Title :
Analysis of insulation characteristics of PWM inverter-fed induction motors
Author :
Hwang, Don-Ha ; Park, Doh-Young ; Kim, Yong-Joo ; Kim, Dong-Hee ; Koo, Ja-Yoon ; Hur, Ick-Goo
Author_Institution :
Mechatronics Res. Group, Korea Electrotechnol. Res. Inst., Changwon, South Korea
Abstract :
Inverter driven induction motors with high speed switching and advanced PWM techniques are widely used for variable speed applications. Recently, the insulation failures of stator windings have attracted much concern due to high dv/dt of IGBT PWM inverter output. In this paper, the detailed insulation test results of 25 low-voltage induction motors are presented. Five different types of insulation techniques are applied to 25 motors. The insulation characteristics are analyzed with partial discharge, discharge inception voltage, AC current, and dissipation factor tests. Also, breakdown tests by high voltage pulses are performed
Keywords :
DC-AC power convertors; PWM invertors; bipolar transistor switches; impulse testing; induction motors; insulated gate bipolar transistors; insulation testing; machine insulation; machine testing; partial discharge measurement; power bipolar transistors; power semiconductor switches; stators; AC current tests; IGBT PWM inverter-fed induction motors; advanced PWM techniques; discharge inception voltage tests; dissipation factor tests; dv/dt; high speed switching; high voltage pulse breakdown tests; insulation characteristics; insulation characteristics analysis; insulation test results; partial discharge tests; stator windings; variable speed applications; Breakdown voltage; Cable insulation; Induction motors; Insulated gate bipolar transistors; Insulation testing; Partial discharges; Pulse width modulation inverters; Stator windings; Switching frequency; Wires;
Conference_Titel :
Industrial Electronics, 2001. Proceedings. ISIE 2001. IEEE International Symposium on
Conference_Location :
Pusan
Print_ISBN :
0-7803-7090-2
DOI :
10.1109/ISIE.2001.931837
