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题名	单边直线感应电机特性研究; 单边直线感应电机特性研究
作者	1徐伟,电工研究所
学位类别	博士
答辩日期	2008-06-06
授予单位	中国科学院电工研究所
导师	1孙广生,电工研究所
关键词	单边直线感应电机 T型等效电路 轨道交通 横向边缘效应 纵向边端效应 垂直力 电磁设计 特性优化 目标函数 混和罚函数法 遗传算法 绕组函数理论 参数测量 稳态特性 暂态特性 single-sided linear induction motor(SLIM) T-model equivalent circuit railway transportation transverse edge effect longitudinal end effect vertical force electromagnetic design performance optimization objective function sequential unconstrained minimization technique (SUMT) genetic algorithm (GA) winding function theory parameter measurement steady state transient state
其他题名	单边直线感应电机特性研究
中文摘要	单边直线感应电机驱动列车是一种新型的轨道交通技术。本文以单边直线感应电机的特性研究为对象，重点研究了它的T型等效电路模型、电磁优化设计方法和绕组函数模型。主要内容有： （1）为得到单边直线感应电机特性分析的实用模型，本文从电磁场的基本方程和初次级场量复功率相等的角度出发，考虑横向边缘效应、纵向边端效应、初级端部半填充槽、次级铁轭电阻、铁损电阻和磁路饱和等影响因数，推导出电机的改进T型等效电路。它分别用四个等效系数校正端部效应对电机互感和次级电阻的影响。计算和试验结果表明，该模型比较适合电机的稳态性能分析。 （2）为改善牵引单边直线感应电机低效率和低功效的缺点，本文提出了一种改进的遗传混和罚函数法，对电机的结构参数进行了优化。论文在牵引电机推力不变的前提下，以效率最大、初级增加重量最小为目标函数，寻优得到最佳的电磁方案。计算结果表明，它有效的提高了电机整个运行过程中的效率和功效指标。在此基础上，论文结合实际需求，综合考虑传统和变频驱动下的感应电机设计原则，完成了190kW和12kW单边直线感应电机的电磁优化设计。 （3）为研究牵引单边直线感应电机的动态特性，本文考虑了次级导板涡流、初级端部半填充槽和初级绕组结构分布等因数，推导出电机在α-β坐标系下的绕组函数电路模型。结合旋转感应电机的等效模型，论文明确了绕组函数模型中涡流和半填充槽对直线感应电机互感矩阵的影响。 （4）为研究单边直线感应电机运行过程中纵向边端效应对互感的影响，论文深入对比分析了电机的绕组函数模型法和Duncan模型法。两种方法的计算结果表明，电机互感在运行过程中的变化趋势一致，即随速度的增加先减小，后趋于平缓。 （5）为保证单边直线感应电机特性分析的合理性，论文提出了一种改进的T型电路参数测定方案。通过简单的开路和短路试验，它有效获取并校正了电机的额定电气参数。论文用绕组函数稳态模型法对单边直线感应电机在恒定电流恒定频率、恒定电压恒定频率、不同频率不同电流起动、滑差频率控制和间接磁场定向控制等工况下的特性变量进行了理论分析和试验测量，证明了该模型的有效性。为描述牵引单边直线感应电机在不同情况下的电磁过渡状态，论文用绕组函数暂态模型法对五种典型工况进行了研究，详细分析了电机推力、次级基波电流的暂态变化过程，为实际运行提供了相应参考。 The vehicle drived by single-sided linear induction motor (SLIM) is a new type of railway transportation technology. This dissertation aims to study the SLIM performance. The investigation focuses on the T-model equivalent circuit, optimal design method and winding function model about SLIM. The dissertation is summarized as follows. (1)Based on electromagnetic field fundamental equations, complex power balance between primary and secondary, an improved T-model equivalent circuit of SLIM is deduced considering the transverse edge effect, longitudinal end effect, primary half-filled slots, secondary york resistance, iron loss resistance and magnetic path saturation, in which four coefficients separately are used to rectify mutual inductance and secondary resistance influenced by end effects. Results of calculation and experiment indicate that it is good in study of SLIM stable state performance. (2)To improve efficiency and power factor-efficiency of SLIM in traction, a new genetic sequential unconstrained minimization technique algorithm to optimize its structure parameters is provided. Under the conditions of constant thrust, the better design scheme by using this algorithm is gained taking maximal efficiency and minimal primary increasable weight as objective functions, which improves SLIM efficiency and power factor-efficiency notably in the whole operating process. Based on the above work and practical requirement, the electromagnetic optimal designs of 190kW and 12kW SLIMs are completed according to traditional and inverter-driven induction motor design rules. (3) In order to analyze dynamic characteristic of SLIM, winding function equivalent circuit in α-β coordinate is derived, in which eddy current in secondary conductive sheet, primary half-filled slots and primary winding configuration are in consideration. Based on the equivalent circuit of rotary induction motor (RIM), the influence on mutual inductance matrix of SLIM brought by eddy current and half-filled slots is identified clearly. (4) To find out SLIM mutual induction variation impacted by longitudinal end effect, Comparison between winding function model and Duncan model is made. The outcome states clearly that mutual inductions calculated by two methods are identical whose values decrease initially and stabilize gradually with speed ascension. (5) A modified measurement method about T-model circuit parameters is put forward so as to guarantee performance study rationality. By simple open-secondary and block-secondary tests, SLIM rating equivalent parameters are acquired and rectified effectively. On the basis of SLIM winding function steady state circuit, simulations and experiments about motor performance are validated each other effectually under constant current constant frequency, constant voltage constant frequency, variable frequency variable current at starting point , slip frequency control and indirect field orientation control conditions. In order to describe SLIM electromagnetic transition in different operating modes, research is made on five typical situations by winding function transient state circuit. The thrust and secondary fundamental current variation curves are explained in detail so as to offer some useful information to SLIM real operation.
语种	中文
公开日期	2010-10-18
页码	120
分类号	TM1;TM921
内容类型	学位论文
源URL	[http://ir.iee.ac.cn/handle/311042/6758]
专题	电工研究所_其他部门_其他部门_博士学位论文
推荐引用方式 GB/T 7714	1徐伟,电工研究所. 单边直线感应电机特性研究, 单边直线感应电机特性研究[D]. 中国科学院电工研究所. 2008.

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