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Smart Control of Power Electronic Converters in Photovoltaic Systems

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2012 ASEE Annual Conference & Exposition


San Antonio, Texas

Publication Date

June 10, 2012

Start Date

June 10, 2012

End Date

June 13, 2012



Conference Session

Projects in ECE

Tagged Division

Electrical and Computer

Page Count


Page Numbers

25.1163.1 - 25.1163.17



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Paper Authors


Ahmed Mohamed Florida International University

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Ahmed Mohamed (El-Tallawy) was born in Minia, Egypt, in 1984. He received his B.Sc. degree from the faculty of engineering, Minia University, Minia, Egypt, in 2006. From 2006 to 2009, he was a Research/Teaching Assistant in the faculty of engineering, Minia University. He received a M.Sc. degree from the faculty of engineering, Minia University, Minia, Egypt in 2009. He is currently a Research Assistant in the Electrical and Computer Engineering Department, College of Engineering and Computing, Florida International University, Miami, Fla., USA. His current research interests are DC distribution, renewable energy systems, and electrical power systems. Address: Energy Systems Research Laboratory, Electrical and Computer Engineering Department, College of Electrical and Computer Engineering, Florida International University, 10555 W Flagler Street, Room EC-3925, Miami, Florida 33174, USA. Telephone: +1 305-348-6194; Cell +1 786-975-4524.

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Osama A. Mohammed Florida International University

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Osama A. Mohammed received his M.S. and Ph.D. degrees in electrical engineering from Virginia Polytechnic Institute and State University. He has many years of teaching, curriculum development, research, and industrial consulting experience. He authored and co-authored more than 300 technical papers in the archival literature, as well as in National and International Conference records in addition to additional numerous technical and project reports and monographs. Mohammed specializes in electrical energy systems, especially in areas related to alternate and renewable energy systems. He is also interested in design optimization of electromagnetic devices, artificial intelligence applications to energy systems, and electromagnetic field computations in nonlinear systems for these energy applications. He has current interest in shipboard power systems and integrated motor drives. He is also interested in the application communication and sensor networks for the distributed control of power grids. Mohammed has been successful in obtaining a number of research contracts and grants from industries and federal government agencies. He has current active and funded research programs in several areas funded by the Office of Naval Research and the U.S. Department of Energy. Mohammed is also interested in developing learning environments and educational techniques for Internet based delivery systems and virtual laboratories. Mohammed is a Fellow of IEEE and is a recipient of the 2010 IEEE PES Cyril Veinott Electromechanical Energy Conversion Award. Mohammed is also a Fellow of the Applied Computational Electromagnetic Society. He is Editor of IEEE Transactions on Energy Conversion, IEEE Transactions on Magnetics-Conferences, as well as an Editor of COMPEL. He also received many awards for excellence in research, teaching, and service to the profession and has chaired sessions and programs in numerous international conferences in addition to delivering numerous invited lectures at scientific organizations in around the world. Mohammed serves as the International Steering Committee Chair for the IEEE International Electric Machines and Drives Conference (IEMDC) and the IEEE Biannual Conference on Electromagnetic Field Computation (CEFC). Mohammed was the General Chair of the 2009 IEEE IEMDC conference held in Miami Florida, May 3-6, 2009, and was the Editorial Board Chairman for the IEEE CEFC2010 held in Chicago, Ill., USA, May 9-12, 2010. He was also the General Chairman of the 1996 IEEE International Conference on Intelligent Systems Applications to Power Systems (ISAP'96). Mohammed has chaired the Electric Machinery Committee for IEEE PES and was the Vice Chair and Technical Committee Program Chair for the IEEE PES Electric Machinery Committee for a number of years. He was a member of the IEEE/Power Engineering Society Governing Board (1992-1996) and was the Chairman of the IEEE Power Engineering Society Constitution and Bylaws committee. He also serves as Chairman, Officer or as an active member on several IEEE PES committees, sub-committees, and technical working groups.

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Smart Control of Power Electronic Converters in Photovoltaic Systems This paper presents an overview of the techniques used to control the power electronic converters used tointegrate renewable energy sources to the electric grid. Moreover, a smart fuzzy-PID controller for DC-DC boostconverters, which are the most commonly used converters as voltage regulators in PV systems, is presented. Thisproposed controller maximizes the stable operating range by tuning the PID parameters ultimately at various loadingconditions. Then, a fuzzy logic approach is used to add a factor of intelligence to the controller such that it can moveamong different values of proportional gain (Kp), integral gain (Ki) and derivative gain (Kd) based on the systemconditions. This controller allows optimal control of boost converters at any loading condition with no need toretune parameters or possibility of failure. Moreover, the paper presents a novel technique to move between the PIand PID configurations of the controller such that the minimum overshoot and ripple are obtained, which increasesthe controller applicability for utilization of PV systems in supplying sensitive loads. A PV system with a capacityof 1 kW has been simulated and implemented in hardware to examine the proposed controller. Furthermore, thispaper discusses the loading limitations in PV systems resulting from switching the power electronic interfaces andtransients associated with large loads. These conditions derate the power generation capability of the PV system. Wepropose some methods to enhance the loadability of these systems under both steady state and dynamic operations.A PV system for home application purposes, with a rated power of 280 W was designed and built to investigate theloadability issue. The proposed enhancements were applied to the experimental setup and the obtained resultsverified the effectiveness of the proposed methods. This paper gives an excellent educational presentation of severalaspects related to control theory, renewable energy engineering and power electronics.

Mohamed, A., & Mohammed, O. A. (2012, June), Smart Control of Power Electronic Converters in Photovoltaic Systems Paper presented at 2012 ASEE Annual Conference & Exposition, San Antonio, Texas. 10.18260/1-2--21920

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