This paper presents a new optimized winding and core design for improved performance of an induction machine. The performance improvement is attained by space harmonic reduction in the winding magnetomotive force (MMF). In the proposed design, the new conductor distribution of the winding and its slot positions are obtained by solving an optimization problem which maximizes the fundamental component of the MMF and reduces certain harmonic components in it, number of which depends on the number of slot per pole per phase. The novel formulation of the optimization results in the modified slot sizes while keeping the width of stator and rotor teeth same as that for the conventional machine. In the proposed design, for certain machine rating, when compared with conventional machine the active length of conductor and the amount of iron is unchanged. However, the winding overhang reduces which leads to copper saving (\(\approx \) 6.46%), less winding resistance (\(\approx \) 6.5%) and leakage reactance (\(\approx \) 7.69%) and finally resulting in decreased total copper losses (\(\approx \) 21.6%). Also, improvement in the steady-state torque and efficiency and decrease in the maximum flux density in core is obtained with the proposed machine design.

本文提出了一种新的优化绕组和磁芯设计，以提高感应电机的性能。通过降低绕组磁动势 (MMF) 的空间谐波来实现性能改进。在所提出的设计中，绕组的新导体分布及其槽位置是通过解决一个优化问题获得的，该优化问题使 MMF 的基波分量最大化并减少其中的某些谐波分量，谐波分量的数量取决于每极的槽数每相。优化的新公式导致了改进的槽尺寸，同时保持定子和转子齿的宽度与传统机器的宽度相同。在建议的设计中，对于一定的机器额定值，与传统机器相比，导体的有效长度和铁的数量没有变化。\(\approx \) 6.46%)，减少绕组电阻 ( \(\approx \) 6.5%) 和漏抗 ( \(\approx \) 7.69%) 最终导致总铜损减少 ( \(\approx \) ) 21.6%)。此外，通过所提出的机器设计，获得了稳态转矩和效率的提高以及磁芯中最大磁通密度的降低。