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为了准确检测的位置信息,在分析永磁同步电动机数学模型的基础上,将滑模变结构控制应用于永磁同步电动机的控制系统.采用滑模状态观测器算法对电动机转子位置进行估算,从而实现了对无位置传感器型永磁同步电动机的转子磁场定向矢量控制.实验结果表明,滑模状态观测器算法对转子位置跟踪准确,系统具有较好的鲁棒性. 相似文献
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在无轴承永磁同步电动机设计中,应用ANSYS软件进行辅助设计、分析.设计结果直观、准确,能够节约永磁材料和缩短设计周期. 相似文献
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通过分析永磁同步电动机(PMSM)的数学模型,提出神经网络模糊控制器的设计方法,并应用于永磁同步电动机双闭环矢量控制系统中的转速控制器,用来精确实现永磁同步电动机的速度控制。仿真实验表明,该方法得到的各项性能指标均优于PI控制和递归模糊神经网络控制,具有很强的适应性和鲁棒性,取得了比较理想的控制效果,为实现永磁同步电动机的智能化调速控制提供了切实可行的技术方案。 相似文献
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针对永磁同步电动机这一非线性多变量的复杂系统,提出了不依赖对象精确数学模型与参数的永磁同步电动机神经网络逆系统控制方法.给出了永磁同步电动机的一般数学模型和解析逆模型,证明了该系统可逆,用神经网络逆系统对其进行控制是可行的.永磁同步电动机的逆系统由静态神经网络加积分器构成,与原系统串联,实现了永磁同步电动机的转速和磁链动态解耦.在此基础上,对两个解耦的伪线性子系统设计了线性闭环调节器,使整个系统获得优良的动静态性能.仿真实验结果表明,神经网络逆系统方法可以实现对永磁同步电动机的高性能控制,对参数变化和负载扰动具有较强的鲁棒性. 相似文献
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无轴承永磁同步电机的转子磁场定向控制研究 总被引:17,自引:7,他引:17
无轴承永磁同步电机由于功率密度大、转矩脉动低等优良特性受到了高度重视。文中针对一类表面贴装式无轴承永磁同步电机,详细推导出径向悬浮力表达式,建立了准确的数学模型。针对电磁转矩和径向悬浮力之间耦合的特点,采用了基于转子磁场定向的控制策略来实现这类无轴承永磁同步电机的非线性解耦控制。实验证明了该控制算法的有效性。该控制算法对插入式转子结构和内装式转子结构的无轴承永磁同步电机的控制系统设计具有一定的借鉴作用。 相似文献
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无轴承永磁同步电机作为一种新型电机,它继承了永磁同步电机大功率、长寿命、高效率和小体积等优点;同时由于减少了机械轴承,拓展了高速电机在微型化、大功率范围领域的应用。该文介绍了无轴承永磁同步电机的工作原理;综述了近来年无轴承永磁同步电机结构与控制策略等方面的研究概况;总结了研究中存在的问题并展望了发展趋势。 相似文献
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Masahide Ooshima Satoru Miyazawa Tazumi Deido Akira Chiba Fukuzo Nakamura Tadashi Fukao 《Electrical Engineering in Japan》1996,117(4):95-108
Super-high-speed and high-power electric machines are required for turbomolecular pumps and spindle drives. High rotational speed and high-power drives can be achieved with bearingless motors. In this paper, a bearingless motor with principles of permanent magnet-type synchronous motors is proposed. High-power factor and high efficiency can be expected in permanent magnet-type bearingless motors. The proposed bearingless motor is a 4-pole permanent magnet synchronous motor, in which additional 2-pole windings are wound together with 4-pole motor windings in stator slots. With currents of 2-pole windings, radial magnetic forces are produced to support a rotor shaft. Principles of radial force production of surface-mounted permanent magnet bearingless motors are analyzed mathematically. The relationships between radial forces and the permanent magnet thickness were derived. From these relationships, the optimal permanent magnet thickness to produce radial forces efficiently is found. A test machine was built to confirm the relationships of radial forces, currents and voltages. 相似文献
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Oshima M. Miyazawa S. Deido T. Chiba A. Nakamura F. Fukao T. 《Industry Applications, IEEE Transactions on》1996,32(2):363-370
Super high-speed and high-power electric machines are required for turbomolecular pumps and spindle drives. High rotational speed and high power drives can be achieved with bearingless motors. In this paper, a bearingless motor with the principles of permanent magnet type synchronous motors is proposed. High power factor and high efficiency can be expected in permanent magnet type bearingless motors. The proposed bearingless motor is a 4 pole permanent magnet synchronous motor, in which additional 2-pole windings are wound together with 4-pole motor windings in stator slots. With currents of 2-pole windings, radial magnetic forces are produced to support a rotor shaft. Principles of radial force production of surface-mounted permanent magnet bearingless motors are analyzed mathematically. It was found that radial forces are efficiently produced by employing thin permanent magnets on the surface of rotor iron core. A test machine was built in order to measure inductance functions as well as relationships between voltages and currents 相似文献
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无轴承永磁同步电机控制系统设计与仿真 总被引:2,自引:0,他引:2
无轴承永磁同步电机稳定运行的前提条件是要实现电磁转矩和径向悬浮力之间的动态解耦控制。本文介绍了无轴承永磁同步电机径向悬浮力和数学模型,采用基于转子磁场定向控制策略设计了无轴承永磁同步电机矢量控制系统。利用Matlab/Simulink工具箱对控制系统作了仿真研究。结果表明控制系统不仅可以实现转子稳定悬浮,而且电机具有良好的动静态性能。 相似文献
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