Design and analysis of 4-phase (in-hub) mini-switched reluctance motor for spindle motor in hard disk drive

Proceedings of 1995 International Conference on Power Electronics and Drive Systems. PEDS 95 Pub Date : 1995-02-21 DOI:10.1109/PEDS.1995.404993

T. Low, H. Lin, S.X. Chen, K. Chang

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引用次数: 4

Abstract

In present hard disk drive systems, the brushless DC motor is the spindle motor of choice. However, the higher cost of rare-earth permanent magnets and the complexity of its controller are some of its disadvantages. Its performance also deteriorates in small format disk drive systems. This paper proposes a four-phase (in-hub) miniature switched reluctance motor with an outer rotor structure for the spindle motor in a 3.5" hard disk drive. The design methodology of the mini-SR motor is described. The magnetic characteristics, flux linkage, inductance, coenergy and static torque, have been calculated using 2D finite element analysis. The field solutions and the analysis of an electric circuit have been processed to give the description of the dynamic-state performance of the prototype. With a suitable control strategy, the prototype of the four-phase (in-hub) mini-SR motor can meet the basic specifications of the spindle motor in 3.5" hard disk drives. The development of mini-SR motor provides an alternative spindle motor in hard disk drive systems.<>

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硬盘驱动主轴电机用4相(轮毂内)微型开关磁阻电机的设计与分析

在目前的硬盘驱动系统中，无刷直流电机是首选的主轴电机。然而，稀土永磁体的高成本和其控制器的复杂性是它的一些缺点。在小格式磁盘驱动器系统中，其性能也会下降。本文提出了一种带外转子结构的四相(轮毂内)微型开关磁阻电机，用于3.5”硬盘驱动器的主轴电机。介绍了微型sr电机的设计方法。利用二维有限元分析计算了磁链、电感、共能和静转矩等磁特性。通过现场求解和电路分析，对样机的动态性能进行了描述。通过适当的控制策略，四相(轮毂内)微型sr电机原型可以满足3.5”硬盘驱动器中主轴电机的基本规格。微型sr电机的发展为硬盘驱动系统提供了另一种主轴电机。

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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Proceedings of 1995 International Conference on Power Electronics and Drive Systems. PEDS 95

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