摘要
介绍并网逆变器的设计方法,采用TMS320F2812作为控制器,通过改进型SPWM电流跟踪控制实现输出电流与电网电压同频同相,从而使电流跟踪误差显著减少。同时阐述了最大功率跟踪及孤岛检测的原理,给出了具体的解决方案。最后给出了基于TMS320F2812的软件设计,并进行了样机实验,结果表明并网电流波形良好,所设计的逆变装置具有良好的稳定性和可靠的控制策略。
This paper introduces a design of grid-connected inverter.The TMS320F2812 is used as controller,it is realize that the output current have the same frequency and phase with utility grid voltage by improving SPWM current tracking.The error of current track decrease evidently by this method.Simultaneously,the principle of the maximum power point tracking and island detection is elaborated,and techniques of islanding protecting and MPPT strategy are discussed.Finally,the program flow chart of the system based on TMS320F2812 is proposed.Sample experiments are done and the results show that the wave of grid-connected current is better,the inversion device has good stability and reliable control strategy.
出处
《电力电子技术》
CSCD
北大核心
2010年第11期19-21,共3页
Power Electronics
关键词
逆变器
光伏并网
最大功率跟踪
孤岛检测
inverter
photovoltaic grid-connected
maximum power point tracking
island detection
