Comparison of Induction Machine Performance with Distributed and Fractional-Slot Concentrated Windings
Comparison of Induction Machine Performance with Distributed and Fractional-Slot Concentrated Windings
复制标题
分布式和分数槽集中绕组的感应电机性能比较
DOI：
10.1109/08ias.2008.30
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Manoi R. Shah
中科院分区：
文献类型：
--
作者：
A. El;Manoi R. Shah
分数槽集中绕组在永磁同步电机中引起了广泛的关注。这是由于这种类型的绕组提供的几个优点，包括：更短的非重叠端匝，更高的效率，更高的功率密度，更高的槽填充系数，更低的制造成本，更好的磁通弱化能力，导致更宽的恒功率速度范围，和容错性。然而，在感应电机中使用这种类型的绕组所涉及的权衡尚未在文献中得到解决。本文以标准分布搭接绕组为参照，考察了分数槽集中绕组感应电机的性能。对四种设计进行了比较，并强调了各种性能权衡。第一台机为整槽分布的2槽/极/相位搭接绕组，作为参考绕组。第二种机器有双层1/2槽/极/相绕组，是无刷直流电机的主力。第三台为双层2/5槽/极/相绕组。最后，第四台机器有单层2/5槽/极/相绕组。比较包括转矩-速度曲线（包括主要空间谐波分量的影响），转子棒损耗和纹波转矩水平。
Fractional-slot concentrated windings have been gaining a lot of interest in permanent magnet synchronous machines. This is due to the several advantages provided by this type of windings which include: shorter non-overlapping end turns, higher efficiency, higher power density, higher slot fill factor, lower manufacturing cost, better flux-weakening capability resulting in wider constant power speed range, and fault-tolerance. However, the tradeoffs involved in using this type of windings in induction machines have not been addressed in literature. This paper examines induction machine performance with fractional-slot concentrated windings using the standard distributed lap windings as reference. Four designs are compared and various performance tradeoffs highlighted. The first machine has integral-slot distributed 2 slots/pole/phase lap winding and it serves as the reference winding. The second machine has a double-layer 1/2 slot/pole/phase winding, a workhorse for brushless DC machines. The third machine has double-layer 2/5 slot/pole/phase winding. Lastly, the fourth machine has single-layer 2/5 slot/pole/phase windings. The comparison includes torque-speed curves (including the effects of major space harmonic components), rotor bar losses, and ripple torque levels.