霍尔推力器等离子体放电振荡影响能量转换的机制研究

项目名称： 霍尔推力器等离子体放电振荡影响能量转换的机制研究

项目编号： No.51477035

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 电工技术

项目作者： 魏立秋

作者单位： 哈尔滨工业大学

项目金额： 90万元

中文摘要： 霍尔推力器是利用电场和磁场共同作用将电能转换为工质动能的一种能量转换装置，提高霍尔推力器的能量转换效率能够有效提高卫星平台有效载荷，提高系统可靠性，是霍尔推力器研究的核心问题之一 本项目从霍尔推力器广泛存在的等离子体放电振荡现象出发，研究等离子体放电振荡及 其耦合特性对工质电离、离子加速、电子输运过程的影响，明确等离子体放电的动态特性对能量转换的影响规律，给出霍尔推力器等离子体放电振荡影响能量转换过程的物理机制，为霍尔推力器的性能提升提供新的视角和指导原则。

中文关键词： 霍尔推力器；等离子体放电；能量转换

英文摘要： A Hall thruster is a kind of energy conversion devices which uses crossed electric and magnetic fields to convert the electric energy into kinetic energy of propellants. Because high energy conversion efficiency can effectively improve the payload of the satellite platform and system reliability, the improvement of energy conversion efficiency is one of core issues in the research of Hall thrusters Oscillations of discharge plasma in Hall thrusters is widely exist. From this point, the effects of plasma discharge oscillations and their coupling characteristics on the propellant ionization, ion acceleration, the dynamic process of the electron motion is studied in this project. The influence regularity of discharge plasma dynamic characteristics and energy conversion is investigated and the physical mechanism of plasma discharge oscillations influencing the energy conversion process is clarified. The results of this research work would provide a new perspective and guiding principles for the Hall thruster performance optimization.

英文关键词： Hall thruster;Plasma discharge;Energy conversion