Bearing currents and their relationship to PWM drives

被引：233
作者：
Busse, D
Erdman, J
Kerkman, RJ
Schlegel, D
Skibinski, G
机构：
[1] Rockwell Automation-Allen Bradley Company, Mequon
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 1997年 / 12卷 / 02期
关键词：
bearing capacitance; bearing current; bearing current density; bearing threshold voltage; electric discharge machining; electrostatic shielded induction motor; rotor shaft to ground voltage; stator to rotor capacitance;
D O I：
10.1109/63.558735
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：
This paper examines ac motor shaft voltages and the resulting bearing currents when operated under pulse width modulation (PWM) voltage source inverters. The paper reviews the mechanical and electrical characteristics of the bearings and motor in relation to shaft voltages and bearing currents. A brief review of previous work is addressed, including the system model and experimental results. The theory of electric discharge machining (EDM) is presented, including component calculations of the system elements. The effect of system elements on shaft voltages and hearing currents are evaluated experimentally and the results compared to theory. A design calculation is proposed that provides the relative potential for EDM. Finally, the paper will present quantitative results on one solution to the shaft voltage and bearing current problem.
引用
收藏
页码：243 / 252
页数：10
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