Title :
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
fDate :
4/1/2000 12:00:00 AM
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;
Journal_Title :
Industrial Electronics, IEEE Transactions on
