Electronic switching arrangement for energizing electric motors

Details Electronic switching arrangement for energizing electric motors Electronic switching arrangement for energizing electric motors

1975-03-18

1977-05-31

Rubinson, Gene Z.

Electricity: motive power systems

Reciprocating or oscillating motor

Energizing winding circuit control

318171, 318227, H02K 2900

Patent

active

040272133

ABSTRACT:
An electronic commutation circuit for feeding from a direct-current source an electric motor consisting of a stator with a polyphase winding and a magnetized rotor coupled mechanically with a position and angular speed sensor, comprises for each phase of the stator winding a transistor switching circuit, the operation of the switching circuits being sequentially controlled from signals received from the sensor in such a way that the various phases of the stator winding are fed by a system of polyphase bidirectional currents of substantially sinusoidal form rising and falling in steps, the frequency and phase angle of these currents being determined by the speed of the rotor and by its position relative to the stator. Each of the switching circuits is preceded by an electronic trigger with three stable positions and which delivers a positive, zero or negative voltage to provide control of the binary state of the associated commutation circuit.

REFERENCES:
patent: 3406325 (1968-10-01), Rosa
patent: 3423662 (1969-01-01), Schlabach et al.
patent: 3662247 (1972-05-01), Schieman
patent: 3775652 (1973-11-01), Bowler et al.
patent: 3819992 (1974-06-01), Opal et al.

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