基于PWM控制的电抗器测量仪的研究  

Analysis of an Application of Variable Current Source in Reactor Measurement System

作　　者：王金炜[1] 朱东柏[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,哈尔滨150040

出　　处：《黑龙江水专学报》2009年第4期66-68,共3页Journal of Heilongjiang Hydraulic Engineering College

摘　　要：为了改变传统测量电抗器电抗值,介绍了一种基于PWM控制的方法,能够在额定电流下进行阻抗测量,且电源为三相对称电流源。采用由DSP控制、CMOS管构成PWM逆变电路的测量方法,能够在三相对称电流源下测量,而不是三相对称电压源,减小了测得的电抗值与实值的误差。选用此测量方法与传统方法相比,具有设备体积小,测量精度高的优点。In order to change the traditional measurement of reactance value of reactor,a method based on the PWM control can be carried out under the rated current in the impedance measurement,and is the three-phase symmetrical current source.Use the measurement method of DSP control、PWM inverter circuit controled by CMOS,can be measured in three-phase symmetrical current sourse,rather than three phase symmetrical voltage sourse,which reduces the error of electrical resistance measured and the real value.Compare to the traditional meathod,this measurement meathod have the advantages of small size,high accuracy measurement.

关 键 词：电抗器 PWM控制 三相对称电流源 三相对称电压源 

分 类 号：TM835[电气工程—高电压与绝缘技术]