机械制冷机用直线电机驱动电路的谐波特性研究  

Research on Harmonic Characteristics of Linear Motor Drive Circuit for Mechanical Cryocooler

作　　者：李战兵[1,2] 杨宝玉[1] 倪天智[1,2] 张家昆 

机构地区：[1]中国科学院上海技术物理研究所,上海200083 [2]中国科学院大学,北京100049

出　　处：《红外》2017年第4期28-33,共6页Infrared

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%。The harmonic characteristics of linear motor drive c ircuits 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 fil ter design on the harmonic characteristics of the drive circuit is explored. The fil ter is optimized by studying the relationship between the changes of inductance L and capacitance C of the filter and the output harmonics. The optimized fil ter is improved greatly in performance. The Total Harmonic Distor tion （THD） of the output drive is reduced from 4% to 1.96%.

关 键 词：直线电视驱动电路 LC滤波器 谐波 

分 类 号：TM359.4[电气工程—电机] TB651[一般工业技术—制冷工程]