Feedback control for reduction of cogging torque in controlled c

Details Feedback control for reduction of cogging torque in controlled c Feedback control for reduction of cogging torque in controlled c

1977-07-21

1979-01-30

Rubinson, Gene Z.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318722, H02P 540

Patent

active

041374894

ABSTRACT:
A decogging feedback control for current source inverter motor drives uses a change of instantaneous torque feedback signal with no dc component that is a function of only the instantaneous pulsating component of measured torque. The change of torque signal modulates the voltage applied to the dc link and therefore the dc link current to materially reduce the detrimental cogging torque pulsations and stabilize the motor, and can be switched out at a low frequency above which it is not needed so that the motor can respond properly to rapid variations in torque.

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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