Study on interleaved parallel and secondary coupled switched inductance Boost converter

Abstract In recent years, with the worsening of environmental problems, photovoltaic power generation technology has become more and more widely used. In this paper, the output voltage level of a photovoltaic power generation system cannot meet the requirements of grid connection, and a scheme is proposed. An interleaved parallel and secondary coupled switching inductance Boost converter is proposed by combining secondary coupled switching inductance, coupling inductance, interleave-parallel technique, and capacitor-diode (CD) unit. The operating mode and steady-state performance are analyzed in detail, and the voltage gain and the voltage and current stress of each component are calculated. The model is built on the PSIM simulation platform, and the correctness of the theoretical analysis is verified by the simulation results. The results show that the voltage gain is improved effectively, and the voltage stress of each component is reduced, which accords with the theoretical analysis.