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电网技术  2006 

带谐波补偿功能的动态电压补偿器

, PP. 36-40

Keywords: 谐波补偿,动态电压恢复器,谐振控制器,电能质量

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Abstract:

根据传统静止坐标和d-q坐标关系推导出相应的静止坐标下的谐振控制器来检测出指定次数的谐波,应用这种静止坐标下的谐振控制器对指定次数的谐波电压进行闭环控制,简单地加到动态电压补偿器(dynamicvoltagerestorer,DVR)控制系统中以达到补偿谐波电压的目的,而对DVR的基本电压暂降补偿性能的影响很小,提高了DVR的效率。分析了该谐振控制器的幅频和相频特性,指出在将其加入DVR控制系统中进行谐波补偿时不会引起有功功率的流动,对直流侧能量的影响也较小。仿真验证了该控制器不会引起DVR直流侧的功率流向,并可消除绝大部分指定次数的谐波。

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