航空三级式直流发电系统瞬变电压抑制技术研究

Research on Transient Voltage Suppression of Aviation Three-stage DC Power Generation System

三级式无刷发电系统是当前多电飞机等航空飞行器的主流电源系统,发电系统通常需要在大倍数功率过载和空载状态进行切换,而在航空电源标准中对瞬变电压峰值和恢复时间都有严格要求,随着功率密度和转速指标不断提高,发电系统交流频率和电机绕组感性成分逐渐增大,负载切换下瞬变电压抑制成为关键难题。本文研究了高压三级式直流发电系统瞬变电压的产生机理和多种抑制方法,通过仿真和理论分析了抑制手段及效果,进行了多种方法的优劣性综合对比,能够为新一代高速大功率航空三级式发电系统设计和可靠应用提供参考。

The three-stage brushless power generation system is the mainstream power supply system for current aircraft such as more electric aircraft.The power generation system usually needs to switch between large multiple power overload and no-load states.In the aviation power supply standard,there are strict requirements for transient voltage peak and recovery time.With the continuous improvement of power density and speed indicators,the AC frequency of the power generation system and the inductive component of the motor winding gradually increase,and transient voltage suppression under load switching becomes a key problem.This paper studies the generation mechanism and various suppression methods of transient voltage in high-voltage three-stage DC power generation systems.Through simulation and theoretical analysis,the suppression means and effects are analyzed,and the advantages and disadvantages of various means are comprehensively compared,which can provide a reference for the design and reliable application of a new generation of high-speed and high-power aviation three-stage power generation systems.