Electricity: motive power systems – Synchronous motor systems
Patent
1982-12-23
1985-04-16
Goldberg, E. A.
Electricity: motive power systems
Synchronous motor systems
318722, 318723, H02P 742
Patent
active
045118353
ABSTRACT:
A relatively simple inverter-motor system, comprising a minimum number of circuit components, is provided by employing a voltage-controlled thyristor inverter which in turn drives a synchronous motor having a leading power factor. With the motor current leading the motor voltage, the thyristor switching devices will be motor-commutated, thereby precluding the need for any auxiliary commutating elements or circuits to effect forced commutation. Since, with a leading power factor, the current through a conducting thyristor falls to zero before the thyristor has to be switched off, ample turn-off time is provided. Furthermore, as compared to a conventional forced commutated voltage source inverter, the customary reactive diodes, usually shunting the switching devices in an inverter to permit the flow of reactive motor current, are not necessary. Moreover, by powering the inverter with a voltage source, rather than with a current source, the commutation process is greatly facilitated, the need for damper windings on the motor is eliminated, and the physical size of the d-c link inductor normally required by a current source inverter is greatly reduced.
REFERENCES:
patent: 3321697 (1967-05-01), Etter
patent: 3340453 (1967-09-01), Bradley et al.
patent: 3423662 (1969-01-01), Schlabach et al.
patent: 3600658 (1971-08-01), Kuniyoshi
patent: 3731172 (1973-05-01), Kaufman
patent: 3872364 (1975-03-01), Hubner
patent: 3906314 (1975-09-01), Wiart
patent: 4276505 (1981-06-01), Bose
patent: 4321518 (1982-03-01), Akamatsu
patent: 4327315 (1982-04-01), Kawada et al.
patent: 4328454 (1982-05-01), Okuyama et al.
patent: 4375612 (1983-03-01), Wirth
patent: 4394610 (1983-07-01), Dolland
patent: 4437050 (1984-03-01), Overzet
Borg-Warner Corporation
Evans A.
Goldberg E. A.
Tracy James E.
LandOfFree
Voltage-controlled, inverter-motor system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Voltage-controlled, inverter-motor system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voltage-controlled, inverter-motor system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1458743