摘要
作为高压电力有源滤波器(APF)的预研,采用数字信号处理芯片TMS320F2812为核心搭建了三相H桥级联APF实验样机。以基于瞬时无功功率理论的谐波电流检测算法为基础,对相电流进行分解并进行数学分析,提出一种新的三相谐波及无功电流检测方法,可省去常规谐波及无功电流检测p-q法和ip-iq法中的2次坐标变换,节省控制器计算时间。仿真及实验结果表明实验样机可有效实现谐波补偿。
As preliminary study of high voltage active power filter （APF）, an experimental prototype of three-phase H-bridges cascaded APF is built based on digital signal processing chip TMS320F2812. On the base of instantaneous reactive-power theory, the phase current is decomposed and analyzed with mathematical method, and a new detection method of harmonic and reactive currents for three-phase circuit is presented. The proposed method can save calculation time by omitting the process of coordinate transformation, which is used in conventional p-q algorithm and ip-iq algorithm The results of simulation and experiment show that the experimental prototype can realize harmonic current compensation effectively.
出处
《电子测量与仪器学报》
CSCD
2012年第8期687-692,共6页
Journal of Electronic Measurement and Instrumentation
关键词
有源电力滤波器
H桥级联
瞬时无功功率
谐波及无功电流
低通滤波
载波相移
Active power filter
h-bridges cascaded
instantaneous reactive current
harmonic and reactive currents
low-pass filter
cartier phase-shifted
