Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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A Study on the Insulation Characteristics for Stator Windings of IGBT PWM Inverter-Fed Induction Motors

  • Hwang, Don-Ha (Industry Applications Research Lab., Korea Electro-technology Research Institute(KERI)) ;
  • Kang, Dong-Sik (Industry Applications Research Lab., Korea Electro-technology Research Institute(KERI)) ;
  • Kim, Yong-Joo (Industry Applications Research Lab., Korea Electro-technology Research Institute(KERI)) ;
  • Lim, Tae-Hoon (School of Electrical & Electronic Eng., Yeungnam Univ.) ;
  • Bae Sung-Woo (School of Electrical & Electronic Eng., Yeungnam Univ.) ;
  • Kim Dong-Hee (School of Electrical & Electronic Eng., Yeungnam Univ.) ;
  • Ro Chae-Gyun (School of Electrical & Electronic Eng., Yeungnam Univ.)
  • Published : 2003.07.01
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Abstract

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.

Keywords

References

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