摘要
根据通用瞬时功率理论,提出了一种电源电压矢量同步参考坐标变换的有源滤波器无功和谐波电流检测方法。该方法通过对电源电压矢量的同步旋转跟踪,实现对谐波和无功电流的检测,省去了锁相环及三角函数计算,计算方法简单。仿真和实验结果证实了采用本检测方法得到的补偿电流具有很好的补偿性能,而且既可适用于三相对称正弦电源系统,也可适用于不对称非正弦电源系统。
In this paper, according with the universal instantaneous power theory, a detection method for harmonics and reactive currents of active power filters is proposed based on synchronous reference frame transformation of source voltage vector. Synchronously rotating with the source voltage vector, the harmonics and reactive currents can be detected easily and rapidly. The method is very simple without the phase-locked-loop and sinusoidal function calculation. The simulation and experiment results verify the optimal current detection performance and the proposed detection method is suitable entirely for the 3-phase sinusoidal and non-sinusoidal power systems.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2005年第20期62-67,共6页
Proceedings of the CSEE
关键词
电力电子
有源滤波器
电流检测
谐波
不对称系统
Power systems
Active power filters
Current detection
Harmonics
Unbalanced system
