| Title |
Evaluation of Insulation Performance on Stator Windings of Inverter-Fed Induction Motor According to Impregnation Techniques |
| Authors |
황돈하(Hwang, Don-Ha) ; 강동식(Kang, Dong-Sik) ; 김용주(Kim, Yong-Joo) ; 이인우(Lee, In-Woo) ; 구자윤(Koo, Ja-Yoon) ; 김동희(Kim, Dong-Hee) ; 이광식(Lee, Kwang-Sik) |
| Keywords |
유도전동기 ; 고정자 권선 ; IGBT PWM 인버터 ; 부분방전 ; 절연파괴 ; |
| Abstract |
The low-voltage induction motors have been widely driven by IGBT PWM inverters, ever since it was used to apply variable speed drives. Recently, the insulation failures of the stator windings become critical problems due to the high ratio of dv/dt in IGBT PWM inverters. In this paper, the detailed insulation tests on the IGBT PWM inverter fed induction motor are carried out. Five different types of insulation techniques are used to ti induction motors. The change of the insulation characteristics such as partial discharge, AC current, capacitance, and dissipation factor are compared. respectively In addition, insulation breakdown tests using the high voltage pulse are performed, and corresponding breakdown voltages are analyzed. |