Magnetically integrated high step-up resonant DC-DC converter for distributed photovoltaic systems

In this paper magnetically integrated resonant single-switch quasi-Z-source DC-DC converter is evaluated as a candidate topology for the low-cost photovoltaic microconverter. The derivation of the topology and its basic operation principle are explained. Generalized design guidelines and experimental results of 250 W prototype are discussed for different realization approaches of the hybrid coupled inductor, which is the key component of the proposed topology.