Power generation maximization of distributed photovoltaic systems using dynamic topology reconfiguration

Abstract The ‘mismatch losses’ problem is commonly encountered in distributed photovoltaic (PV) power generation systems. It can directly reduce generation. Hence, PV array reconfiguration techniques have become highly popular to minimize the mismatch losses. In this paper, a dynamical method for Total-Cross-Ties (TCT) and Series–Parallel (SP) interconnected arrays proposed. aims improve maximum output of different conditions through set inverters switching matrix that controlled by dynamic scalable optimization algorithm. structures both TCT-based SP-based are designed enable flexible alteration electrical connections between strings inverters. Also, proposed solution scalable, because size deployed only determined numbers inverters, not related number modules string. performance assessed with TCT SP interconnections conditions, including partial shading random module failure. average time 0.02 3 s, respectively. effectiveness confirmed, improved 8.56% 6.43% compared fixed topology scheme.