High speed AC motor controller

摘要: An apparatus comprising, in combination, an AC motor, a solid state switch controlling the switchable between on which electric current flows through and off does not flow switch, characterized by turn time such that, when is switched state, at least portion of during time, first circuit for switching to prevent from flowing diode bridge coupled across second controllably active may inactive bridge, control into predetermined period after turned off, said longer than shorter EMF degradation wherein back motor rectified DC injected provide high torque braking while avoiding short condition.