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1·The novel double-stator permanent magnet (PM) machine is compacted with fractional slot concentrated winding and double-stator PM machine.

双转子永磁电机是一种具有高转矩密度、高运行效率的新型永磁电机。

2·Then the harmonic torque and performance of concentrated winding single-phase induction motor is calculated. The modal is applied to a single-phase induction motor.

分析了转子斜槽对谐波参数的影响，最终计算出集中绕组单相电机的谐波转矩和电机性能。

3·Based on the principle that an equivalent full-pitch, concentrated winding gives the same fundamental MMF as the actual one, the effective number of turns of the equivalent winding is obtained.

根据等效整距集中绕组与实际绕组产生相等基波磁动势的原则，给出了实际定子绕组与转子绕组的总有效匝数表达式。

4·On conditioning that the motor has high pole number and low speed, the contradiction of slots and pole combination is improved by concentrated fractional slot winding.

采用近极槽数的特殊集中分数槽绕组解决了电机多极数，低转速情况下电机极、槽配合的矛盾。