Power conversion device, motor drive unit, and electric power steering device
AssigneeNidec Corporation
InventorHiromitsu OHASHI
Life of this patent
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Abstract
A power conversion device includes a first converter connected to first ends of windings of each phase of a motor, a second converter connected to second ends of the windings of each phase, and a switching circuit used to define a neutral point in the windings of each phase on the first inverter side. At least one of a plurality of switches included in the first inverter has a first current capacity, and a plurality of switches included in the second inverter have a second current capacity that is greater than the first current capacity.
Claims15
A power conversion device that converts power from a power supply to power to be supplied to a motor with n-phase windings, where n is an integer of 3 or greater, the power conversion device comprising:
- a first inverter connected to first ends of windings of each phase of the motor;
- a second inverter connected to second ends of the windings of each phase of the motor;
- and
- a switching circuit used to define a neutral point in the windings of each phase on a side of the first inverter;
- wherein
- at least one of a plurality of switches included in the first inverter has a first current capacity;
- and
- a plurality of switches included in the second inverter have a second current capacity that is greater than the first current capacity.
Dependencies are inferred from the claim text.