Proceedings of the KSR Conference (한국철도학회:학술대회논문집)
- 2007.11a
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- Pages.1445-1450
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- 2007
Measurement and Analysis of Transient Overvoltages on Inverter-fed Induction Motors
인버터 구동 유도전동기에서 과도전압의 측정과 분석
Abstract
Induction motors are the main driving force of electric vehicles and operated by pulse width modulation (PWM) inverters in speed control. Contrary to full-voltage operation of induction motors, inverter-fed induction motors (IFM) generates transient overvoltages up to 10 kV/us and transient overvoltages accelerate the deterioration of winding insulation. We investigated transient overvoltages produced by the operation of IFM and analyzed its peak value and dv/dt depending on power cable length and operation frequency. The experimental results showed that transient overvoltages measured at the motor terminal increased with the cable length between inverter and motor.
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