Input current modulation to reduce torque pulsations in controll

Details Input current modulation to reduce torque pulsations in controll Input current modulation to reduce torque pulsations in controll

1976-10-06

1978-01-03

Hohauser, Herman J.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

363 40, H02P 540

Patent

active

040669386

ABSTRACT:
A controlled current motor drive system and method for its operation utilizes an open loop technique and simple control circuit additions to modulate the inverter input current at six times motor frequency and reduce sixth harmonic torque pulsations. Conventionally generated current source inverter control signals at six times motor frequency are also used to derive a sixth harmonic ac signal which is fed to the controlled rectifier gating circuit as an additional input.

REFERENCES:
patent: 3919609 (1975-11-01), Klautschek et al.
patent: 3967173 (1976-06-01), Stich

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