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US 9,431,950 B2Granted
Motor apparatus
AssigneeDenso Corporation
InventorTomokazu Ishikawa
Life of this patent
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Abstract
A motor apparatus includes a full-pitch winding type reluctance motor which has three phase coils formed of full-pitch windings, and a controller which controls applying current to each coil of the three phases. When changing from a state where current is applied to a first phase coil and a second phase coil to a state where current is applied to a third phase coil and the first phase coil, the controller displaces the timing when decreasing the current of the second phase coil is started and the timing when increasing the current of the third phase coil is started from each other.
Claims7
A motor apparatus, comprising:
- a full-pitch winding type reluctance motor which has three phase coils formed of full-pitch windings, wherein inductive voltage will be generated in a winding of each phase of the three phase coils due to magnetic fluxes, generated by applying current, interlinking with the winding of all phase of the three phase coils;
- and
- a controller which controls applying current to each coil of the three phases, wherein
- when changing from a state where current is applied to a first phase coil and a second phase coil for generating magnetic fluxes to first torque generating magnetic poles to a state where current is applied to a third phase coil and the first phase coil for generating magnetic fluxes to second torque generating magnetic poles, the controller turns off current-carrying of the second phase coil, while current-carrying of the first phase coil is in an on state, to start decreasing the current of the second phase coil, and then the controller turns on current-carrying of the third phase coil to start increasing the current of the third phase coil.
1 more element
Dependencies are inferred from the claim text.