Synchronous motor control apparatus and drive system using the same

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United States of America Patent

PATENT NO 9923502
SERIAL NO

15313290

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Importance

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Abstract

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A method for detecting a potential (Vn) includes stator wirings in a Y connection, and automatically adjusting a relationship with a position of a rotor as a system for realizing rotor position-sensorless stable drive of an AC motor where the three-phase stator wirings are in Y connection in the stop and low-speed ranges. A synchronous motor control apparatus includes a three-phase synchronous motor in which three-phase stator wirings are in a Y connection, and an inverter for driving the motor, wherein the synchronous motor is DC-conducted thereby to move a rotor to a predetermined position, and is applied with a pulse-shaped voltage from the inverter in the moved state so that a neutral point potential as potential (Vn) of the Y connection point is acquired when the pulse voltage is applied, thereby driving the synchronous motor based on the acquired value.

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Patent Owner(s)

Patent OwnerAddress
HITACHI AUTOMOTIVE SYSTEMS LTDHITACHINAKA-SHI

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hano, Masaki Hitachinaka, JP 17 39
Iwaji, Yoshitaka Tokyo, JP 67 748
Okamoto, Naoki Hitachinaka, JP 172 1637
Umetsu, Takeshi Hitachinaka, JP 5 4

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