Synchronous motor control method and device

Details Synchronous motor control method and device Synchronous motor control method and device

2007-02-20

2007-02-20

Ip, Paul (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Field winding circuits

C318S701000, C318S721000, C318S727000, C318S802000, C318S807000

Reexamination Certificate

active

10416271

ABSTRACT:
Synchronous motor controlling apparatus and method controls power applied to minimize or eliminate speed variations of a synchronous motor due to variations in load imposed the motor. The rotational position of a rotor of the synchronous motor based on the input terminal voltages and currents to the synchronous motor, and the power applied to the motor is adjusted accordingly. Higher harmonics of the input voltages and currents may also be used to detect the position of the rotor. In addition, the apparatus and method also accounts for the varying speed command inputs.

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