NDLI: Optimal Balancing Control for Tracking Theoretical Global MPP of Series PV Modules Subject to Partial Shading

Content Provider	IEEE Xplore Digital Library
Author	Woei-Luen Chen Chung-Ting Tsai
Copyright Year	1982
Abstract	Photovoltaic (PV) modules subject to partial shading (PS) or inhomogeneous irradiation drastically decrease the PV string power output. An algorithm composed of maximum voltage point tracking (MVPT) and maximum power point (MPP) tracking (MPPT) is presented to restore part of the power loss caused by PS. The MVPT can simultaneously drive the operating point of series PV modules toward their respective MPPs and guarantee power peak uniqueness. The MVPT is performed by means of a controllable current transformer (CCT) disposed at the terminal of each PV module permitting a compatible current in the series path of a PV string. The CCT output current can be regulated using a dependent current source according to the MPPT algorithm. An appropriate CCT current determined by the MPPT algorithm can avert undue CCT activation and consequently reduces the switching and copper losses of the converter circuit. Experimental results validate that the proposed strategy can balance the PV modules' output current subject to PS and facilitate convergence to the theoretical global MPP.
Sponsorship	IEEE Industrial Electronics Society
Starting Page	4837
Ending Page	4848
Page Count	12
File Size	3039591
File Format	PDF
ISSN	02780046
Volume Number	62
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radiation effects Power generation Algorithm design and analysis Arrays Convergence Photoconductivity Microwave integrated circuits Maximum power point tracking (MPPT) partial shading (PS) photovoltaic (PV) string Maximum power point (MPP) tracking (MPPT)
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications

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