Optimization of direct torque control strategy of permanent magnet synchronous motor
In order to solve the problem of electromagnetic torque ripple in the traditional direct torque control system,a direct torque control strategy for permanent magnet synchronous motor based on improved model prediction was proposed.A method of combining model prediction principle with direct torque control system was used to reduce torque ripple during motor operation.A 12-sector direct torque control method was designed to optimize the model prediction,a three-stage hysteresis loop controller was introduced to reduce the torque ripple,and an ideal alternative voltage vector set was given.It was simulated in MATLAB/Simulink and compared with model predictive control after optimizing the voltage vector selection table and traditional model predicting the direct torque control.The results showed that the proposed method could effectively reduce the system torque ripple and make the system more stable while maintaining good dynamic response ability of the permanent magnet synchronous motor during operation.
permanent magnet synchronous motordirect torque controlmodel predictionoptimize control
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