Direct Torque and Direct Suspension Force Control ofDoubleStator Bearingless Switched Reluctance Motor
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(School of Electrical and Information Engineering, Jiangsu University,Zhenjiang 212013, China)
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Abstract:
A doublestator bearingless switched reluctance motor was studied. An innerouter double stator structure were adopted for the motor. The suspension force winding and the torque winding were separately arranged on the inner stator and the outer stator. Based on the description of the operating principle of the topology, the direct torque and direct suspension force control (DT/DSFC) strategy was proposed for the problem that the motor had both torque ripple and suspension force pulsation. The torque ripple, suspension force pulsation and rotor radial displacement fluctuation of the system under the traditional square wave control strategy and the proposed control strategy were compared. The test results showed that DT/DSFC could not only improve the dynamic response speed of the system, but also effectively suppress the torque and suspension force pulsation, and weaken the rotor radial buffeting, verifying the effectiveness and superiority of the proposed control strategy.
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SUN Yukun, YU Fengyuan, HUANG Yonghong, ZHANG Kuan, LIN Wenwei. Direct Torque and Direct Suspension Force Control ofDoubleStator Bearingless Switched Reluctance Motor[J]. Electric Machines & Control Application,2018,45(11):7-14, 20.