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http://dx.doi.org/10.6113/JPE.2017.17.6.1600

Implementation of a Switched PV Technique for Rooftop 2 kW Solar PV to Enhance Power during Unavoidable Partial Shading Conditions

Kumar, B. Praveen (Department of Electrical and Electronics Engineering, Kamaraj College of Engineering and Technology)
Winston, D. Prince (Department of Electrical and Electronics Engineering, Kamaraj College of Engineering and Technology)
Christabel, S. Cynthia (Department of Electronics and Communication Engineering, Kamaraj College of Engineering and Technology)
Venkatanarayanan, S. (Department of Electrical and Electronics Engineering, K.L.N. College of Engineering)

Publication Information

Journal of Power Electronics / v.17, no.6, 2017 , pp. 1600-1610 More about this Journal

Abstract

We propose maximum power extraction from a rooftop solar photovoltaic (PV) array during partial shading conditions. Partial shading is unavoidable during power extraction from rooftop PV systems due to nearby tall buildings (construction of additional floors) and trees (growth of trees). Many reconfiguration techniques can be used to extract maximum power in partial shading conditions, but in several cases, the real maximum power output is not achieved. In this study, a new switched PV technique is proposed to enhance the power output. The proposed technique is simple to use and more cost effective than other reconfiguration techniques. Therefore, it is suitable for rooftop applications. The power output of the proposed technique is compared with that of existing techniques with similar shading patterns. Eight panels with ratings of 250 watts (2 kW) each are used for testing. MATLAB simulation and hardware verification are done for the proposed and existing techniques. The proposed technique is implemented on a $4{\times}2$ PV array, although it can be extended to a number of arrays.

Keywords

Maximum Power Point (MPP); Partial Shading; Reconfiguration; Solar PV;

Citations & Related Records

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