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Maximum Power Point Tracking in Photovoltaic System Through Extremum Seeking Control With FO Switching Technique

[+] Author Affiliations
Chun Yin, Yuhua Cheng, Shou-ming Zhong, Lulu Tian

University of Electronic Science and Technology of China, Chengdu, China

YangQuan Chen

University of California - Merced, Merced, CA

Paper No. DETC2015-47296, pp. V009T07A043; 7 pages
  • ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 9: 2015 ASME/IEEE International Conference on Mechatronic and Embedded Systems and Applications
  • Boston, Massachusetts, USA, August 2–5, 2015
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5719-9
  • Copyright © 2015 by ASME


In this paper, a fractional-order sliding mode based extremum seeking controller (FO SM-ESC) is proposed as a maximum power point tracking (MPPT) algorithm for a PV system. The FO SM-ESC combines extremum seeking controller with FO sliding mode dynamics, in which FO proportional-integral (PI) sliding surface is adopted. The FO SM-ESC can not only guarantee the output power stay around the maximum power point but also have a faster tracking performance and higher accuracy than integer-order (IO) SM-ESC with proportional (P) or PI sliding surface. Simulation and experimental results demonstrate the effectiveness of the proposed method.

Copyright © 2015 by ASME



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