摘要
随着光伏发电技术水平不断提高,光伏并网系统在未来具有较大发展潜力。分析了光伏并网发电系统的工作原理,在光伏电池工程用数学模型下,选用导纳增量法的MPPT算法,建立了光伏阵列仿真模型。并网逆变器则采用电压外环、电流内环的SPWM双环控制策略。仿真结果表明,搭建的仿真模型能够满足实际并网规范要求,可以用于光伏发电并网方面的仿真研究。
With the development of photovoltaic technology,photovoltaic system in the future has great potential.This paper analyzes the principle of photovoltaic power system,established the photovoltaic array with the incremental method MPPT strategy in the photovoltaic cell engineering mathematical models.Grid-Connected model of inverter has used the inner current and outer voltage loop SPWM control strategy.The simulation results show that the model built to meet the requirements of the actual and network specifications,which can be used for photovoltaic power generation and network simulation area.
出处
《电力科学与工程》
2011年第1期5-10,共6页
Electric Power Science and Engineering
