| 摘要 |
An electrical machine is provided with coils which are interconnected to form one or more windings. The coils are made up of at least two sub-coils, connected in series, the sub-coil closest to the airgap having strands in each turn which have a smaller cross sectional area than the strands in the turns in other sub-coils. This arrangement reduces the high-frequency loss in the windings while substantially minimizing any penalty associated with introducing stranding to the coil.
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