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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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