H - Electricity – 02 – P
Patent
H - Electricity
02
P
H02P 25/08 (2006.01)
Patent
CA 2232888
A control circuit for controlling a switch reluctance motor including at least one phase, the control comprising a power stage including means for variably supplying a DC voltage, and a winding stage including for each phase a phase winding having one end and another end. The winding stage further includes a high voltage bus connected to the power stage, and a low voltage bus connected to the power stage. The winding stage further includes, for each phase, a first current path comprising an upper commutating switch connected to the high voltage bus, the respective phase winding one end connected to the upper switch, and a lower commutating switch connected to the respective phase winding other end and to the low voltage bus. The winding stage also includes, for each phase, a second current path comprising a first unidirectional current flow device connected to the low voltage bus and to between the upper switch and the respective phase winding one end, and a second unidirectional current flow device connected to between the respective phase winding other end and the lower switch and connected to the high voltage bus.
A. O. Smith Corporation
Riches Mckenzie & Herbert Llp
LandOfFree
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