Electricity: motive power systems – Synchronous motor systems – Hysteresis or reluctance motor systems
Patent
1997-03-26
1999-03-16
Shoop, Jr., William M.
Electricity: motive power systems
Synchronous motor systems
Hysteresis or reluctance motor systems
318254, 318138, H02P 146
Patent
active
058834850
ABSTRACT:
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.
REFERENCES:
patent: 4074179 (1978-02-01), Kuo et al.
patent: 4743815 (1988-05-01), Gee et al.
patent: 5446359 (1995-08-01), Horst
patent: 5463299 (1995-10-01), Futami et al.
A. O. Smith Corporation
Leykin Rita
Shoop Jr. William M.
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