ELECTRIC DRIVE OF VEHICLE AC POWER PLANTS WITH MAGNETIC AMPLIFIERS

摘要

FIELD: transport engineering. SUBSTANCE: invention relates to controls of electric drives of vehicle power plants with induction motors. Electric drive has three-phase electric motor, one magnetic amplifier for each phase, each magnetic amplifier containing two ferromagnetic chokes with load windings and two diodes. Elements of magnetic amplifier are built around bridge circuit. Each magnetic amplifier is furnished additionally with internal feedback control unit including program unit, regulating unit, adjustable voltage source and variable resistor. Program unit is connected with control input of regulating unit whose outputs are connected with control inputs of adjustable voltage source and variable resistor. Said electric drive is simple in design and can by used in different mechanisms. EFFECT: enlarged range of mechanisms. 2 cl, 1 dwg