CONTROL DEVICE OF HEAVY TRUCK ELECTRIC TRANSMISSION Russian patent published in 1994 - IPC

FIELD: transport. SUBSTANCE: with load platform body lowered down to stop electric switch 9 breaks supply circuit of additional winding 7 of magnetic amplifier 4. Current generated by synchronous generator 1 is rectified by three-phase rectifier 3 and supplies setting winding 6 which builds up magnetic flux directed along arrow A. Voltage from transformer 2 is supplied through operating winding with diodes 5 to exciter 8 which generates voltage on which vehicle driving speed depends. At maximum rotational speed of synchronous generator 1 speed of vehicle will be maximum. If truck body is raised up, body position pickup 10 opens switch 9. Voltage from three-phase rectifier 3 is supplied to additional winding 7 through adjusting resistor 11 and control button 12; magnetic flux of additional winding is directed along arrow B towards magnetic flux of setting winding 6. Voltage generated by exciter 8 is proportional to resulting magnetic flux of magnetic amplifier 4 which in this case is considerably less than magnetic flux of setting winding 6. As a result, at maximum rotational speed of synchronous generator 1, truck driving speed will be low. EFFECT: enlarged operating capabilities. 1 dwg