CONTROLLED GATE ELECTRIC MOTOR Russian patent published in 1997 - IPC

FIELD: electric engineering, in particular, in particular, electric drives for tape-feed mechanisms of audio recorders. SUBSTANCE: frequency converter of electric motor operates in full period. Outputs of frequency converter are connected to second terminals of sections of armature winding of electromechanical converter which has permanent magnet inductance coil. Multiple-channel input of frequency converter is connected to multiple-channel output of control unit, which provides possibility of alternate switching of gates of frequency converter. Electric motor operates as gate electric motor because positive feedback circuit with respect to position is provided in it. Electric motor is controlled us feedback electromotive force which is set by rotation speed regulator according to equation E = U-IR. Three current detectors which are connected to armature winding circuits are introduced to accomplish the goal of invention. Outputs of current detectors are joined and connected to third input of rotation speed regulator. EFFECT: full- period conversion, decreased ripple of instantaneous rotation speed, decreased number of active materials and decreased cost, decreased detonation. 1 dwg