Nine-state control strategy for three-phase electrically excited doubly salient pole motor
A doubly salient motor and control strategy technology, applied in the direction of electronically commutated motor control, torque ripple control, control system, etc., can solve the problems of different torque peaks of each phase, torque peaks, etc., to reduce torque The effect of eliminating pulsation, eliminating torque pulsation, and increasing the rate of change of current
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[0023] The present invention will be described in detail below in conjunction with the accompanying drawings with an electric excitation doubly salient motor starting system.
[0024] The system block diagram of electric excitation doubly salient motor is as follows: figure 2 As shown, the main power circuit is a three-phase full-bridge circuit, and the neutral point is not drawn out. Compared with the three-phase half-bridge circuit, the volume is small, and the hardware structure is simple and reliable. In order to obtain the accurate rotor position of the motor, a position sensor is required, and the obtained corresponding rotor position signal P a ,P b ,P c The driving signal of the main power circuit is generated through the processing of the digital control circuit to control the operation of the motor.
[0025] Such as image 3 As shown, the six-state state control strategy divides six conduction intervals by the natural commutation points of opposite potentials in...
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