基于无源半桥辅助电路的24脉航空变压整流器  

24-Pulse Aviation Transformer Rectifier Based on Passive Half-Bridge Auxiliary Circuit

作　　者：史艳博 葛红娟[1] 胡寅逍 朱佳祺 Shi Yanbo;Ge Hongjuan;Hu Yinxiao;Zhu Jiaqi(College of Civil Aviation Nanjing University of Aeronautics and Astronautics,Nanjing 211106 China;College of Automation Engineering Nanjing University of Aeronautics and Astronautics,Nanjing 211106 China)

机构地区：[1]南京航空航天大学民航学院,南京211106 [2]南京航空航天大学自动化学院,南京211106

出　　处：《电工技术学报》2022年第S01期257-266,共10页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(U1933115)。

摘　　要：为将变压整流器谐波能量再次利用提高能量转换效率和提高输入电流谐波含量和输出电压纹波含量抑制性能,该文提出一个应用在直流侧的无源高可靠性半桥辅助电路。辅助电路输出端与负载并联连接,将谐波能量再次利用转换为直流反馈至负载两端,产生一个具有15°相移的附加电压,负载电压由24个相位相差15°的电压矢量合成,形成24脉波直流输出。辅助电路迫使两组三相整流桥三种模态运行:并联运行和分别独立运行,对变压整流器输入电流进行调制,形成24个阶梯波,抑制输入电流谐波含量。对提出的24脉变压整流器电路结构、谐波抑制机制和工作模态进行分析。所提出的24脉波变压整流器结构简单,不需要同步控制信号,鲁棒性和实用性好,提高了能量的转换效率,输入电流具有良好的正弦性,可以直接满足航空航天谐波标准。A passive half-bridge auxiliary circuit with high reliability is applied on the DC side which improve the harmonic and ripple suppression performance and energy conversion efficiency in this paper.Connected in parallel with the load,the auxiliary circuit feedbacks harmonic power to the DC bus and produces an additional voltage with a 15°phase shift,forming 24 pulses of load voltage.The auxiliary circuit forces the two sets of three-phase diode-bridge rectifiers(Rec I and Rec II)to operate in mixed modes:parallel operation,Rec I separate operation and Rec II separate operation,for suppressing the input line current harmonic content.Analyzing the harmonic suppression mechanism and configuration,the key techniques and operation mode of the proposed 24-pulse transformer rectifier(TRU)are also demonstrated.With robustness,practicability and simple circuit configuration,the proposed 24-pulse TRU draws near sinusoidal input current from the utility and needs no synchronous control signal.

关 键 词：24 脉波 无源 半桥辅助电路 谐波抑制 能量转换效率 

分 类 号：TM461.5[电气工程—电器]