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光伏发电系统——mppt最大功率点追踪
2022-07-28 05:23:00 【weixin_41950112】
在对基于前级boost的最大功率点追踪仿真时候,遇到了很多问题,现在终于做出来了,简单分享一下,由于本系统两级光伏发电系统。后级的DC/AC将直流母线的电压控成了恒定电压源。故本系统和网上常见的mppt追踪有所区别。
本系统的控制,采用电压外环和电流内环控制:
控制框图如下:电流环内环

由于通过设置参数,电流环带宽至少是电压外环的20倍,故认为电流能快速跟随给定,电压环外环如下:

仿真结果如下:功率ipv*upv图如下:


电流波形ipv如下图所示:

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