离子推力器栅极放电分析和保护设计

离子推力器的栅极结构复杂、电压高,两栅之间容易发生放电,给离子电推进正常工作带来影响,文章提出推力器加工工艺和过程污染物是产生放电的主要原因。分析国内外离子电推进系统放电现象,建议采用放电保护设计,以有效保护电推进系统及卫星的正常工作。文章以电源处理单元为主,给出了针对离子推力器栅极放电的保护设计和系统控制保护措施。

Analysis and Protection Design of Grid Discharge for Ion Electric Thruster

Ion electric propulsion has high specific impulse, so is extensively used on geostationary orbit satellite. Because of its grid structure feature and high voltage, discharge easily occurs between the two grids and influences the system normal work. This paper analyses the main factors of ion electric propulsion grid discharge which cause the process contamination, as well as the electric propulsion discharge of domestic and overseas, and shows that the system would normal work by using discharge protection. It gives a important of PPU discharge protect design and system control protection method from ion electric thruster grid discharge.