Electricity: motive power systems – Plural diverse motor controls – Motor-reversing
Patent
1981-03-23
1983-08-02
Truhe, J. V.
Electricity: motive power systems
Plural diverse motor controls
Motor-reversing
318258, 318380, H02P 540
Patent
active
043968775
ABSTRACT:
A reversible electric drive with bidirectional back-current brakes fed by a rectifier supplied from a pair of A.C. power lines for a D.C. motor having two directions of rotation and two poles, comprises a control rectifier bridge for each direction of rotation, each bridge having two branches each containing a diode which is common to both bridges, a shunt resistor for each direction of rotation which is identical with a braking resistor for each other direction of rotation connected in series with the motor for each bridge, each bridge having two other branches each containing a rectifier thyristor with cathodes of each rectifier thyristor connected to a common point. The common point of each bridge is connected to one of the poles of the motor with a control thyristor connected to each common point in series with each respective shunt resistor of each bridge and connected to each other by a connecting point. The common diode is connected to the connecting point, and a braking thyristor is provided between a connecting point of each braking thyristor is provided between a connecting point of each shunt resistor and its respective control thyristor and the common points respectively.
REFERENCES:
patent: 3463991 (1969-08-01), Yuminaka et al.
patent: 4329630 (1982-05-01), Park
Egri Janos
Kucsera Gyoorgy
Evans A.
Truhe J. V.
Vallalat Kohaszati Gyarepito
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