, modeling and control of static synchronous compensators (STATCOM) and unified power quality compensators. Furthermore, this book: Explores technical challenges, modeling, and control of various modular multilevel converters in a wide range of applications such as transformer and transformerless motor drives, high voltage direct current transmission systems, and power quality improvement Reflects the latest developments in high-power converters in medium-voltage motor drive systems Offers design guidance with tables, charts graphs, and MATLAB simulations Modular Multilevel Converters: Analysis, Control, and Applications is a valuable reference book for academic researchers, practicing engineers, and other professionals in the field of high power converters. It also serves well as a textbook for graduate-level students.
Emerging Converter Topologies And Control For Grid Connected Photovoltaic Systems
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Author : Dmitri Vinnikov
language : en
Publisher: MDPI
Release Date : 2021-02-26
Emerging Converter Topologies And Control For Grid Connected Photovoltaic Systems written by Dmitri Vinnikov and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-02-26 with Technology & Engineering categories.
Continuous cost reduction of photovoltaic (PV) systems and the rise of power auctions resulted in the establishment of PV power not only as a green energy source but also as a cost-effective solution to the electricity generation market. Various commercial solutions for grid-connected PV systems are available at any power level, ranging from multi-megawatt utility-scale solar farms to sub-kilowatt residential PV installations. Compared to utility-scale systems, the feasibility of small-scale residential PV installations is still limited by existing technologies that have not yet properly address issues like operation in weak grids, opaque and partial shading, etc. New market drivers such as warranty improvement to match the PV module lifespan, operation voltage range extension for application flexibility, and embedded energy storage for load shifting have again put small-scale PV systems in the spotlight. This Special Issue collects the latest developments in the field of power electronic converter topologies, control, design, and optimization for better energy yield, power conversion efficiency, reliability, and longer lifetime of the small-scale PV systems. This Special Issue will serve as a reference and update for academics, researchers, and practicing engineers to inspire new research and developments that pave the way for next-generation PV systems for residential and small commercial applications.
Power Electronics For Green Energy Conversion
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Author : Mahajan Sagar Bhaskar
language : en
Publisher: John Wiley & Sons
Release Date : 2022-08-09
Power Electronics For Green Energy Conversion written by Mahajan Sagar Bhaskar and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-08-09 with Science categories.
POWER ELECTRONICS for GREEN ENERGY CONVERSION Written and edited by a team of renowned experts, this exciting new volume explores the concepts and practical applications of power electronics for green energy conversion, going into great detail with ample examples, for the engineer, scientist, or student. Power electronics has emerged as one of the most important technologies in the world and will play a big role in the conversion of the present power grid systems into smart grids. Applications like HVDC systems, FACTs devices, uninterruptible power systems, and renewable energy systems totally rely on advances in power electronic devices and control systems. Further, the need for renewable energy continues to grow, and the complete departure of fossil fuels and nuclear energy is not unrealistic thanks to power electronics. Therefore, the increasingly more important role of power electronics in the power sector industry remains paramount. This groundbreaking new volume aims to cover these topics and trends of power electronic converters, bridging the research gap on green energy conversion system architectures, controls, and protection challenges to enable their wide-scale implementation. Covering not only the concepts of all of these topics, the editors and contributors describe real-world implementation of these ideas and how they can be used for practical applications. Whether for the engineer, scientist, researcher, or student, this outstanding contribution to the science is a must-have for any library.
Emerging Converter Topologies And Control For Grid Connected Photovoltaic Systems
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Author : Dmitri Vinnikov
language : en
Publisher:
Release Date : 2021
Emerging Converter Topologies And Control For Grid Connected Photovoltaic Systems written by Dmitri Vinnikov and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.
Continuous cost reduction of photovoltaic (PV) systems and the rise of power auctions resulted in the establishment of PV power not only as a green energy source but also as a cost-effective solution to the electricity generation market. Various commercial solutions for grid-connected PV systems are available at any power level, ranging from multi-megawatt utility-scale solar farms to sub-kilowatt residential PV installations. Compared to utility-scale systems, the feasibility of small-scale residential PV installations is still limited by existing technologies that have not yet properly address issues like operation in weak grids, opaque and partial shading, etc. New market drivers such as warranty improvement to match the PV module lifespan, operation voltage range extension for application flexibility, and embedded energy storage for load shifting have again put small-scale PV systems in the spotlight. This Special Issue collects the latest developments in the field of power electronic converter topologies, control, design, and optimization for better energy yield, power conversion efficiency, reliability, and longer lifetime of the small-scale PV systems. This Special Issue will serve as a reference and update for academics, researchers, and practicing engineers to inspire new research and developments that pave the way for next-generation PV systems for residential and small commercial applications.
The Proceedings Of The 16th Annual Conference Of China Electrotechnical Society
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Author : Qingxin Yang
language : en
Publisher: Springer Nature
Release Date : 2022-04-17
The Proceedings Of The 16th Annual Conference Of China Electrotechnical Society written by Qingxin Yang and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-04-17 with Technology & Engineering categories.
This book gathers outstanding papers presented at the 16th Annual Conference of China Electrotechnical Society, organized by China Electrotechnical Society (CES), held in Beijing, China, from September 24 to 26, 2021. It covers topics such as electrical technology, power systems, electromagnetic emission technology, and electrical equipment. It introduces the innovative solutions that combine ideas from multiple disciplines. The book is very much helpful and useful for the researchers, engineers, practitioners, research students, and interested readers.
Proceedings Of The 12th International Conference On Soft Computing For Problem Solving
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Author : Millie Pant
language : en
Publisher: Springer Nature
Release Date :
Proceedings Of The 12th International Conference On Soft Computing For Problem Solving written by Millie Pant and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Advances In Grid Connected Photovoltaic Power Conversion Systems
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Author : Yongheng Yang
language : en
Publisher: Woodhead Publishing
Release Date : 2018-08-21
Advances In Grid Connected Photovoltaic Power Conversion Systems written by Yongheng Yang and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-21 with Science categories.
Advances in Grid-Connected Photovoltaic Power Conversion Systems addresses the technological challenges of fluctuating and unreliable power supply in grid-connected photovoltaic (PV) systems to help students, researchers, and engineers work toward more PV installations in the grid to make society more sustainable and reliable while complying with grid regulations. The authors combine their extensive knowledge and experience in this book to address both the basics of the power electronic converter technology and the advances of such practical electric power conversion systems. This book includes extensive, step-by-step practical application examples to assist students and engineers to better understand the role of power electronics in modern PV applications and solve the practical issues in grid-connected PV systems. Offers a step-by-step modeling approach to solving the practical issues and technological challenges in grid-connected PV systems Provides practical application examples to assist the reader to better understand the role of power electronics in modern PV applications Extends to the most modern technologies for grid-friendly PV systems