CAJ | 학술논문

分析了可恢复式反时限保护和恒流限流保护的原理，推导了基于真空环境下电缆温度升高模型的反时限保护方程，并用Matlab软件仿真分析了反时限保护过程中母线电压的瞬态跌落过程。针对恒流限流保护，设计了一种改进电路。Saber软件仿真表明，该电路可将电流超调量限制在20％以内。对多种过流保护手段的优缺点进行了总结，提出了一种包含反时限保护和基于MOSFET特性的恒流限流保护的航天器可恢复式过流保护系统框图。
분석료가회복식반시한보호화항류한류보호적원리，추도료기우진공배경하전람온도승고모형적반시한보호방정，병용Matlab연건방진분석료반시한보호과정중모선전압적순태질락과정。침대항류한류보호，설계료일충개진전로。Saber연건방진표명，해전로가장전류초조량한제재20％이내。대다충과류보호수단적우결점진행료총결，제출료일충포함반시한보호화기우MOSFET특성적항류한류보호적항천기가회복식과류보호계통광도。
The recoverable over current prevention methods are discussed including inverse-time prevention and current-limiting prevention. Inverse time prevention equation based on tempera- ture rising model of wire in vacuum is derived, and the transient drop of bus voltage during prevention is simulated with Matlab. A current-limiting circuit is designed and verified by simulation with Saber which shows that the overshot of current is limited to 20 percent. The differences among several prevention measures are concluded and a conception of spacecraft recoverable over- current prevention system which consists of inverse-time prevention and current-limiting prevention based on the characteristic of MOSFET is proposed.