Removal of moisture from induction motors

Details Removal of moisture from induction motors Removal of moisture from induction motors

1997-08-04

1999-04-20

Ip, Paul

Electricity: motive power systems

Induction motor systems

Primary circuit control

318436, 318471, 310208, H02H 708, H02P 700, H02K 324

Patent

active

058960210

ABSTRACT:
A method for removing moisture from an induction motor having at least two phase windings with each phase winding coupled by a first respective parallel combination of a first switch and a first diode to a positive voltage line and a second respective parallel combination of a second switch and a second diode to a negative voltage line includes supplying voltage to the positive and negative voltage lines and switching ON and OFF selected ones of the first and second switches to provide a current to preheat the induction motor. The provided current can be a substantially DC current or a substantially sinusoidal current.

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patent: 5712540 (1998-01-01), Toda et al.

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