Motor driver and heat pump
AssigneeMitsubishi Electric Corporation
InventorsYuichi SHIMIZU, Kazunori HATAKEYAMA
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Abstract
A motor driver for driving a motor including three-phase windings includes: an inverter that applies a desired voltage to the motor; and an inverter controller that controls an operation of the inverter. The inverter includes: a current detector that detects a direct current in a first connecting line among three-phase connecting lines connecting the respective three-phase windings and the inverter; and a current detector that detects an alternating current in a second connecting line among the three-phase connecting lines, and a maximum direct current is caused to flow to the first connecting line in a first control mode for positioning a rotor of the motor.
Claims9
A motor driver adapted to drive a motor, the motor comprising three-phase windings, the motor driver comprising:
- an inverter adapted to apply a desired voltage to the motor;
- and
- an inverter controller adapted to control an operation of the inverter, wherein
- the inverter comprises:
- a direct-current detector adapted to detect a direct current in a first connecting line among three-phase connecting lines, the three-phase connecting lines connecting the respective three-phase windings and the inverter;
- and
- an alternating-current detector adapted to detect an alternating current in a second connecting line among the three-phase connecting lines, wherein
- the inverter controller uses a direct current detected by the direct-current detector and an alternating current detected by the alternating-current detector in controlling an operation of the inverter, and
- in a first control mode of positioning a rotor of the motor, the inverter controller is adapted to apply a maximum direct current in the first connecting line.
Dependencies are inferred from the claim text.