摘要
针对有源滤波器实际应用的需要,对传统的ip-iq检测算法进行改进,省略了PLL(锁相环)环节和三相至两相的坐标变换,减少了算法计算量,可将其直接应用于三相三线、三相四线以及单相系统的基波和任意次谐波电流检测。仿真结果表明,这种新型检测方法受三相电压不对称的影响小,能更好地适应电网谐波和基波电流检测的需要,可以获得较高的检测精度和较快的动态响应速度。
In view of practical needs of the active power filter, the traditional ip-iq detection algorithm was improved, getting rid of the phase-locked loop （PLL） circuit and coordinate transformation from three-phase to two-phase and reducing the amount of calculation. Also the detection algorithm can be directly applied to the fundamental and arbitrary harmonic currents detection of threephase three-wire, three-phase four-wire and single-phase system. The results of simulation show that this new detection method, which asymmetrical three-phase voltages have little influence on, well adapts to the needs of network harmonic and fundamental currents detection and can gain higher detection accuracy and faster dynamic response speed.
出处
《电工电气》
2009年第7期46-50,共5页
Electrotechnics Electric
关键词
ip-iq算法
任意次谐波检测
无锁相环
仿真
ip-iq algorithm
arbitrary harmonic detection
no phase-locked loop
simulation
