便携式工频绝缘试验系统试验电压波形分析与滤波研究

Testing Voltage Waveform Analysis and Filtering Research on Portable Power Frequency Insulation Testing System

针对蓄电池供电的便携式工频绝缘试验系统直流/交流变换过程中产生的谐波,应用傅立叶变换分析试验电压波形,针对试验电压中的谐波分量,设计一种有效滤波的有源无源混合型滤波器,试验结果表明滤波效果满足试验标准要求.

To eliminate the harmonics produced by DC/AC conversion of portable power frequency insulation testing system,which take the power from a storage battery,this paper employs the Fourier Transform to analyze testing voltage waveforms. For the harmonics of testing voltage,a kind of effective and active-passive hybrid filter is proposed,the experimental results show that the filter satisfies the demands for testing standard.