发布时间：2015-01-23 来源：人大经济论坛

自动化专业论文范文 目 录 摘 要……………………………………………………………………………………I Abstract……………………………………………………………………………………I 第1章 绪论………………………………………………………………………………1 1.1电冰箱的种类及发展趋势………………………………………………………1 1.1.1电冰箱用压缩机的工作原理及变频电机的设计…………………………1 1.2压缩机电机的现状………………………………………………………………3 1.3变频技术研究现状及发展………………………………………………………5 1.3.1变频技术现状………………………………………………………………6 1.3.2变频技术发展状况…………………………………………………………7 第2章 单相电容起动异步电动机设计…………………………………………………7 2.1单相异步电动机的工作原理及特点……………………………………………7 2.1.1单绕组的转子磁场和电磁转矩……………………………………………10 2.1.2单绕组的定子磁场和电磁转矩……………………………………………11 2.2单相电容启动异步电动机的工作原理及特点…………………………………17 2.3压缩机电机的工作原理及特点…………………………………………………17 第3章 电容启动电动机电磁方案设计………………………………………………20 3.1数据与技术要求…………………………………………………………………20 3.2重要尺寸及冲片…………………………………………………………………21 3.3主绕组设计计算…………………………………………………………………23 3.4主相参数计算……………………………………………………………………24 3.5磁路计算…………………………………………………………………………30 3.6铁耗和机耗计算…………………………………………………………………34 3.7副绕组设计计算…………………………………………………………………35 3.8起动性能计算……………………………………………………………………36 3.9运行性能计算……………………………………………………………………37 3.10有效材料用量……………………………………………………………………41 第4章 变频系统设计……………………………………………………………………43 4.1变频调速的原理及变频调速电机的应用前景……………………………………43 4.1.1变频调速的原理………………………………………………………………43 4.1.2变频调速电机的应用前景…………………………………………………45 4.2电容启动电动机电路和变频电路的选用………………………………………45 4.2.1电容启动电动机电路……………………………………………………45 4.2.2变频电路的选用……………………………………………………………46 4.3单相电容电机变频调速原理…………………………………………………….47 4.4单相电机变频调速系统的实现……………………………………………………48 4.4.1 PWM信号生成电路…………………………………………………………….48 4.4.2驱动电路…………………………………………………………49 参考文献……………………………………………………………………………………50 致 谢……………………………………………………………………………………51 附 录………………………………………………………………………………….52 定子冲片……………………………………………………………………………..53 定子绕组展开图………………………………………………………………………54 转子冲片………………………………………………………………………………55 总装图…………………………………………………………………………………56 摘 要：制冷压缩机为制冷设备的动力之源，变频冰箱使用了变频压缩机，该种变频压缩机采用了可调速电机。通过改变电动机的转速来改变压缩机的制冷量。变频压缩机采用无刷直流电动机，本文对制冷压缩机用单相异步电动机的设计、变频调速等方面进行了探讨分析，并对提高电动机效率以及减小噪声提出了相关建议和措施。随着变频技术日趋成熟，变频压缩机具有能够迅速﹑连续地提供制冷，提高效率，降低噪音，提高运行可靠性等优点,成为新一代制冷设备的发展趋势。 关键词：变频调速；制冷；电容启动；单相异步电动机 FB-515 Medical use frequency conversion is it refrigerate electric capacity start design of motor rapidly to transfer ABSTRACT: Medicine uses refrigeration compressor as " heart "of the medical use refrigerator,It urges electrical machinery to consider that can be steady in a long-term in compressing the chassis that work reliably,And also reach the best match with compressing the organism ,thus improve the security of the compressor and performance index,obtain the greatest interests.Analyse the discussion in such as this text uses to the refrigeration compressor with the design , material of the single different step motor,And to improve motor efficiency and reduce noise get relevant suggestions and measures out of. With the development of electric and electronic technology,frequency conversion technology is becoming riper.There are the frequency conversion compressors rapidly.Offer refrigeration in succession,raise the efficiency,reduce the noise,improve such advantages as operation dependability ,etc,in order to become a new a developing direction with refrigeration equipment.So in carry on research to frequency conversion technology use from compressor too in the article originally. Keywords: Frequency conversion adjusts the speed; Refrigeration; The electric capacity start， Single different step motor