Direct instantaneous torque control of a switched reluctance motor based on fuzzy fractional order PID

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (23) : 104-110.

DANG Xuanju，PENG Huimin， JIANG Hui， WU Xiru

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Abstract

Aiming at the direct instantaneous torque control system of a switched reluctance motor,a fuzzy fractional order PID control strategy was proposed here.Fractional integral and fractional differential were introduced into the two-dimensional fuzzy controller to design a fuzzy fractional order PID rotating speed outer loop controller.The fractional integral was used to improve the steady-state precision of the system and weaken the large overshoot caused by the integral saturation.The fractional differential was employed to overcome the shortcoming of the first order differential being easy to be disturbed by high-frequency interferences and improve the dynamic performance of the system.The PID torque inner loop controller was designed based on the RBF neural network to adapt to the nonlinearity of the switched reluctance motor,and realize the torque’s dual-closed loop tracking control.The simulation results showed that the proposed fuzzy fractional order PID rotating speed outer loop controller can effectively reduce the torque ripple of the switched reluctance motor to make the system quickly reach steady state with good dynamic performance and strong adaptability.

Key words

fractional integral and fractional differential / switched reluctance motor / direct instantaneous torque control / fuzzy fractional order PID / RBF neural network

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DANG Xuanju，PENG Huimin， JIANG Hui， WU Xiru. Direct instantaneous torque control of a switched reluctance motor based on fuzzy fractional order PID[J]. Journal of Vibration and Shock, 2018, 37(23): 104-110

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