Research On Double Salient Electro-Magnetic Motor Speed Control System Based On Half-Bridge Convertor

Double Salient Electro-Magnetic Motor is a new type of AC motor.It's main circuit is used of full-bredge convertor and half-bridge-bridge convertor.Becasue of control convenient,small torque ripple and high efficiency, Speed-controlling system is used of half-bridge convertor on the special occasion.But a current detector is used on each-phase winding of double salient electro-magnetic motor by half-bridge circuit. Because of phase-current double polarity, this make the system structure complex, so the development of half-bridge circuit is limited. This paper briefly introduced a new method of double salient electro-magnetic motor phase-current detector and control system by half-bridge convertor. At the same time, speed-controlling system is designed. It offers a new type means to equipment of double salient electro-magnetic motor speed-controlling system.On the base of system theory give us simulating analysis of system. .At last conclude result. Simulation and test prove that the system is simple and convenient in control. It not only gets rid of the complexity of phase-current detector and control as usual by half-bridge convertor, but also has an advantage over full-bridge convertor.