Abstract
In this paper, two dual three-phase winding configurations are compared based on the Toyota Prius 2010 interior permanent magnet (IPM) machine. It is found that the winding configuration with single-layer full-pitched (SF) windings can improve average torque and reduce torque ripple in constant torque range. The winding configuration with double-layer short-pitched (DS) windings has better torque performance in a constant power range. The electromagnetic performances of the two winding configurations when one winding set is excited and the other one is open-circuited are also compared. The DS winding configuration shows much better performance under this condition. Overall, the dual three-phase winding configuration with DS windings is preferred for dual three-phase IPM machines in electric vehicles. A Toyota Prius 2010 IPM machine equipped with DS windings was manufactured to verify the analyses presented in this paper.
Highlights
In recent decades, electric vehicles (EVs) have attracted more and more attention with the concerns about global greenhouse gas emissions and the unstable supplies of fossil fuels
From the comparative studies given in this paper, the dual three-phase (DTP)-double-layer short-pitched (DS) winding configuration is preferred for the Toyota Prius 2010 interior permanent magnet (IPM) machine
Summary Based on the analyses presented it can be summarized that the double-layer short-pitched windings (DTP-DS) winding configuration has better performance under the three-phase OC condition
Summary
Electric vehicles (EVs) have attracted more and more attention with the concerns about global greenhouse gas emissions and the unstable supplies of fossil fuels. The electromagnetic performance of DTP-DS has not been presented comprehensively in existing papers, and the proposed DTP-DS winding configuration has never been compared with the conventional STP winding configuration in the Toyota Prius 2010 IPM machine. For DTP-SF and DTP-DS machines, even if one three-phase winding set is open-circuited (OC), they still can be operated with the remaining three-phase winding set To compare their electromagnetic performances under this condition, the comparison carried out under the three-phase OC condition is considered. From the comparative studies given in this paper, the DTP-DS winding configuration is preferred for the Toyota Prius 2010 IPM machine.
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