Control system for suppressing torque ripple in synchronous moto

Details Control system for suppressing torque ripple in synchronous moto Control system for suppressing torque ripple in synchronous moto

1978-06-30

1980-12-16

Rubinson, Gene Z.

Electricity: motive power systems

Synchronous motor systems

Armature winding circuits

318722, 318800, H02P 728

Patent

active

042400201

ABSTRACT:
A synchronous motor having multi-phase armature windings and a field winding is drived by a frequency converter. Actual torque is determined from a sinusoidal position signal representative of rotational position of the synchronous motor and the armature current. The actual torque value is compared with a command torque signal, whereby the armature current is controlled in dependence on difference or deviation resulting from the comparison thereby to cancel the torque ripple. Torque ripple can thus be suppressed to a satisfactory degree even at a low rotation speed of the synchronous motor.

REFERENCES:
patent: 3824437 (1974-07-01), Blaschke
patent: 3919609 (1975-11-01), Klautschek et al.
patent: 4023083 (1977-05-01), Plunkett
patent: 4060753 (1977-11-01), Okuyama et al.
patent: 4088935 (1978-05-01), D'atre et al.
patent: 4125796 (1978-11-01), Nagase et al.

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