Role of End-Ring Configuration in Shaping IE4 Induction Motor Performance

Tayfun Gundogdu;Sinan Suli
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Abstract

The performance characteristics, particularly the starting performance of direct line-fed induction motors, which are mainly influenced by the design of the rotor, are crucial considerations for end-users. It is quite a challenging issue for motor manufacturers to enhance the starting performance of existing mass-produced motors with minimal modifications and expenses. In this paper, a simple and cost-effective method to improve the starting performance of a commercial squirrel-cage induction motor (SCIM) is proposed. The influence of geometric parameters of the end-ring on the performance characteristics, including starting (locked rotor) torque, pull-up and break down torque, starting current, rotor electric parameters, current density, power losses, and efficiency have been comprehensively investigated. It has been revealed that among the other end-ring design parameters, the ring thickness has a significant effect on the performance characteristics. An optimal end-ring thickness is determined, and its performance characteristics have been compared to those of its initial counterpart. Numeric and parametric analyses have been conducted using a 2D time-stepping finite element method (FEM). The FEM results were validated using experimental measurements obtained from an 11 kW SCIM prototype.
端环配置在影响 IE4 感应电机性能方面的作用
直接线路供电感应电机的性能特点,尤其是启动性能,主要受转子设计的影响,是最终用户需要考虑的关键因素。对于电机制造商来说,如何以最小的改动和成本提高现有批量生产电机的启动性能是一个颇具挑战性的问题。本文提出了一种简单而经济有效的方法来提高商用鼠笼式感应电机(SCIM)的启动性能。本文全面研究了端环几何参数对起动(锁定转子)转矩、上拉和断开转矩、起动电流、转子电气参数、电流密度、功率损耗和效率等性能特性的影响。结果表明,在其他端环设计参数中,端环厚度对性能特征有显著影响。研究确定了最佳端环厚度,并将其性能特征与初始端环的性能特征进行了比较。使用二维时间步进有限元法(FEM)进行了数值和参数分析。有限元分析的结果通过 11 千瓦 SCIM 原型的实验测量结果进行了验证。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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