A New Control Method for Vibration and Noise Suppression in Switched Reluctance Machines

Abstract

Due to their inherent advantages such as low cost, robustness and wide speed range, switched reluctance machines (SRMs) have attracted great attention in electrical vehicles. However, the vibration and noise problems of SRMs limit their application in the automotive industry because of the negative impact on driver and passengers’ comfort. In this paper, a new control method is proposed to improve the vibratory and acoustic behavior of SRMs. Two additional control blocks —direct force control (DFC) and reference current adapter (RCA)—are introduced to the conventional control method (average torque control (ATC)) of SRM. DFC is adopted to control the radial force in the teeth of the stator, since the dynamic of the radial force has a large impact on the vibratory performance. RCA is proposed to handle the trade-off between the DFC and ATC. It produces an auto-tuning current reference to update the reference current automatically depending on the control requirement. The effectiveness of the proposed control strategy is verified by experimental results under both steady and transient condition. The results show that the proposed method improves the acoustic performance of the SRM and maintains the dynamic response of it, which proves the potential of the proposed control strategy.

Advanced Control of Switched Reluctance Motors (SRMs): A Review on Current Regulation, Torque Control and Vibration Suppression

“…To mitigate the radial force and torque ripple simultaneously, [195], [196] rearranged the radial force reference for the two conducting phases during the commutation period to reduce the torque ripple, at the cost of increased RMS current value when compared to the conventional method. Alternatively, [197]- [199] slightly modified the torque ripple minimization reference current by coordinating with the direct force controller, so the vibration is significantly reduced and the toque ripple is kept almost the same when compared with the results of torque ripple minimization controller.…”

Influence of the Rotor Geometry on Efficiency and Torque Ripple of Switched Reluctance Motor Controlled by Optimized Torque Sharing Functions

“…There are two ways to achieve these goals. One is to optimize the structure and magnetic circuit design of the motor [3,[8][9][10][11][12], and the other is to implement sophisticated motor control [4,[13][14][15][16][17][18][19][20]. Authors in [8] changed the stator and rotor geometry by attaching feet to the poles to improve the average torque production with ripple minimization.…”

Modeling and Analysis of Radial Electromagnetic Force and Vibration Characteristics Based on Deflection Dual-Stator Switched Reluctance Generator

“…From the perspective of motor drive control analysis, some researchers have proposed a two-pole commutation active vibration-cancellation control using negative voltage pulse width modulation (PWM).This method can not only effectively reduce the vibration occurring on the stator during commutation but also keep the torque ripple and copper loss of the motor within a reasonable range [12,13].The optimization of the voltage fluctuations on the PWM control method does not trigger natural frequency vibrations and has a better damping effect at low-and medium-speed conditions [14,15]. In recent years, the literature [16,17] has proposed the introduction of direct force control and reference current adapters based on torque control, and this control strategy is effective in reducing vibrations under steady and transient conditions. This method slightly modifies the torque ripple-minimizing reference current, and torque fluctuations remain almost constant, but the accuracy of radial force determination is a major obstacle to the implementation of this technique [18].…”