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高压电器  2015 

基于双DSP结构的配电网静止同步补偿器设计

DOI: 10.13296/j.1001-1609.hva.2015.09.005, PP. 28-33

Keywords: 双DSP,静止同步补偿器,冗余设计,无功补偿,零线电流补偿

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Abstract:

笔者设计了一种基于双DSP结构的三相四线制配电网静止同步补偿器(D-STATCOM),一个DSP负责采样、核心算法、SVPWM输出,另一个DSP负责外围监控与通讯,减小了处理器各自的负担,提高了实时响应速度。同时双DSP均具有保护功能,实现了保护功能的冗余设计,增加了设备运行的可靠性。通过dq变换,得到电网所需的无功电流,采用前馈解耦控制,实现了对无功电流的无稳态误差补偿;通过采样、三角波载波、PWM输出方式,实现了对零线电流的跟踪补偿。最后通过MATLAB仿真和50kvar样机试验,得到了仿真和实验的数据及波形,验证了文中提出的基于双DSP结构的配电网静止同步补偿器设计的可行性,具有一定的实用价值。

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