A Design Method for Double Cage Rotor Considering Speed-Torque Characteristic Optimization in Induction Machines

2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM) Pub Date : 2020-06-01 DOI:10.1109/SPEEDAM48782.2020.9161931

Bogdan Miroschnitschenko, F. Poltschak, W. Amrhein

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Abstract

In this paper a method for the designing of a double cage rotor (DCR) for three-phase induction motors (IMs) is developed. For the complete dimensioning of the both cages’ slots and the slit between these formulas were leaded out. The influence of these dimensions on the starting current, starting torque and breakdown torque ratios and on the rated slip was analyzed in detail. The developed method was tested by designing of a three-phase induction motor (IM) with DCR for the rated power 5.5 kW by constant supply frequency 400 Hz, the obtained results were verified with the evaluation of motor characteristics from a 2D Finite Element Method (FEM) motor’s model. The designed DCR core sheet was compared with DCR core sheets used in industry by designing of an IM with the same stator and air gap. The obtained with the designed DCR results show much higher starting torque and breakdown torque ratios than the results obtained by using of industrial sheets.

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考虑感应电机转速-转矩特性优化的双保持架转子设计方法

本文提出了一种三相异步电动机双保持架转子的设计方法。为了得到两个保持架的槽和间隙的完整尺寸，推导出了这些公式。详细分析了这些尺寸对起动电流、起动转矩和击穿转矩比以及额定转差的影响。通过对额定功率5.5 kW、恒频400 Hz的三相异步电动机(IM)的设计验证了所提出的方法，并通过二维有限元法(FEM)电机模型对所得到的结果进行了验证。通过设计具有相同定子和气隙的IM，将所设计的DCR铁芯片与工业上使用的DCR铁芯片进行了比较。用所设计的DCR计算结果得到的起动转矩和击穿转矩比明显高于用工业薄板计算得到的结果。

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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2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)

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