Design of a Single-Phase Grid-Connected Photovoltaic Systems Based on Fuzzy-PID Controller

摘要

The output power of photovoltaic (PV) module varies with module temperature, solar isolation and loads changes etc. In order to control the output power of single-phase grid-connected PV system according to the output power PV arrays. In this paper a Fuzzy-PID controller is designed for single-phase grid connected PV system, which includes a DC/DC converter and a single-phase DC/AC inverter that connected to utility grid. Fuzzy-PID control technique is used to realize the system control. The matlab simulation experimental results show that, the proposed method has the good performance.