Sensorless Control of Dual Three-Phase PMSM Based on Fuzzy Algorithm
Aiming at the problem of low sensorless control accuracy and fixed gain value of existing high-speed dual three-phase permanent magnet synchronous motor,a fuzzy discrete superspiral sliding mode ob-server based on improving accuracy and changing gain value is proposed.Firstly,the mathematical model and current equation of dual-three-phase permanent magnet synchronous motor are analyzed.Secondly,the superspiral sliding mode observer is constructed by combining the current equation and the superspiral algo-rithm,and the inverse differential separation and scattering method is used to discretize,and the fuzzy con-trol is added to obtain the conversion gain value,which solves the two advantages of the superspiral sliding mode observer being limited by the fixed gain value and cannot have both fast convergence speed and small observation error.Finally,a simulation model is built in the MATLAB environment to verify the proposed algorithm,and the simulation results show that the new observator has high accuracy and can change the gain and convergence quickly.
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NSTL
万方数据
维普
