Electricity: motive power systems – Plural diverse motor controls – Motor-reversing
Patent
1974-05-30
1976-03-30
Dobeck, B.
Electricity: motive power systems
Plural diverse motor controls
Motor-reversing
318314, 318327, 318331, H02P 516
Patent
active
039477371
ABSTRACT:
A gate control for thyristor converters connected in opposition to reversibly drive a D.C. electric motor in which one of the thyristor converters operates as a rectifier and the other remains still when the motor runs forward, and vice versa. The gate control includes an operational amplifier to carry out current control for the converters and to generate an output therefrom which follows the motor armature voltage during the switchover between converters to prepare for reverse rotation of the motor. The other converter, which operates momentarily as an inverter to feed electric energy from the motor back to an A.C. electric voltage supply thereof to reduce the motor speed, is controlled to enable its inverter voltage to coincide substantially with the motor armature voltage so as not to cause excessive rushing current from the motor into the inverter at the instant of the switchover.
REFERENCES:
patent: 3612974 (1971-10-01), Wolf
patent: 3617844 (1971-11-01), Grygera
patent: 3713012 (1973-01-01), Johnson
patent: 3764885 (1973-10-01), Buxbaum
patent: 3795850 (1974-03-01), Grygera
Kimura Takashi
Ogita Toshiyuki
Sumihana Takahiro
Dobeck B.
Tokyo Shibaura Electric Co. Ltd.
LandOfFree
Gate control of thyristor converters for reversibly driving a D. does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gate control of thyristor converters for reversibly driving a D., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gate control of thyristor converters for reversibly driving a D. will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-523540