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六相异步电机的绕组结构及其仿真研究 总被引:8,自引:1,他引:7
本文阐述了多相电机相数的定义和六相异步电机的绕组结构,建立了六相异步电机静止坐标系下的仿真模型,给出了用Matlab/Simulink实现的具体步骤。仿真结果表明该模型的有效性,为研究不同工况下,特别是缺相运行时六相异步电机的动态性能仿真奠定基础,并极易扩展到任意相交流电机的建模和仿真研究中。 相似文献
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多相电机具有相冗余特性,发生故障后仍可缺相运行.为准确模拟电机缺相运行工况,提出一种多相电机缺相故障仿真模型,采用不降阶方式建立电机缺相模型,并重构故障后相绕组电压以满足故障相电流为零的条件,从而模拟电机缺相情况.基于MATLAB/Simulink对缺相模型进行仿真,研究了多相电机在不同缺相故障情况下的电流特性,并利用... 相似文献
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两相不对称电机矢量控制和直接转矩控制的比较 总被引:1,自引:0,他引:1
矢量控制与直接转矩控制是当前主要的两种电机变频调速控制方法,已在两相交流感应电机中得到了应用。分析了两相不对称电机矢量控制和直接转矩控制原理以及两相三桥臂逆变器的SVPWM实现方法:运用Matlab的Simulink建立了两相不对称交流感应电机矢量控制和直接转矩控制调速系统的仿真模型并对两种控制系统进行了仿真研究,给出了仿真波形,进行了特性比较. 相似文献
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运用MATLAB/SIMULINK工具建立了两相不对称交流感应电机矢量控制调速系统的仿真模型;介绍了两相不对称电机矢量控制的基本原理和两相三桥臂逆变器的SVPWM工作原理。对两相不对称电机矢量控制调速系统进行仿真研究,给出了电机矢量控制调速的仿真实验波形。 相似文献
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船舶电力推进中十五相感应电机同轴运行及容错控制策略 总被引:1,自引:0,他引:1
同轴双十五相电机推进系统具有高可靠性、能容错运行、能驱动较重负载等优势,因此其在船舶电力推进中的应用具有重要意义。本文首先分析建立了十五相电机的数学模型,在此基础上建立了十五相感应电机和螺旋桨负载的仿真模型。通过广义派克变换矩阵的建立,设计了十五相电机转子磁场定向矢量控制策略,并结合同轴电机的转矩随动控制,得到了转矩随动矢量控制策略。分析了断相故障下十五相电机气隙磁场的变化,研究了切除对称分布定子相绕组的容错控制策略。通过Matlab/Simulink中的仿真模型,说明了同轴双十五相电机推进系统控制策略的有效性和容错控制策略的可行性。 相似文献
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Xianglin Cao Atsushi Kurita Hitoshi Mitsuma Yasuyuki Tada Hiroshi Okamoto 《Electrical Engineering in Japan》1999,128(3):53-62
The present paper proposes the use of a phase‐domain (abc frame) generator model in electromagnetic transient analysis instead of the conventional dq0‐domain generator model in order to improve numerical stability. The drawback of the conventional dq0‐domain machine model is that the prediction of a number of electrical variables as well as machine speed is needed in order to interface the circuit of a machine model with the rest of the power system network, and the prediction of these variables leads to numerical instability. In contrast, prediction of electrical variables is not needed in the proposed phase‐domain model. In this paper, the phase‐domain machine model is developed. The proposed model is validated by comparisons with an existing EMTP type‐59 machine model. The paper makes it clear that numerically stable solutions are obtained by using the proposed model even in cases where numerical instabilities occur when the existing type‐59 model is used. © 1999 Scripta Technica, Electr Eng Jpn, 128(3): 53–62, 1999 相似文献
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AbstractThis paper presents a novel method based on Magnetic Equivalent Circuit (MEC) to model the wound rotor three-phase induction machine under healthy and faulty conditions. Different parameters of machine such as the number of poles, number of slots, winding configuration and dimension can be selected based on designed properties of a given machine. Internal phase to phase fault is also detected by stator current signature analysis in dq frame. Saturation effect is modeled by a tunable function as well as the core nonlinearity characteristic is considered. Finally, Finite Element Method (FEM) is used to evaluate the accuracy of the proposed MEC model. Short computational time of MEC method shows that this model is suitable for electrical machine modeling and analysis. 相似文献
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考虑主磁路瞬态饱和时异步电机的仿真模型 总被引:3,自引:0,他引:3
根据考虑主磁路瞬态饱和时三相异步电机在(d,q)静止坐标系下的数学模型,利用MATLAB软件中的动态仿真工具Simulink建立了一个新的三相异步电机的瞬态仿真模型,通过实例仿真证明了该方法的有效性。 相似文献
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P. G. Kolpakhch’yan V. G. Shcherbakov A. E. Kochin A. R. Shaikhiev 《Russian Electrical Engineering》2017,88(6):366-371
It is proposed to use a simple switched-reluctance electric machine that does not have windings or permanent magnets on a movable part to develop a linear reciprocating electric machine intended for use as an electric generator together with a free-piston internal-combustion engine. It is noted that one of the most difficult problems in the development of such a linear electric machine is the development of a control system. A sensorless control algorithm is considered. Information on the stator-phase inductance of the electric machine and its variation is used to determine the position of the movable part. For its estimation, probing voltage pulses of known duration are applied to the phase. The amplitude of the current pulses caused by them will be proportional to the phase inductance. A mathematical model of electromagnetic processes is used to test the efficiency of the proposed control algorithm and determine appropriate control parameters. Since stator phases have separate magnetic circuits and are not magnetically connected, the electromagnetic processes in each phase are considered independently. Model parameters are determined experimentally using an experimental prototype of the considered electric machine, for which the dependences of the phase flux linkage and the generated force on the phase current for different positions of the movable part are obtained. The results of the investigation of processes in the considered electric machine at different frequencies of the movable part are given. It is found that, at frequencies of the movable part close to the nominal frequency, the phase should be connected to the power supply even before the movable part reaches the extreme position. Control using probing pulses applied to the operating phase is impossible, because the level of these pulses does not reach the maximum value until the phase is switched on. In this case, it is necessary to use the probing pulses of another, nonoperating phase to determine the position of the movable part. Such an algorithm makes it possible to control a linear reciprocating switched-reluctance electric machine at both low and high frequencies of the movable part. The obtained results confirmed the correctness of the adopted approaches to the development of a sensorless control algorithm. 相似文献
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A linear switched-reluctance electrical machine (LEM) intended to be used as an electric-power generator together with a free-piston internal-combustion engine (ICE) has been analyzed. Taking into account the hard service conditions of an electrical machine (EM) in close proximity to a cylinder ICE, hottemperature zones and heavy mechanical loads of the EM of the vent-inductor type have been recommended to be used. Development of a control system for this type of machine is one of the most complicated problems when developing it. It has been suggested to determine the reasonable principles and regulating algorithms of the machine that is being considered, as well as its regulation system and energy-data evaluation, on the basis of a model of the electromagnetic process. Taking into account the characteristic properties of the linear switched-reluctance machine as a modeling object, a mathematical model has been developed to solve the problems mentioned above. As stator phases have separate coil-flux guides and are not connected magnetically, the electromagnetic processes in each phase are analyzed independently. For experimental corroboration of ideas for design calculation, an experimental model of the machine has been constructed. Parameters required for modeling the characteristics’ correspondences of flux linkage and phase current’s generating force at various positions of a moving element have been determined for this machine experimentally. Performance of the linear switched reluctance electrical reciprocating machine has been analyzed with the mathematical model with moving-element movement frequencies unfeasible for study on a proving stand. Reasonable parameters of the current pulses’ phases of the machine have been determined, and its energy data have been evaluated. The obtained results have confirmed the correctness of the design approaches, choice of regulation principles, and adjustment of a linear vent-inductor electrical machine of forward and backward action and the feasibility of using it as an electric-power generator together with a free-piston ICE. 相似文献
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A full-order, voltage-behind-reactance synchronous machine model has recently been proposed in the literature. This paper extends the voltage-behind-reactance formulation for the electromagnetic transient program (EMTP)-type solution, in which the rotor subsystem is expressed in qd coordinates and the stator subsystem is expressed in abc phase coordinates. The model interface with the nodal-analysis network solution is non-iterative and simultaneous. An example of a single-machine, infinite-bus system shows that the proposed model is more accurate and efficient than several existing EMTP machine models 相似文献
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本文基于Maxwell2D仿真环境,建立了单相永磁同步电动机(SPPMSM)的仿真模型。对该电动机的动态性能进行了仿真研究,得到了电流、反电动势等曲线,结果有助于进一步研究单相永磁同步电动机。 相似文献