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2022-11-21
Speed Sensorless Control of Bearingless Synchronous Reluctance Slice Motor Considering the Effect of Suspension Force Windings
By
Progress In Electromagnetics Research C, Vol. 127, 17-29, 2022
Abstract
In this paper, the effect caused by the suspension force windings on the torque windings in a bearingless synchronous reluctance slice motor (BsynRSM) is analyzed, and a new slide model observer is proposed to reduce the speed estimation vibration caused by this effect. Firstly, the effect of suspension force windings is analyzed in a Maxwell model. The suspension force windings will generate an asynchronous torque and current, which are similar to superimposing an asynchronous motor on the original motor. And a special Matlab/Simulink model is built. Secondly, the effect of current and torque generated by suspension force windings on speed sensorless is analyzed. The sliding mode observer (SMO) is studied considering the effect of suspension force windings. Simulation result shows that the current generated by suspension force windings of the BsynRSM will cause the estimate speed vibrating with the rotor vibration, and the frequency of speed estimation vibration is much higher than the additional current and torque generated by the suspension force windings. Thirdly, an improved SMO is proposed. By using the improved SMO, the amplitude and frequency of the speed estimation are obviously reduced. Finally, the improved SMO is verified on the experimental platform, which proves the feasibility of the method.
Citation
Ruichen Li, and Huangqiu Zhu, "Speed Sensorless Control of Bearingless Synchronous Reluctance Slice Motor Considering the Effect of Suspension Force Windings," Progress In Electromagnetics Research C, Vol. 127, 17-29, 2022.
doi:10.2528/PIERC22101101
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