A Study on the Insulation Characteristics for Stator Windings of IGBT PWM Inverter-Fed Induction Motors

The winding insulation of low-voltage induction motors in adjustable-speed drive system with voltage-fed inverters is substantially stressed due to the uneven voltage distribution and excessive voltage stress (dv/dt), which result in the premature insulation breakdown. In this paper, the detailed insulation test results of 26 low-voltage induction motors are presented. Six different types of insulation techniques are applied to 26 motors. The insulation characteristics are analyzed with partial discharge, discharge inception voltage, AC current, and dissipation factor tests. Also, insulation breakdown tests by high voltage pulses are performed, and the corresponding breakdown voltages obtained.

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Cite this article

[IEEE Style]

D. Hwang, D. Kang, Y. Kim, T. Lim, S. Bae, D. Kim, C. Ro, "A Study on the Insulation Characteristics for Stator Windings of IGBT PWM Inverter-Fed Induction Motors," Journal of Power Electronics, vol. 3, no. 3, pp. 159-166, 2003. DOI: 10.6113/JPE.2003.3.3.159.

[ACM Style]

Don-Ha Hwang, Dong-Sik Kang, Yong-Joo Kim, Tae-Hoon Lim, Sung-Woo Bae, Dong-Hee Kim, and Chae-Gyun Ro. 2003. A Study on the Insulation Characteristics for Stator Windings of IGBT PWM Inverter-Fed Induction Motors. Journal of Power Electronics, 3, 3, (2003), 159-166. DOI: 10.6113/JPE.2003.3.3.159.