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ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)最新文献

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The effects of time constants of synchronous machines on frequency-response characteristics 同步电机时间常数对频率响应特性的影响
Yang Junhua, Pan Guanhai
This paper analyses the effects of time constants on frequency-response characteristics and proposes the discrepancies of these effects. It is also points out some key points to process these constants and illustrates the methods by a prototype.
本文分析了时间常数对频率响应特性的影响,并提出了这些影响之间的差异。指出了这些常数的处理要点,并举例说明了处理方法。
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引用次数: 0
3D adaptive finite element method with edge elements [for machine calculations] 带边缘单元的三维自适应有限元法[用于机器计算]
J. Ryu, Yan Xiuke, C. Koh, Xie Dexin, S. Hahn
A 3D adaptive finite element analysis algorithm is developed for precise electric machine force and torque calculation. The edge elements are used in the analysis, and the nodal force method is introduced for force and torque calculation, respectively. The bisection method is adopted to refine the elements that have big local error, which is estimated using the field continuity condition at the interface between the adjacent elements. Through 2D and 3D numerical examples the validity of the developed algorithm is proved.
提出了一种用于精密电机力、转矩计算的三维自适应有限元分析算法。分析中采用边缘单元,引入节点力法分别进行力和力矩计算。采用对分法对局部误差较大的单元进行细化,利用相邻单元界面处的场连续条件对局部误差进行估计。通过二维和三维数值算例验证了该算法的有效性。
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引用次数: 1
Research on improving permanent magnetic generator output characteristic 提高永磁发电机输出特性的研究
Zhang Cunshan, Tianpei Feng
In this paper, the defects of traditional permanent magnetic generator were indicated and the measures for improving the output characteristic of permanent magnetic generator were brought forward. The experiments on a newly developed prototype show that the improved permanent magnetic generator have much better output characteristic, high reliability and favorable performance/price ratio.
指出了传统永磁发电机存在的缺陷,提出了改善永磁发电机输出特性的措施。在新研制的样机上进行的实验表明,改进后的永磁发电机具有较好的输出特性、较高的可靠性和较好的性价比。
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引用次数: 1
A novel digital position servo system using DSP and fuzzy PID 一种基于DSP和模糊PID的数字位置伺服系统
Ren Haipeng, L. Ding
The paper presents a cost effective and increased performance position servo system using the TMS320F240 digital signal processor (DSP) produced by Texas Instruments as microprocessor and brushless direct current motor (BLDCM) as executor. In order to make up for the drawback of conventional PID controls, the fuzzy PID is employed. The result of simulations and experiments has confirmed that the whole system is simple and reliable; the robustness of the system is improved by using fuzzy PID.
本文提出了一种以德州仪器公司TMS320F240数字信号处理器(DSP)为微处理器,以无刷直流电机(BLDCM)为执行器的高性价比位置伺服系统。为了弥补传统PID控制的不足,采用了模糊PID控制。仿真和实验结果表明,整个系统简单可靠;采用模糊PID,提高了系统的鲁棒性。
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引用次数: 4
Study of intelligent vector control system based on TMS320F240 基于TMS320F240的智能矢量控制系统研究
Wang Chengyuan, Li Haodong, Xia Jiakuan
According to the characteristic of alternating current permanent magnet synchronous motor (PMSM), this paper presents a practical solution of permanent magnet motor intelligent vector control using the TMS320F240 digital signal processor (DSP). Here DSP can finish fully digital control of the space angle and amplitude components of stator field together with a single neuron operation. It concretely elucidates implementation of both intelligent vector control system and producing space vector pulse width modulation (SVPWM) wave. Experimental results show that the system has good real-time quality and feasibility, and the chip has notable advantages of application in the digital motor control system.
根据交流永磁同步电机(PMSM)的特点,提出了一种利用TMS320F240数字信号处理器(DSP)实现永磁电机智能矢量控制的实用方案。在这里,DSP可以通过单个神经元运算完成定子磁场空间角和振幅分量的全数字化控制。具体阐述了智能矢量控制系统和产生空间矢量脉宽调制(SVPWM)波的实现。实验结果表明,该系统具有良好的实时性和可行性,在数字电机控制系统中具有明显的应用优势。
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引用次数: 3
An adaptive fuzzy control for AC servo system 交流伺服系统的自适应模糊控制
Sun Wei, W. Yao-nan
An adaptive fuzzy controller is developed for AC servo system to guarantee both global stability and performance. AC motor dynamics under consideration may include large nonlinear uncertainties, such as nonlinear load variations. The controller output method (COEM) is introduced and applied to the design of adaptive fuzzy control system. The method employs a gradient descent algorithm to minimize a cost function that is based on the error of the controller output. The cost function can be minimized through adapting some or all of the parameters of fuzzy controller. The proposed adaptive fuzzy controller is applied to a AC servo control problem and compared with a standard fuzzy controller. The simulation results show that the proposed control is effective and yields superior performance.
为了保证交流伺服系统的全局稳定性和性能,提出了一种自适应模糊控制器。所考虑的交流电机动力学可能包含很大的非线性不确定性,例如非线性负载变化。介绍了控制器输出法,并将其应用于自适应模糊控制系统的设计。该方法采用梯度下降算法来最小化基于控制器输出误差的代价函数。通过调整模糊控制器的部分或全部参数,可以使代价函数最小化。将所提出的自适应模糊控制器应用于交流伺服控制问题,并与标准模糊控制器进行了比较。仿真结果表明,所提出的控制方法是有效的,具有良好的性能。
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引用次数: 1
The method solving short-circuit impedance between two interleave windings in the multi-winding core-type transformer with finite element method 用有限元法求解多绕组铁芯型变压器中两个交错绕组之间的短路阻抗
Luo Logfu, Wang Ziya, Tong Tiaosheng
In this paper, the layout of the locomotive main transformer windings is given at the beginning. Then the six layout modes of its double-winding transformer are set forward. It is impossible to calculate accurately all kinds of short-circuit impedance of the double-winding transformer with the usual method. This paper solves the impedance with the finite element method (FEM). This paper describes the electromagnetic field theoretical bases, introduces two sets of FEM to solve the impedance, and finally gives the magnetic flux line of the transformer's symmetric section and calculation results. Experimental results show that the solved results with FEM is correct.
本文首先给出了机车主变压器绕组的布置方案。然后提出了其双绕组变压器的六种布置方式。用常规方法无法准确计算出双绕组变压器的各种短路阻抗。本文用有限元法求解了阻抗。本文阐述了电磁场的理论基础,介绍了两套有限元法求解阻抗,最后给出了变压器对称截面的磁通量线及计算结果。实验结果表明,有限元方法的求解结果是正确的。
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引用次数: 6
Industrial computer control system of 2000 kV high voltage power frequency testing transformer 2000kv高压工频试验变压器工控机控制系统
Cai Zhiyuan, Ma Shaohua, Wang Jian, Li Wei, Wang Er-zhi
In this paper, an industrial computer control system of 2000 kV HV power frequency testing transformer is presented, by which, a whole testing process can automatically perform according to the testing criterion or the initialization defined by an user. It can carry out power frequency withstand voltage tests and partial discharge tests as well as user-defined tests, and the test accuracy and the efficiency are improved largely due to using an industrial computer as the center of the whole control system. The signals acquisition and process methods are described, and both of the hardware structure and software design are also presented in this paper. The control system has been used for one year with success.
本文介绍了一种2000kv高压工频试验变压器的工控机控制系统,该系统可根据用户设定的试验准则或初始化自动完成整个试验过程。它可以进行工频耐压试验和局部放电试验,也可以进行用户自定义试验,由于采用了一台工控机作为整个控制系统的中心,大大提高了试验精度和效率。介绍了信号采集和处理方法,并给出了系统的硬件结构和软件设计。该控制系统已成功使用一年。
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引用次数: 0
Magnetic bearing control using H/sub /spl infin// fuzzy logic 磁轴承控制采用H/sub /spl模糊逻辑
Yang Fu, Liangyu Zhuang, Guo Zhuang, Yang Peng, Wang Qiaoling
In this paper, the authors introduce the composition of a magnetic suspension system and its principles, and give its mathematical model. The system adopts a DSP to deal with the data. The H/sub /spl infin// fuzzy controller is designed and the results of its simulation and actual control are given.
本文介绍了磁悬浮系统的组成和工作原理,并给出了磁悬浮系统的数学模型。系统采用DSP对数据进行处理。设计了H/sub /spl模糊控制器,并给出了仿真和实际控制结果。
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引用次数: 0
A novel scheme of propulsion system using soft-switched high frequency AC-AC converter for electric vehicle 一种采用软开关高频交-交变换器的电动汽车推进系统新方案
Ma Xianmin, Chen Quan-shi
A novel propulsion system scheme using a soft-switched high frequency AC-AC converter for an electric vehicle is proposed in this paper. The system consists of three parts: high frequency inverter, high frequency transformer and soft-switched high frequency AC-AC converter. The DC voltage of battery firstly is inverted into 20 kHz high frequency AC voltage, which is boosted and isolated by transformer, and then the output voltage of the transformer is served as voltage source to feed the AC-AC converter for driving the motor. Owing to using zero voltage switching technique, the propulsion system has advantages of high efficiency, high energy density, small volume and light weight.
提出了一种采用软开关高频交-交变换器的新型电动汽车推进系统方案。该系统由三部分组成:高频逆变器、高频变压器和软开关高频交流变换器。首先将蓄电池的直流电压倒转为20khz的高频交流电压,经变压器升压隔离后,变压器的输出电压作为电压源馈入交-交变换器驱动电机。由于采用了零电压开关技术,推进系统具有效率高、能量密度高、体积小、重量轻等优点。
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引用次数: 3
期刊
ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)
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