摘要
介绍了基于ADVFC32的电子电流互感器的工作原理,主要分析了电流互感器相位补偿中截止频率和相移关系问题。针对实际硬件电路输出电压相位滞后问题提出校正方案并进行实验,结果表明,采用有源低通二阶滤波器及全通滤波器在一定范围内可以校正相位。
This article introduces the principle of electronic current transformer based on ADVFC32,the relationship between cut-off frequencies and phase-shifting is analyzed in the phase compensation of electronic current transformer.Research on the phase lag of output voltage of hardware circuit is presented;the calibration is proposed and tested.The test results showthat phase can be calibrated by using of second-order active filter and all pass filter in a certain range.
出处
《电测与仪表》
北大核心
2010年第7期60-64,共5页
Electrical Measurement & Instrumentation
基金
哈尔滨市科技创新人才专项基金资助项目(2006RFQXG049)
关键词
相移
有源滤波
截止频率
电子式电流互感器
phase-shift
active filter
cut-off frequency
electronic current transformer
