Synchronous motor torque control device

摘要: A method is described for controlling synchronous motor torque, utilizing a three-phase switch connected in circuit to the input of polyphase motor, and control circuit. The senses AC voltages produces signals that open close phase with voltage, producing positive torque during normal operation. If power lost, acts prevent reverse flow high current from entering source bus. When power, after short time, returns, such manner as permit only real applied thus accelerates speed quickly restores synchronism source.