Measurement of pulsating torque in a current source inverter mot

Details Measurement of pulsating torque in a current source inverter mot Measurement of pulsating torque in a current source inverter mot

1977-07-21

1978-09-05

Rubinson, Gene Z.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

318230, H02P 540

Patent

active

041123395

ABSTRACT:
A method and circuit for calculating the instantaneous pulsating component of torque for use as a cogging feedback signal to stabilize ac motors at low frequencies. An air gap flux signal is generated by integrating the instantaneous voltage across a stator phase winding during the interval the current in that winding is zero. Pulsating torque is the product of the high pass filtered flux signal and the inverter input or dc link current.

REFERENCES:
patent: 3805135 (1974-04-01), Blaschke
patent: 3824437 (1974-07-01), Blaschke
patent: 3919609 (1975-11-01), Klautschek et al.
patent: 4011489 (1977-03-01), Franz et al.
patent: 4041361 (1977-08-01), Cornell
patent: 4044285 (1977-08-01), Plunkett et al.

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