Abstract
AbstractBecause of its high efficiency, high slot fill factor, short end-winding and good heat dissipation, rectangular-wire motor has become the development trend of new energy vehicle drive motor. With the increasing requirements of high-speed drive motor, the eddy current loss of rectangle-wire motor windings is particularly remarkable, which affects the efficiency. Firstly, AC loss caused by skin effect and proximity effect are analyzed and simulated at different speeds. Then, a rectangular-wire motor and a circular-wire motor with same rotor and same core length are designed and simulated. Finally, the testing platform is built and the two kinds of prototype motor are experimented and compared. And the BEMF and continuous output capability of the prototypes were compared and analyzed. It turns out to be that continuous output capability of the rectangular-wire motor was about 20% higher than that of the circular-wire winding motor. KeywordsRectangular-wire windingPermanent magnet motorAC copper lossHigh efficiency
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