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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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Real-time implementation of direct torque control of an induction machine by fuzzy logic controller 用模糊控制器实时实现感应电机直接转矩控制
F. Bacha, R. Dhifaoui, H. Buyse
This paper proposes a new approach for direct torque control (DTC) based on fuzzy logic concept The developed fuzzy logic controller (FDTC) uses mainly the inputoutput data. Its real-time implementation is described and experimental and simulation results are compared. Sufficient agreement between the two results has been obtained.
本文提出了一种基于模糊逻辑概念的直接转矩控制(DTC)的新方法,所开发的模糊控制器(FDTC)主要使用输入输出数据。描述了其实时实现,并对实验结果和仿真结果进行了比较。这两个结果已经得到了充分的一致。
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引用次数: 33
Dynamic performance for turbo generator under low excitation and loss of field 汽轮发电机在低励磁和失磁条件下的动态特性
Liu Tao, Zhou Qian, W. Xiang-heng, S. Peng-sheng, Wang Weijian
Using the Park equations and considering speed governor and excitation regulation, this paper simulates the process of asynchronous generator under low excitation and loss of field. Experimental results verify the mathematical model and the simulation results. Further, according to the values calculated under low excitation, such as voltage, current, speed and power angle, the general movement trend and frequency are discussed.
利用Park方程,考虑调速器和励磁调节,模拟了异步发电机在低励磁和失磁条件下的运行过程。实验结果验证了数学模型和仿真结果。根据低激励条件下的电压、电流、转速、功率角等计算值,讨论了电机的总体运动趋势和频率。
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引用次数: 5
An accurate model of squirrel cage induction machines under rotor faults 转子故障下鼠笼式感应电机的精确模型
V. Devanneaux, H. Kabbaj, B. Dagues, J. Faucher
A substantial portion of squirrel cage induction motor faults is rotor related. An accurate transient model of squirrel cage induction machines under rotor faults is presented. A coupled magnetic circuits approach is used and very few restrictive assumptions are made. All parameters are calculated from the actual geometry and winding layout of the machines rather than from transformed or equivalent variables. The detailed depiction of the procedure needed to implement such an accurate model with simulation results is the subject of this paper.
鼠笼式异步电动机的大部分故障与转子有关。建立了鼠笼式感应电机转子故障下的精确暂态模型。采用了一种耦合磁路方法,并且很少做限制性假设。所有参数都是根据机器的实际几何形状和绕组布局计算的,而不是从转换或等效变量计算的。本文的主题是详细描述实现如此精确的模型和仿真结果所需的过程。
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引用次数: 12
The out-of-step protection with prediction function for generators 带预测功能的发电机失步保护
Bi Daqiang, W. Xiang-heng, Xu Zhenyu, Wang Weijian
This paper puts forward a developed scheme against the deficiencies of the out-of-step protection based on the three-impedance element principle, which is widely applied at present. Compared with the original scheme, the developed scheme can predict the out-of-step caused by steady stability disruption or transient instability by using the least square method in advance and monitor the limit of steady stability. So the performance of the out of step protection is improved. The paper gives the whole developed protection scheme. The results of dynamic simulation experiments verify the scheme.
针对目前应用广泛的三阻抗元件失步保护的不足,提出了一种改进方案。与原方案相比,该方案可以利用最小二乘法提前预测稳态破坏或暂态失稳引起的失步,并监测稳态极限。从而提高了失步保护的性能。本文给出了整个开发的保护方案。动态仿真实验结果验证了该方案的有效性。
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引用次数: 1
A comparison with insulation system for PWM-inverter-fed induction motors pwm -逆变式异步电动机绝缘系统的比较
D. Hwang, Doh-Young Park, YongJun Kim, Young-Hoon Lee, Dong-Hee Kim, In-Woo Lee, Ick-Goo Hur
The winding insulation of low-voltage induction motors in adjustable-speed drive system with voltage-fed inverters is substantially stressed due to the uneven voltage distribution and excessive voltage stress (dv/dt), which result in the premature insulation breakdown. This paper describes test results of the insulation characteristics from 20 HP, 380 V induction motors for inverter applications. Five different types of insulation techniques are applied to 19 induction motors. The insulation characteristics are compared to partial discharge, capacitance, AC current, and dissipation factor tests. Also, the insulation breakdown tests by high voltage pulses are performed, and the corresponding breakdown voltages are obtained.
电压馈电逆变器调速系统中低压感应电动机绕组绝缘由于电压分布不均匀,电压应力过大(dv/dt),导致绕组绝缘过早击穿。本文介绍了用于逆变器的20hp, 380v感应电动机绝缘特性的测试结果。五种不同类型的绝缘技术应用于19个感应电机。将绝缘特性与局部放电、电容、交流电流和耗散因数测试进行比较。并进行了高压脉冲绝缘击穿试验,得到了相应的击穿电压。
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引用次数: 4
Novel on-line partial discharge monitoring system for generator/motor stator insulations 新型发电机/电机定子绝缘局部放电在线监测系统
YongJun Kim, D. Hwang, Doh-Young Park, S. Song
Nowadays on-line monitoring scheme with trending technique is widely adopted in insulation diagnosis. In this paper, two types of online monitoring instrumentation for an insulation diagnosis are proposed. The first unit obtains the parameters such as partial discharge magnitude and dynamic stagnation voltage (DSV) in selected frequency bands. The partial discharge activities can be interpreted more precisely by these techniques. The second one indicates the partial discharge spectra in reduced time resolution with lower cost. Several online sensors for partial discharges monitoring are also introduced.
目前在绝缘诊断中广泛采用趋势技术在线监测方案。本文介绍了两种用于绝缘诊断的在线监测仪器。第一个单元在选定的频段内获得局部放电幅度和动态滞止电压等参数。这些技术可以更精确地解释局部放电活动。第二种是低成本、低时间分辨率的局部放电光谱。介绍了几种局部放电在线监测传感器。
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引用次数: 3
A novel DC-rail parallel resonant ZVT VSI for three-phase AC motor drive 一种用于三相交流电机驱动的新型直流导轨并联谐振ZVT VSI
Ming Zhengfeng, Zhong Yanru, Sun Xiangdong, Mo Hongping
This paper proposes a novel circuit of DC-rail parallel resonant zero voltage transition voltage-source inverter (DC-Rail PR ZVT VSI) for three-phase motor drive. In this circuit all switches are turned on or turned off under the zero voltage switching (ZVS) or zero current switching (ZCS) without high stress of voltage and current. Power ratings of the resonant components and auxiliary switches required are small. The control scheme is simple and less dependant on load current This paper gives details of the theoretical analysis, the rules of selecting the auxiliary switches and the commutation components and the control strategy of the proposed circuits. Finally, the validity and the efficiency of the circuit are tested and verified by experiment results. Some questions in practical application are discussed.
本文提出了一种用于三相电机驱动的直流轨道并联谐振零电压转换电压源逆变器电路(DC-rail PR ZVT VSI)。在该电路中,所有开关都在零电压开关(ZVS)或零电流开关(ZCS)下接通或关断,没有高电压和电流应力。所需的谐振元件和辅助开关的额定功率很小。本文详细介绍了该控制方案的理论分析、辅助开关和整流元件的选择原则以及所提出电路的控制策略。最后,通过实验结果验证了该电路的有效性和效率。讨论了实际应用中的一些问题。
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引用次数: 10
Study and design of large capacity high efficiency permanent magnet synchronous motor 大容量高效永磁同步电机的研究与设计
Zhao Qing, An Zhong-liang, Tian Lijian, Wu Yanzhong, Tang Renyan, Yu Shenbo
The rotor structural design and anti-demagnetization method are studied on the 1120 kW permanent magnet synchronous motor (PMSM) in the design and manufacturing process in this paper. The rotor structure, which has the merits of sufficient anti-demagnetization and strong rigidity, is designed. Design and manufacture of the motor has been worked out.
本文研究了1120kw永磁同步电动机在设计和制造过程中的转子结构设计和防退磁方法。设计了抗退磁能力强、刚性强的转子结构。完成了电机的设计与制造。
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引用次数: 2
A new algorithm for flux and speed estimation in induction machine 感应电机磁链和转速估计的新算法
Yang Wenqiang, Jia Zhengchun, Xu Qiang
A new reduced-order extended Kalman filter to estimate the rotor flux components and speed of an induction machine for speed sensorless vector control is proposed. With this method, two rotor flux components are selected as the state variables, and the rotor speed as an estimated parameter is regarded as an augmented state variable. The algorithm with reduced order decreases the computational complexity and makes the proposed estimator feasible to be implemented in real time. The simulation results show high accuracy of the estimation algorithm, and verify the usefulness of the proposed algorithm.
针对无速度传感器矢量控制中感应电机转子磁链分量和转速的估计问题,提出了一种新的降阶扩展卡尔曼滤波器。该方法选取两个转子磁链分量作为状态变量,将转子转速作为估计参数作为增广状态变量。降阶算法降低了计算复杂度,使所提出的估计器能够实时实现。仿真结果表明该算法具有较高的估计精度,验证了该算法的有效性。
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引用次数: 9
Speed sensor-less control of an induction machine with rotor flux tracking at very low speed 低速下转子磁链跟踪感应电机无速度传感器控制
Dong Lei, Li Yongdong, Chai Jianyun, W. Wensen
This paper presents a novel method to estimate the rotor flux position of an induction machine by injecting a high frequency signal at very low speed, including zero speed. When the high frequency fluctuating signal is injected in the terminal of an induction machine, the difference of impedance between the d-axis and q-axis of the synchronous rotating reference frame can be measured. This phenomenon is explained by a high frequency model of the induction machine, which is oriented with a high frequency signal space vector. The rotor flux angle can thus be tracked by tuning the space vector of the high frequency signal. Experimental results are provided to verify that this algorithm is robust against parameters variations and load changes.
提出了一种在极低转速下(包括零转速)注入高频信号来估计感应电机转子磁链位置的新方法。在感应电机的末端注入高频波动信号,可以测量同步旋转参考系d轴和q轴之间的阻抗差。这种现象可以用感应电机的高频模型来解释,该模型以高频信号空间矢量为导向。因此,可以通过调谐高频信号的空间矢量来跟踪转子磁通角。实验结果验证了该算法对参数变化和负载变化的鲁棒性。
{"title":"Speed sensor-less control of an induction machine with rotor flux tracking at very low speed","authors":"Dong Lei, Li Yongdong, Chai Jianyun, W. Wensen","doi":"10.1109/ICEMS.2001.971904","DOIUrl":"https://doi.org/10.1109/ICEMS.2001.971904","url":null,"abstract":"This paper presents a novel method to estimate the rotor flux position of an induction machine by injecting a high frequency signal at very low speed, including zero speed. When the high frequency fluctuating signal is injected in the terminal of an induction machine, the difference of impedance between the d-axis and q-axis of the synchronous rotating reference frame can be measured. This phenomenon is explained by a high frequency model of the induction machine, which is oriented with a high frequency signal space vector. The rotor flux angle can thus be tracked by tuning the space vector of the high frequency signal. Experimental results are provided to verify that this algorithm is robust against parameters variations and load changes.","PeriodicalId":143007,"journal":{"name":"ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125521954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
期刊
ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501)
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