放电回路电感补偿对发动机回路振荡影响  

Influence of the Inductance Compensation of Discharge Circuit on the Circuit Oscillation of Thruster

作　　者：张雯[1] 李战元 陈升泽[1] 尹世明[1] 

机构地区：[1]中国运载火箭技术研究院,北京100076 [2]中国人民大学附属中学,北京100076

出　　处：《价值工程》2015年第4期30-32,共3页Value Engineering

摘　　要：在稳态等离子发动机（Stationary Plasma Thruster，简称SPT）工作过程中存在频率范围为1-100kHz的低频振荡，振荡幅值较大，对strr性能有明显的不良影响，强的低频振荡甚至会导致发动机熄火，因此减轻放电振荡坏的影响是很有必要的。本文仅针对最简单的滤波器——电感滤波器，通过实验与仿真研究发现了电感补偿对振荡影响的规律：随着电感增大电流振荡降低而电压振荡增加，且电流振荡变化存在一个60～90mH的突变区间，又观察了振荡与相位差和频率的关系，随着电感增大振荡频率降低而电流与电压的相位差增大。以上规律在以往的参考文献中从来没有详细阐述过。There is low frequency oscillation with frequency range of 1-100 kHz in the working process of stationary plasma thruster （SPT）, the oscillation amplitude is big and it is bad for the performance of SPT. The strong low frequency oscillation even generates flameout of the thruster. So, it is necessary to reduce the bad influence of discharge oscillation. Aimed at inductor filter which is the easiest filter, through the experiments and simulation researches, this paper finds the influence rule of the inductance compensation on the oscillation： the voltage oscillation increases with the increase of inductance and decrease of current oscillations, and there is a mutation area of 60～90mH in the current oscillation changes. This paper also observes the relationships between oscillation and phase difference, the phase difference of current and voltage increases with the increase of inductance and the decrease of oscillation frequency. The above rules have never expounded in detail in the past references.

关 键 词：等离子发动机 低频振荡 放电回路 实验研究 仿真 

分 类 号：U263.13[机械工程—车辆工程]