【作者】 于明湖；

【导师】 叶云岳； 卢琴芬；

【作者基本信息】 浙江大学 ， 电机与电器， 2011， 博士

【摘要】 传统冰箱压缩机大多是采用旋转电机加曲柄联轴驱动的往复式活塞压缩机,此种方式由于中间转换环节的存在使得整体传动效率低下。永磁直线压缩机是一种采用永磁直线振荡电机直接驱动的新型压缩机,传动效率高,在制冷压缩机领域的应用日益得到重视。本论文在国家教育部博士点基金项目(200803350051)资助下,从开发高效节能的新型制冷压缩机出发,以动磁式直线压缩机系统及驱动用永磁直线振荡电机为主要研究对象。本文根据现有的实验条件,在对横向磁通永磁直线振荡电机本体及工作特性深入研究的基础上,进一步提出了新型的动磁式横向磁通直线压缩机,并对其进行了深入的研究,主要研究成果包括：1.深入分析了横向磁通永磁直线振荡电机,建立了横向磁通永磁直线振荡电机线性机电系统模型。在此基础上,通过解析法研究了气体力负载及频率对于电机工作特性的影响,并通过矢量图及仿真的方式进行了进一步分析,最后通过实验进行验证。2.实现了电机的动子位移估算算法,并结合对于动子平衡点的偏移补偿初步实现了横向磁通直线振荡电机上止点控制。在对直线振荡电机工作特性进行详细分析的基础上,研究并对比了电机谐振频率跟踪策略,最后结合动子位移估算算法实现了电机的高效控制策略。3.基于现有横向磁通永磁直线振荡电机的基础上,提出了一种一体化动磁式横向磁通直线压缩机。使用有限元软件建立了三维模型,求得了电机气隙磁场及电磁推力特性,详细分析多个关键参数对电机性能的影响,并由样机的空载与负载实验结果进行验证。研究结果为进一步深入研究动磁式横向磁通直线压缩机提供了详实的实验数据。更多还原

【Abstract】 The conventional refrigerator compressor is the reciprocating piston compressor driven by rotary motor with crank-shaft mechanism. Its efficiency is low due to existing middle transforming mechanism. In order to improving the efficiency of compressor, the novel linear compressor is developed, which is directly driven by permanent magnet linear oscillatory actuator. Now, its application is becoming more and more popular in refrigeration compressors. This dissertation is supported by a grant from the Ph.D. Programs Foundation of Ministry of Education of China. And in order to develop a novel compressor with high-efficiency and energy-saving, the research theme of this dissertation is this kind moving magnet linear compressor system and its permanent magnet linear oscillatory actuator.Based on the available experiment situations in Lab and detailed investigation of the linear oscillatory actuator and its operating characteristics, a novel transverse-flux linear compressor is proposed and in-depth study is also given. The main study works are follows:1. Based on detailed investigation of the transverse-flux linear oscillatory actuator, the linear electro-mechanical system model was established. The effect of gas force load and operating frequency on the operating characteristics was analyzed. In combination with simulated analysis and vector model, the effect was further studied, and the predicted analysis was validated by corresponding experimental results.2. An estimation method of mover position was present, and the top dead point control of linear compressor was also achieved with the mover equilibrium position offset compensation. Based on in-depth study on the operating characteristics, the resonant frequency tracking strategy was compared and analyzed. Finally, a novel strategy of high efficiency control was achieved in combination with estimation method of mover displacement.3. Based on the improvement of the available transverse-flux permanent magnet linear oscillatory actuator, a novel transverse-flux linear compressor was proposed. Based on 3D finite element model established by ANSOFT, the air-gap magnetic field and the characteristics of electromagnetic force were calculated, and then the effect of key parameters on performance of actuator was also investigated. The predicted results are validated by prototype experiments of no-load test and load test. The experiment results could help further study on the novel transverse-flux linear compressor.更多还原