Electrical stress and failure mechanism of the winding insulationin PWM-inverter-fed low-voltage induction motors
Kaufhold, M.; Aninger, H.; Berth, M.; Speck, J.; Eberhardt, M.
Industrial Electronics, IEEE Transactions on
Volume 47, Issue 2, Apr 2000 Page(s):396 - 402
Digital Object Identifier   10.1109/41.836355
Summary: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

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