Application of Photovoltaic Power Optimizer in Distributed Photovoltaic Power Generation System

Abstract

Compared with centralized photovoltaic power generation systems, the distributed generation system's power generation conditions are more complex and changeable, and are extremely susceptible to environmental impacts. To study the mismatch problem of distributed generation systems, a parallel-connected single-switch photovoltaic optimizer circuit was proposed. The current control method was used to realize the energy balance of the mismatched components inside the module, and the working points of each photovoltaic substring were adjusted to improve the photovoltaic efficiency. The output power of the component when the component is internally mismatched.