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This paper investigates the interaction of the zero sequence component into both permanent magnet (PM) shape and phase current to improve the output torque in dual three-phase surface-mounted PM (SPM) machines. The optimal zero sequence components are analytically derived and validated by finite element (FE) analyses. It is found that the optimal zero sequence components into both PM shape and current...
Due to high torque density, low torque ripple, high efficiency, excellent fault-tolerance capability and convenient manufacturing, fraction-slot concentrated windings (FSCWs) are desirable to be used in high performance permanent magnet (PM) synchronous machines.
Due to inherent high efficiency and high power density, high-speed permanent magnet brushless dc motors have been extensively studied and utilized in many fields. Sensorless operation can significantly improve system reliability and reduce the performance variations caused by discrete sensors. From the system point of view it is often necessary to consider sensorless operation at the motor design...
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