Design and optimization of PCCM interleaved Boost converter for photovoltaic power generation system

In order to improve output performance, a two-phase six-state Pseudo-Continuous Conduction Mode (PCCM) interleaved boost converter for photovoltaic power generation systems is proposed in this paper. It not only retains the low-ripple output characteristics of the interleaved boost converter, but also has the characteristics of simple design and fast response. Dynamic-Reference-Current (DRC) strategy is used to reduce losses and improve efficiency. The dynamic reference current strategy is adopted to control the freewheeling loop switch tube to reduce the loss and improve the efficiency. The simulation results show that the fast-dynamic response and low output ripple are realized, and the feasibility of the DRC control strategy is also verified.