Conducted electromagnetic emissions in induction motor drive systems part II: Frequency domain models

被引：126

作者：

Ran, L ^{[1
]}

Gokani, S ^{[1
]}

Clare, J ^{[1
]}

Bradley, KJ ^{[1
]}

Christopoulos, C ^{[1
]}

机构：

[1] Univ Nottingham, Dept Elect & Elect Engn, Nottingham NG7 2RD, England

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 1998年 / 13卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

conducted emissions; drives; electromagnetic compatibility; power converters;

D O I：

10.1109/63.704154

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Predicting conducted emissions in pulsewidth modulation (PWM) inverter induction motor drive systems requires various frequency-dependent effects to be considered, A frequency domain method has advantages in such cases compared to a time domain approach. Based on the modal analysis presented in Part I, this paper develops frequency domain models to evaluate the spectra of the conducted emissions directly. The common and differential mode excitation sources are modeled in the frequency domain and related to the switching functions of the PWM inverter. Network models are established where the induction motor is represented using its frequency-dependent impedance characteristics, which can be obtained from measurements. The influences of system unbalances and of transmission-line effects due to long cables are investigated. Predicted emission spectra are compared with laboratory measurements and those derived from the time domain simulation. Pt is found that the agreement is good. The proposed method allows emission spectra to be predicted without recourse to specialist circuit simulators.

引用

页码：768 / 776

页数：9

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