摘要
有源电力滤波器的谐波电流检测环节决定系统的补偿性能。针对基于park变换的dq检测方法,对基于该方法的电流检测误差进行深入分析,包括锁相环鉴相的频率和相位误差对检测误差的影响,以及低通滤波器对检测误差的影响。探讨了不同电压环境下的误差形成原因,得出直流侧电压调整参考量在不平衡电压下影响检测精度等结论,并通过仿真验证。
The harmonic current detection of APF（Active Power Filter）decides its compensation performance. The dq detection method based on park transformation is researched,and its current detection error is analyzed deeply,including influences of the frequency and phase errors of PLL （Phase-Locked Loop） and the low-pass filter on current detection error. The causes are discussed under different voltage environments. Conclusions,such as the DC voltage adjustment influences the detection precision when voltage is unbalanced,are drawn and verified with simulation.
出处
《电力自动化设备》
EI
CSCD
北大核心
2005年第10期29-32,共4页
Electric Power Automation Equipment
