摘要
航空静止变流器实现机载直流电到交流电的转换,是航空电源系统的重要组成部分。本文从拓扑和控制等方面回顾了近年的研究历程,讨论了提高航空静止变流器的功率密度、效率、输入/输出性能等的关键技术。分析了航空静止变流器的适用拓扑,采用反向恢复损耗问题小的拓扑、并采用交错移相控制技术等,可提高滤波器的等效开关频率,减轻被动元器件的重量。在DC-DC变换器的电压环中增加陷波滤波器,在DC-AC逆变器的电压环中增加谐振控制器,显著改变了特定频率处的变换器输出阻抗,解决了单相航空静止变流器的输入端的低频电流纹波问题,显著提升了航空静止变流器的输出电压调整率。在提高基础模块性能的基础上,研究了具有抗干扰能力强的组合控制技术,为航空静止变流器的标准化奠定了基础。
Aeronautic static inverters （ASIs） convert the DC bus voltage to constant frequency AC volt- age, which is an important part of the aircraft power system. Research progress in recent years from the aspects of topologies and control techniques is reviewed. The key techniques to improve the ASI＇s power density, efficiency, input/output performance are highlighted. The topologies with small reverse recov- ery losses and the interleaving phase-shift control technology can increase the equivalent operating fre- quency of the filters and reduce the weight of passive components. By introducing a notch filter into the voltage loop of DC-DC converter, the output impedance at twice line frequency is significantly increased and the low-frequency current ripple in the input of the single-phase ASIs can be reduced. By introducing a resonant controller into the voltage loop of DC-AC converter, the output voltage regulation of ASI can be significantly improved. On the basis of improving the performance of basic module, the combination control technology of strong anti-interference ability is researched, which has laid the foundation for the standardization of ASI.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2014年第1期19-26,共8页
Journal of Nanjing University of Aeronautics & Astronautics
基金
国家自然科学基金(51007039)资助项目
关键词
航空静止变流器
低频纹波
谐振控制器
模块化
双BUCK逆变器
aeronautic static inverter
low-frequency ripple
resonant controller
modularization
dual- buck inverter
