Position-sensorless motor control device

Details Position-sensorless motor control device Position-sensorless motor control device

2007-07-17

2007-07-17

Donovan, Lincoln (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Synchronization systems

C318S721000, C318S700000, C318S799000, C318S805000

Reexamination Certificate

active

11503247

ABSTRACT:
A position-sensorless motor control device has a superposer that superposes, on the drive current with which the motor is driven, a superposed current having a different frequency than the drive current, a superposed component extractor that extracts, from the motor current fed to the motor, the γ-axis and δ-axis components of the superposed current, and a controller that controls the motor so that the direct-current component of the arithmetic product of the extracted γ-axis and δ-axis components of the superposed current converges to zero.

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