| 基于非线性电感分析的永磁直线同步电机电磁推力特性研究 |
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| 引用本文： | 刘成颖,王昊,张之敬,沈祥明. 基于非线性电感分析的永磁直线同步电机电磁推力特性研究[J]. 中国电机工程学报, 2011, 31(30) |
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| 作者姓名： | 刘成颖 王昊 张之敬 沈祥明 |
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| 作者单位： | 1. 清华大学精密仪器与机械学系,北京市海淀区,100084
2. 北京理工大学机械与车辆工程学院,北京市海淀区,100081 |
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| 基金项目： | “十一五”国家科技支撑计划重大项目(2006BAF01B09-05)~~ |
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| 摘 要： | 传统的永磁直线同步电机的电磁推力特性分析,一般采用恒定电感的分析模型,忽略了饱和效应和纵向端部效应。为了分析带负载情况下永磁直线同步电机的电磁推力特点,首先提出了一种考虑端部效应和饱和效应的非线性磁路模型。此模型不仅能计算稳态电感,还能计算电感的瞬态值。通过分析电感随电流、位置的变化规律以及三相电感不相等的现象,获得了基本的电感矩阵。经过dq变换和推力计算,得到了考虑饱和效应、位置变化和纵向端部效应的电磁推力公式。进一步发现直线电机的推力波动主要来自于饱和效应,并且波动的幅值与电流的2次方成正比。这意味着直线电机的推力特性随着负载的增加而恶化。最后采用齿形设计的方法,有效减小推力波动;采用电流环补偿的方法,使速度波动减小了70%。
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| 关 键 词： | 永磁直线同步电机 电磁推力特性 电感 |
Research on Thrust Characteristics in Permanent Magnet Linear Synchronous Motor Based on Analysis of Nonlinear Inductance |
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| LIU Chengying,WANG Hao,ZHANG Zhijing,SHEN Xiangming. Research on Thrust Characteristics in Permanent Magnet Linear Synchronous Motor Based on Analysis of Nonlinear Inductance[J]. Proceedings of the CSEE, 2011, 31(30) |
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| Authors: | LIU Chengying WANG Hao ZHANG Zhijing SHEN Xiangming |
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| Affiliation: | LIU Chengying1,WANG Hao2,ZHANG Zhijing2,SHEN Xiangming1(1.Department of Precision Instrument and Machinery,Tsinghua University,Haidian District,Beijing 100084,China,2.School of Mechanical & Vehicular Engineering,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | Analytical models of thrust characteristics in permanent magnet linear synchronous motor are generally presented with constant inductance.The effects of saturation and longitudinal end are neglected.In order to analyze the thrust characteristics with load,a new non-linear magnetic circuit analytic model was suggested.This analytic model which considered saturation phenomena and longitudinal end effect,not only could calculate steady-state inductance,but also calculated transient-state inductance.So the dyna... |
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| Keywords: | permanent magnet linear synchronous motor(PMLSM) thrust characteristics inductance |
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