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This paper deals with the design of an interior permanent magnet machine having rectangular flat-shaped magnets. The electromagnetic performances are calculated using finite-element analysis (FEA) considering different operating points. The mechanical integrity of the rotor at maximum speed (35,000 rpm) is analyzed, as well as PM demagnetization under short-circuit. It is shown that 3 PM segments...
This paper deals with the performance analysis of a high-speed (HS) permanent magnet (PM) machine for an automotive application. Electromagnetic performances in terms of torque, power and losses have been calculated. In order to reduce PM eddy-current losses, tangential and axial segmentation have been studied. Besides electromagnetic performances, the mechanical integrity of the rotor has been analyzed...
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