Journal
IET RENEWABLE POWER GENERATION
Volume 15, Issue 4, Pages 809-820Publisher
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/rpg2.12070
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Funding
- Science and Engineering Research Board [CRG/2018/003908]
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This study introduces a reconfiguration algorithm for photovoltaic systems under partial shading conditions, which dynamically modifies connections to balance irradiance and enhance output power. Experimental tests confirm the feasibility of the proposed method.
Partial shading is a severe impediment to the effective use of photovoltaic systems. It will lead to performance degradation in the photovoltaic system. This work proposes a maximum-minimum tier equalisation swapping reconfiguration algorithm for total-cross-tied connection under shading conditions. The proposed reconfiguration algorithm uses a switch matrix to alter the interconnection of modules in a photovoltaic array. The switch matrix dynamically modifies the connections based on the equalisation of tier irradiance. This algorithm applies to the symmetrical and asymmetrical photovoltaic array. Further, simulation studies show the efficacy of the proposed algorithm by minimising the multiple peaks and enhancing the output power compared with the traditional total-cross-tied configuration. The performance of experimental tests ascertains the feasibility of the proposed method.
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