Control system for a permanent magnet synchronous motor

Details Control system for a permanent magnet synchronous motor Control system for a permanent magnet synchronous motor

1995-09-20

1997-06-03

Ip, Paul

Electricity: motive power systems

Synchronous motor systems

Field winding circuits

318723, 318729, 318254, H02P 540

Patent

active

056358105

ABSTRACT:
A control system for a permanent magnet synchronous motor includes a position estimator means having for cross correlating the back EMF of the unenergized winding with a reference waveform to determine the estimated position of the rotor for determining rotor angle position error; an error compensator, responsive to the rotor angle position error, for determining the angular speed of the field; an angle generator, responsive to the angular speed of the field, for generating the field angle position; and a waveform generator, responsive to the rotor angle position, for generating a periodic signal corresponding to each winding and designating a segment of that signal for driving that winding to adjust the field speed to the rotor speed.

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