A novel design methodology maximizing the weighted-efficiency of flyback inverter for AC photovoltaic modules

A new design methodology that optimizes the weighted efficiency of a single-phase, single-stage flyback inverter for AC-PV module applications is proposed. This novel approach combines the essential advantages of the flyback topology with high efficiency in the direction of a reliable, cost-effective and high performance photovoltaic system. The proposed methodology focuses exclusively on choosing the inverter design parameters, taking into consideration the PV module characteristics. In order to meet this goal an analytical losses calculation should be performed. Since the problem is complicated special effort is given to manipulate the equations and variables in such a way to minimize the number of parameters taking into consideration the operation constraints. The proposed methodology is also verified experimentally.