摘要
p-q-r谐波检测法在新的空间坐标系下,定义了零序电流的瞬时功率,能独立消除中线电流。介绍了p-q-r检测法的原理,应用改进的p-q-r法对电容中点式有源滤波器进行了建模及仿真,证明p-q-r法在电网电压不平衡及畸变时能够完全补偿电流谐波分量。以DSP2812为控制器搭建了实验平台,通过分析仿真和实验波形,证明了p-q-r检测法的正确性和实用性。
The p-q-r harmonic detection method defines the zero-sequence current instantaneous power in the new space coor-dinate system,the neutral current can be eliminated independently.This article describes the detection principle of p-q-r and gives the simulation modeling of mid-point capacitor active power filter with improved p-q-r method to prove that the current harmonics can be fully compensated when the p-q-r method in voltage imbalance and distortion.An experimental platform is built by using the DSP2812 as the controller.Through analysis simulation waveforms and experimental waveforms,it proved the correctness and practicability of p-q-r method.
出处
《电力电子技术》
CSCD
北大核心
2010年第9期34-35,43,共3页
Power Electronics
关键词
滤波器
电容中点式
谐波检测
filter
mid-point capacitor
harmonic detection
