Title :
Experimental comparison of insulation systems for IGBT PWM inverter-fed low-voltage induction motors
Author :
Hwang, Don-Ha ; Kim, Yong-Joo ; Bae, Sung-Woo ; Kim, Dong-Hee ; Lee, In-Woo
Author_Institution :
Mechatronics Res. Group, Korea Electrotechnol. Res. Inst., Changwon, South Korea
Abstract :
The winding insulation of low-voltage induction motors in an adjustable-speed drive system with IGBT pulse width modulated (PWM) 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 48 low-voltage induction motors are presented. Different types of insulation techniques are applied to 48 motors. The insulation characteristics are analyzed with partial discharge, discharge inception voltage, and dissipation factor tests. Also, breakdown tests by high voltage pulses are performed.
Keywords :
PWM invertors; electric breakdown; induction motor drives; insulated gate bipolar transistors; insulation testing; machine insulation; machine testing; machine windings; partial discharge measurement; variable speed drives; IGBT PWM inverter-fed low-voltage induction motors; IGBT PWM inverters; IGBT pulse width modulated inverters; adjustable-speed drive system; breakdown tests; discharge inception voltage; dissipation factor tests; excessive voltage stress; high voltage pulses; partial discharge; premature insulation breakdown; uneven voltage distribution; winding insulation; Breakdown voltage; Induction motors; Insulated gate bipolar transistors; Insulation testing; Partial discharges; Performance evaluation; Pulse inverters; Pulse width modulation inverters; Stress; Variable speed drives;
Conference_Titel :
Power Electronics Specialists Conference, 2002. pesc 02. 2002 IEEE 33rd Annual
Print_ISBN :
0-7803-7262-X
DOI :
10.1109/PSEC.2002.1022581
