Electrical stress and failure mechanism of the winding insulation in PWM-inverter-fed low-voltage induction motors

Author

Kaufhold, Martin ; Aninger, H. ; Berth, Matthias ; Speck, Joachim ; Eberhardt, Martin

Author_Institution

Siemens AG, Berlin, Germany

Volume

47

Issue

2

fYear

2000

fDate

4/1/2000 12:00:00 AM

Firstpage

396

Lastpage

402

Abstract

The winding insulation of low-voltage induction motors in adjustable-speed drive systems with voltage-fed inverters is substantially more stressed than in line-powered motors. Consequently, this operation is subject to limitations depending on the electrical stress and on the failure behavior of the winding insulation. Actual recommendations do not consider sufficiently the physics behind these phenomena and contain large utilizable reserves

Keywords

DC-AC power convertors; PWM invertors; electric breakdown; induction motors; insulation testing; machine insulation; machine testing; machine windings; adjustable-speed drive systems; electrical stress; failure behavior; low-voltage induction motors; voltage-fed inverters; winding insulation breakdown; Breakdown voltage; Coils; Dielectrics and electrical insulation; Failure analysis; Induction motors; Insulated gate bipolar transistors; Pulse width modulation; Pulse width modulation inverters; Stator windings; Stress;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.836355

Filename

836355