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机械制冷机用直线电机驱动电路的谐波特性研究
投稿时间:2017-02-16  最后修改时间:2017-02-27  点此下载全文
引用本文:李战兵,杨宝玉,倪天智,张家昆.机械制冷机用直线电机驱动电路的谐波特性研究[J].红外,2017,38(4):28~33
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作者单位E-mail
李战兵 中国科学院上海技术物理研究所 bingoleesmile@163.com 
杨宝玉 中国科学院上海技术物理研究所  
倪天智 中国科学院上海技术物理研究所  
张家昆 中国科学院上海技术物理研究所  
中文摘要:对机械制冷机用直线电机驱动电路的谐波特性进行了研究。选择一台150 W的直线电机作为研究对象,通过理论仿真和实验验证进行了输出电压的谐波分析,探究了滤波器设计对驱动电路谐波特性的影响。通过研究滤波器电感L和电容C的变化与输出谐波的关系对滤波器进行了优化。经过优化的滤波器在性能上得到了很大的提升,输出驱动的谐波总畸变率(Total Harmonic Distortion, THD)从4%降到了1.96%。
中文关键词:直线电机驱动电路  LC滤波器  谐波
 
Research on Harmonic Characteristics of Linear Motor Drive Circuit for Mechanical Cryocooler
Abstract:The harmonic characteristics of linear motor drive circuits for mechanical crycoolers are studied. Selecting a 150 W linear motor as the research object, the harmonic analysis of its output voltage is carried out by theoretical simulation and experimental verification. The influence of the filter design on the harmonic characteristics of the drive circuit is explored. The filter is optimized by studying the relationship between the changes of inductance L and capacitance C of the filter and the output harmonics. The optimized filter is improved greatly in performance. The Total Harmonic Distortion (THD) of the output drive is reduced from 4% to 1.96%.
keywords:linear motor drive circuit  LC filter  harmonic wave
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