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Home Events Events Archive 2012 Z-Source Converters for Advanced Power Conditioning of PV, FC and Wind Power

Z-Source Converters for Advanced Power Conditioning of PV, FC and Wind Power

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  • Visitor Seminars
When Aug 15, 2012
from 12:00 PM to 01:30 PM
Where ENGR. IV Bldg., Tesla Rm. 53-125
Contact Name
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Fang Z. Peng
Michigan State University



Alternate energy sources such as solar, fuel cell, and wind have a wide voltage change range due to the nature of these sources. Photovoltaic cell voltage varies with temperature and irradiation. Fuel cell stack voltage drops greatly with load current. And wind generator voltage varies with wind speed and control. The traditional voltage source inverter that has been the power conversion technology for these energy sources cannot cope with the wide voltage change and often requires additional voltage boost by additional dc-dc converter, which increases cost, system complexity, and power loss. The Z-source converter/inverter systems can solve this problem. This single stage power conversion technology provides a great alternative with lower cost, higher reliability, and higher efficiency. System configurations, operating principles, features and results will be presented for advanced power conditioning of alternate energy systems.

We proposed the Z-source conversion concept several years ago, which has become a hot research topic of the field. Currently, there are over 800 papers published by many peers from around the world and the Z-source concept has been extended to the entire power conversion spectrum: from dc-ac inversion to ac-dc rectification, from ac-ac to dc- dc conversion, from matrix converters to multilevel converters. In this talk, we will further provide a summary of this new technology and discuss its research directions/trends.


Fang Zheng Peng received the B.S. degree in electrical engineering from Wuhan University, China, in 1983 and the M.S. and Ph.D. Degrees in electrical engineering from Nagaoka University of Technology, Japan, in 1987 and 1990, respectively. He joined Toyo Electric Manufacturing Company, Ltd., from 1990 to 1992 as a research scientist, was engaged in research and development of active power filters, flexible ac transmission systems (FACTS) applications and motor drives. From 1992 to 1994, he worked with Tokyo Institute of Technology as a Research Assistant Professor, initiated a multilevel inverter program for FACTS applications and a speed-sensorless vector control project. In 2000, he joined Michigan State University as an Associate Professor and now a full professor of the Department of Electrical and Computer Engineering. Dr. Peng received many awards including the 2009 Best Paper Award in the IEEE Transactions on Power Electronics, the 2011, 2010, 1996 and 1995 Prize Paper Award of Industrial Power Converter Committee in IEEE/IAS; the 1996 Advanced Technology Award of the Inventors Clubs of America, Inc., the International Hall of Fame; the 1991 First Prize Paper Award in IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS; and the 1990 Best Paper Award in the Transactions of the IEE of Japan, the Promotion Award of Electrical Academy. He has served the IEEE Power Electronics Society in many capacities: such as Chair of Technical Committee for Rectifiers and Inverters an Associate Editor for the IEEE Power Electronics Transactions, Region 1-6 Liaison, Member-at-Large, Power Electronics Society Awards Chair, Fellow Evaluation Committee member, etc. He was elevated to an IEEE fellow in 2004. Dr. Peng holds over 10 patents and two of them have been used extensively in industry.

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