Abstract
Permanent magnet machines often employ two types of winding configurations with conductors located at the left and right sides in a slot, or at the lower and upper layers of a slot. This paper investigates the influence of winding configurations on the inductances in 2-pole high-speed permanent magnet (HSPM) machines, accounting for different coil positions, slot shapes, coil pitches, and slot/pole number combinations. It is found that winding configurations affect the slot leakage inductance depending on the slot shape, in addition to the end-winding inductance which reduces as the increase of coil-pitch. For 2-pole HSPM machines with different slot numbers, the influence of winding configurations on the end-winding inductance decreases with the increase of slot number. Finite element method is used for analyses and the predicted results are validated by experiments on two prototype machines.
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