Analysis and design of a dual series resonant converter for utility interface

The use of a dual series resonant converter with phase-shifted operation for photovoltaic utility interface is presented. The analysis, sequence of operation and detailed design for a 5 kW system are presented. The inverter operates at a fixed frequency above the resonant frequency in order to reduce the switching losses in the devices. A general purpose Simulation program AT0SEC5 has been used to predict the performance of the converter and experimental results are given confirming the validity of the simulation results.