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《Proceedings of the CSEE》 2010-12
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Operation Characteristics Analysis of the Single Winding Bearingless PM Slice Motor at Lacking-phase

YUE Sheng-zou, WANG Xiao-lin, DENG Zhi-quan, LIAO Qi-xin (College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu Province, China)  
There always exists a problem towards bearingless slice motor that the faults of windings or power switches would lead to the motor’s abnormal running. Aimed at solving the problem above, a lacking-phase fault control strategy was presented based on the stator-current reconfiguration principle and experimented on a six-phases single-winding bearingless slice motor. The method put forward a more general stator-current lacking-phase control model, which was based on the mathematical model of motor’s levitation force and torque combined with the power-optimal constraints. Moreover, certain lacking-phase states under which motor’s running could be assured steady were concluded through the analysis about remains lacking-phase currents and its corresponding levitation force’s Pulse. The lacking-phase control was implemented under random one-phase, adjacent or opposed two-phases fault states and could not be implemented for apart two-phases or more then two-phases fault states. Finally, a single-winding bearingless slice prototype motor was applied to achieve the fault-tolerance control under the random one-phase and opposed two-phase fault states.
【Fund】: 国家自然科学基金项目(50977043)~~
【CateGory Index】: TM351
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