LIPS-300离子推力器环形会切磁场等效磁路分析研究
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摘要
针对多种工作模式下推力器放电室磁路设计的复杂性问题,为实现电磁体磁场向永磁体磁场的磁路转换,利用磁路等效法,建立离子推力器磁路系统的等效磁路模型。在此基础上,结合有限元理论,分析获得产生与电磁体磁场的磁路构型相同的永磁体结构尺寸,将离子推力器放电室在永磁体磁场状态与电磁体磁场状态下的磁感应强度进行对比。结果表明:磁路转换后关键点磁感应强度相对误差低于5%,且永磁体样机工作放电损耗为141.8W/A,阳极震荡电压为10V,符合磁路转换要求和磁场设计目标,验证了等效磁路模型分析结果的正确性及方法的可行性。
Aiming at the complexity of the thruster discharge chamber design in variety of operation modes,by using the equivalent magnetic circuit method,the magnetic circuit model of the ion thruster magnetic field system is established to achieve the conversion between the electromagnet and permanent magnet. Based on this model,and combined with the finite element method,the physical dimension of the permanent magnet which has the same effect with the electromagnet is obtained. And the ion thruster chambers under the two above states are compared. Results showed that after magnetic circuit conversion the relative error of magnetic induction intensity in key points is less than 5%. In addition,the discharge loss of 141.8 W/A,and anode shock voltage of 10 V in permanent magnet structure meets the requirements of magnetic circuit conversion and the targets of magnetic field design,which shows the effective of the equivalent magnetic circuit model and the feasible of the method are verified.
Aiming at the complexity of the thruster discharge chamber design in variety of operation modes,by using the equivalent magnetic circuit method,the magnetic circuit model of the ion thruster magnetic field system is established to achieve the conversion between the electromagnet and permanent magnet. Based on this model,and combined with the finite element method,the physical dimension of the permanent magnet which has the same effect with the electromagnet is obtained. And the ion thruster chambers under the two above states are compared. Results showed that after magnetic circuit conversion the relative error of magnetic induction intensity in key points is less than 5%. In addition,the discharge loss of 141.8 W/A,and anode shock voltage of 10 V in permanent magnet structure meets the requirements of magnetic circuit conversion and the targets of magnetic field design,which shows the effective of the equivalent magnetic circuit model and the feasible of the method are verified.
引文
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[16]孙雨施.直流磁系统的计算与分析[M].北京:国防工业出版社,1987.
[2]杨福全,万耿民,唐福军,等.电推力器气路高电压绝缘技术研究[J].真空科学与技术学报,2014,34(12):1290-1293.
[3]张天平,田华兵,孙运奎.离子推进系统用于GEO卫星南北位保使命的能力与效益[J].真空与低温,2010,16(2):72-77.
[4]胡竟,江豪成,王亮,等.阴极挡板对30cm氙离子推力器性能影响的研究[J].真空与低温,2015,21(2):103-106.
[5]陈娟娟,张天平,刘明正,等.LIPS-200离子推力器放电室原初电子动力学行为的数值模拟研究[J].推进技术,2015,36(1):155-160.(CHEN Juan-juan,ZHANG Tian-ping,LIU Ming-zheng,et al.Investigation on Dynamical Behavior of Primary Electrons in LIPS-200 Ion Thruster Discharge Chamber[J].Journal of Propulsion Technology,2015,36(1):155-160.)
[6]孙明明,张天平,陈娟娟,等.LIPS-200环型会切磁场离子推力器热模型计算分析[J].推进技术,2015,36(8):1274-1280.(SUN Ming-ming,ZHANG Tianping,CHEN Juan-juan,et al.Thermal Model of LIPS—200 Ring-Cusp Magnet Field Ion Thruster[J].Journal of Propulsion Technology,2015,36(8):1274-1280.)
[7]J Gonzalez Del Amo.European Space Agency(ESA)Electric Propulsion Activities[R].IEPC 2015-02.
[8]William G T,Kuei R C,Ezequiel S,et al.Performance Evaluation of the XIPS 25cm Thruster for Application to NASA Discovery Missions[R].AIAA 2006-4666.
[9]Polk J E,Kakuda R Y,Anderson J R,et al.Performance of the NSTAR Ion Propulsion System on the Deep Space One Mission[R].AIAA 2001-0965.
[10]Daniel A H,Alec D G.Discharge Chamber Plasma Structure of a 30cm NSTAR-Type Ion Engine[R].AIAA 2004-3794.
[11]Scott W B,Michael J P.Development Status of NEXT:NASA’S Evolutionary Xenon Thruster[R].IEPC 2003-0288.
[12]Michael J P,Scott W B.NEXT Ion Propulsion System Development Status and Performance[R].AIAA 2007-5199.
[13]Dan M G,Richard E W,Ira K.Analytical Ion Thruster Discharge Performance Model[R].AIAA 2006-4486.
[14]Richard W,Dan G.Effects of Magnetic Field Topography on Ion Thruster Discharge Performance[J].Plasma Sources Science and Technology,2008,17.
[15]Daniel A H,Alec D G.Discharge Chamber Plasma Potential Mapping of a 40cm NEXT-Type Ion Engine[R].AIAA 2005-4251.
[16]孙雨施.直流磁系统的计算与分析[M].北京:国防工业出版社,1987.