Electricity: motive power systems – Synchronous motor systems
Patent
1997-04-10
1998-12-15
Masih, Karen
Electricity: motive power systems
Synchronous motor systems
318701, 318254, 318439, 318138, H02P 146
Patent
active
058501339
ABSTRACT:
A method of commutation of a switched reluctance machine to allow operation in a generate mode comprises the steps of closing upper and lower switches coupling a stator winding to a power bus during an increase in the inductance of a stator winding to allow a flow of current from the power bus through the winding, opening one of the upper and lower switches when the current reaches a first predetermined value, opening the closed of the upper and lower switches during a decrease in the inductance of a stator winding, and closing one of the upper and lower switches during a period of non-alignment of the rotor and stator pole. The method further includes the step of closing both the upper and lower switches if the monitored current falls below a second predetermined value. In this way, the current through the stator winding is not allowed to decay to zero.
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Makeever Jeffery J.
Masih Karen
Sundstrand Corporation
Wingate Kevin L.
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