Title page for etd-0711116-221702


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URN etd-0711116-221702
Author Yi-cheng Chung
Author's Email Address No Public.
Statistics This thesis had been viewed 5568 times. Download 1773 times.
Department Electrical Engineering
Year 2015
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Global Maximum Power Point Tracking by Using Short-Circuit Current for Serial Photovoltaic Panels
Date of Defense 2016-07-20
Page Count 66
Keyword
  • Short-circuit currents
  • Partially shaded condition
  • Serially connected photovoltaic (PV) panels
  • Maximum power point tracking (MPPT)
  • Global maximum power point
  • Abstract This thesis proposes a novel maximum power point tracking (MPPT) method for serially connected photovoltaic (PV) panels under partially shaded conditions. Experimental results indicate that the voltage-current (V-I) characteristic curves of PV panels can be obtained by stretching the currents in proportional to the irradiance levels. The overall V-I characteristic curve for a number of PV panels in series can be obtained by superimposing all V-I curves figured from horizontally scaling the short-circuit currents of each PV panel. Accordingly, all powers at the local maximum power points (LMPP) can be calculated from the characteristic equations and thus the global maximum power point (GMPP) is found. Instead of scanning the overall V-I curve with time consuming power calculations, the proposed approach measures the short-circuit currents and estimates only the powers at LMPPs. Moreover, the new GMPP can be found rapidly when an irradiance change happens to the serial PV panels. A laboratory system with serially connected PV panels and sampling circuits were set up to verify the feasibility and effectiveness of the MPPT strategy.
    Advisory Committee
  • Hong-Tzer Yang - chair
  • Tsai-Fu Lin - co-chair
  • Chih-Chiang Hua - co-chair
  • Hung-Liang Cheng - co-chair
  • Chin-Sien Moo - advisor
  • Files
  • etd-0711116-221702.pdf
  • indicate access worldwide
    Date of Submission 2016-08-13

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