Optimal hybrid array configuration scheme to reduce mismatch losses of photovoltaic system

摘要

This paper proposes a hybrid array configuration technique to reduce mismatch losses in the photovoltaic (PV) array under partial shading condition. The reduction in PV array output power does not depend linearly on the shaded PV module, instead it is highly dependent on the extent of mismatch. The extend of mismatch depends upon several factors like type of configuration, array size and shading patterns. Here, different array configuration techniques like series-parallel (SP), total-cross-tied (TCT), bridge-linked (BL), honey-Comb (HC) along with a new hybrid array configuration technique have been discussed to contemplate the effects of mismatch conditions. A comparative analysis is being accomplished using different irradiance test conditions for determining the configuration having lowest amenability to power loss under mismatch condition.