基于极性转换的航空交直流共地整流电源  

Aircraft rectifier with common ground of AC and DC power based on polarity conversion

作　　者：刘海春[1] 李阳 谢少军[1] Haichun LIU;Yang LI;Shaojun XIE(College of Automation,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;AVIC Jincheng Nanjing Engineering Institute of Aircraft System,Nanjing 211106,China)

机构地区：[1]南京航空航天大学自动化学院,南京210016 [2]航空工业金城南京机电液压工程研究中心,南京211106

出　　处：《航空学报》2024年第13期356-365,共10页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(52277183)。

摘　　要：在航空交直流共地混合供电系统中,对飞机交流发电机产生的三相交流电进行整流可得到高压直流电。针对目前航空领域中常用的多脉冲变压整流器(TRU)和高频隔离整流器存在功率密度较低和可靠性较差等问题,提出了一种非隔离型整流器方案,该方案由非隔离的自耦多脉冲整流器和非隔离型双极-单极直流变换器构成。分析了新型整流方案的结构特点,提出了一种非隔离型双极-单极转换软开关直流变换器拓扑及协同控制策略。通过仿真和实验验证了该变换器可实现高功率因数整流,且具有良好的输出特性。相比于现有的航空大功率整流器,该变换器具有更高的工作可靠性和功率密度。The high voltage DC power supply is obtained by rectifying the three-phase AC power supplied by the aircraft generator in the common ground aircraft AC/DC hybrid system.Considering the low power density and reliability of the generally used multi-pulse Transformer-Rectifier-Unit(TRU)and the rectifier with high frequency galvanic isolation,a non-isolated rectifier scheme is proposed.The proposed rectifier is composed of a non-isolated Auto TRU(ATRU)and a non-isolated bipolar-unipolar DC/DC converter.Based on an analysis of the topology characteristics of the novel rectifier,a non-isolated bipolar-unipolar soft-switching DC/DC converter topology and the cooperative control strategy are proposed.The high power factor input and stable DC output of the converter are validated by simulation and experimental results.Compared with other high power aviation rectifiers,the presented one can improve the reliability and power density obviously.

关 键 词：航空电源 整流器 非隔离型变换器 单双极性转换 协同控制策略 

分 类 号：V242.2[航空宇航科学与技术—飞行器设计]