基于电导增量法的光伏MPPT控制仿真分析

Simulation Analysis of MPPT Control for Photovoltaic Power Generation System Based on Conductance Increment Method

为了实现光伏阵列最大功率输出,讨论并建立了实现光伏阵列发电系统中的相关模型,列出光伏阵列模型,介绍电导增量法的原理和流程。基于以上理论,在PSCAD/EMTDC电磁暂态仿真软件中搭建仿真模型。结果证明,所搭建的MPPT控制元件经过Boost升压模块之后获得了稳定的电压,并且能够准确地跟踪系统最大输出功率,为光伏发电的逆变和并网提供了稳定的基础。

In order to realize the maximum power output of photovoltaic array,this paper discusses and establishes the relevant models of photovoltaic array power generation system in detail,lists the photovoltaic array model,and introduces the principle and process of conductivity increment method.Based on the above theory,the simulation model of photovoltaic and controller is built in PSCAD/EMTDC.The simulation results show that the MPPT control element built in this paper obtains stable voltage after Boost module,and can accurately track the maximum output power of the system,which provides a stable foundation for photovoltaic power generation inverter and grid connection.