辅助磁极式直线振荡电动机特性研究
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摘要
对一台带有辅助磁极直线振荡电动机的磁钢结构和运行特性进行了理论分析。实验测得样机的轴向比推力为24.1 N/A,通过空载扫频实验验证并测量了辅助磁极的磁弹簧刚度。该样机驱动一台脉冲管制冷机,170W输入电功下,能够在90 K温区得到9.6 W制冷量,电机效率达到82.5%,为空间红外焦平面以及冷光学器件的冷却提供了较好的选择。
Theoretical analysis was conducted on the structure of magnets and operating characteristic of a linear oscillating motor with side magnets. The specified force of the prototype motor is 24. 1 N / A obtained by experiment. In addition,the stiffness of magnetic spring was validated and measured at a series of frequencies under no load. The net cooling power of 9. 6 W at 90 K with input electric power of 170 W is achieved in a pulse tube cooler driven by this prototype motor. The motor efficiency reaches above 82. 5%. Finally,it's an alternative in the cooling for space- borne infrared focal plane and cold optic devices.
Theoretical analysis was conducted on the structure of magnets and operating characteristic of a linear oscillating motor with side magnets. The specified force of the prototype motor is 24. 1 N / A obtained by experiment. In addition,the stiffness of magnetic spring was validated and measured at a series of frequencies under no load. The net cooling power of 9. 6 W at 90 K with input electric power of 170 W is achieved in a pulse tube cooler driven by this prototype motor. The motor efficiency reaches above 82. 5%. Finally,it's an alternative in the cooling for space- borne infrared focal plane and cold optic devices.
引文
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[5]MATSUMOTO N.Development of a compressor for a mniature pulse tube cryocooler of 2.5 W at 65 K for telecommunication applications[C]//Advances in Cryogenic Engineering,2008,53:1100-1107.
[6]王晓涛,朱建,陈帅,等.液氮温区高效紧凑制冷机运行特性研究[C]//第十一届全国低温工程大会,2013:71-74.
[7]MATSUMOTO N.Development of a compressor for a miniature pulse tube cryocooler of 2.5 W at 65 K for telecommunication applications[C]//Advances in Cryogenic Engineering:Transactions of the Cryogenic Engineering Conference-CEC,2008,53:712-719.
[8]JACOB S.Development of a moving magnetlinearmotor pressure wave generator for a pulse tube refrigerator[M]//Cryocoolers 16.New York:Plenum Press,2011:361-369.
[9]刘冬毓,吴亦农,王维扬,等.斯特林制冷机电动机固有频率的理论与实验研究[J].西安交通大学学报,2006,40(11):1320-1324.
[2]NAST T,OLSON J,CHAMPAGNE P.Overview of lockheed martin cryocoolers[J].Cryogenics,2006,46(2/3):164-168.
[3]WILSON K B,GEDEON D R.Status of pulse tube cryocooler development at sunpower[M]//Cryocoolers 13.New York:Plenum Press,2005:31-40.
[4]BENSCHOP T.Development of high reliability cryogenic coolers at Thales Cryogenics[C]//International Cryocooler Engineering Conference,2002:1-4.
[5]MATSUMOTO N.Development of a compressor for a mniature pulse tube cryocooler of 2.5 W at 65 K for telecommunication applications[C]//Advances in Cryogenic Engineering,2008,53:1100-1107.
[6]王晓涛,朱建,陈帅,等.液氮温区高效紧凑制冷机运行特性研究[C]//第十一届全国低温工程大会,2013:71-74.
[7]MATSUMOTO N.Development of a compressor for a miniature pulse tube cryocooler of 2.5 W at 65 K for telecommunication applications[C]//Advances in Cryogenic Engineering:Transactions of the Cryogenic Engineering Conference-CEC,2008,53:712-719.
[8]JACOB S.Development of a moving magnetlinearmotor pressure wave generator for a pulse tube refrigerator[M]//Cryocoolers 16.New York:Plenum Press,2011:361-369.
[9]刘冬毓,吴亦农,王维扬,等.斯特林制冷机电动机固有频率的理论与实验研究[J].西安交通大学学报,2006,40(11):1320-1324.