Chong, BVP and Zhang, L (2013) Controller design for integrated PV-converter modules under partial shading conditions. Solar Energy, 92. 123 - 138. ISSN 0038-092X
Abstract
Module-integrated PV and converter units have been a promising technique for achieving maximum power generation for mismatching and/or partially shaded PV modules. Control of a PV system with multiple such units is difficult as the operation of each unit is required to be regulated to generate the maximum power according to its respective light level. This paper presents a novel model-based, two-loop control scheme for a particular MIPC system, where bidirectional Ćuk dc–dc converters are used as the bypass converters and a terminal Ćuk boost functioning as a whole system power conditioner. Experimental tests of example systems consisting of two and three serially connected units are presented showing that the proposed system can increase power generation as much as 30%, compared to the conventional bypass diode structure. In general with n modules in series the maximum power gain is expected to be (100/n)%. The new control scheme is developed using analytical expressions for the transfer functions of the power converters. The control results showing rapid and stable responses are superior to that obtained by bypass diode structure which is conventionally controlled using Perturbation-and-Observation method.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2013, Elsevier. This is an author produced version of a paper published in Journal of International Solar Energy Society. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Photovoltaic system; Partial shading; Integrated converter; Ćuk converter; Maximum power point tracking |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Institute of Communication & Power Networks (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 10 Nov 2015 10:46 |
Last Modified: | 18 Jan 2018 05:03 |
Published Version: | http://dx.doi.org/10.1016/j.solener.2013.01.025 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.solener.2013.01.025 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:86214 |