摘要
航空电力作动器是未来多电飞机电网的重要负载,具有功率大范围快速变化的用电特性,被称为动态负载。为获得好的用电性能,本论文研究了适用于电力作动器的PWM整流控制技术,提出了一种最大功率输出的控制方法。该控制方案解决了负载电流大范围变化时,整流器输出电压动态压降较大,甚至不稳定的问题。论文分析了航空电力作动器的负载特性及其对供电电源的影响,论述了基于最大功率输出控制的三相PWM整流器的设计思想和系统结构。通过仿真,将提出的最大功率控制方案与传统的双闭环PI控制器的控制效果进行了比较。并用一台10kW电力作动器样机作为负载进行了实验验证。仿真和实验结果表明,这种控制器可在一定程度上提高整流器的输出功率,对大范围变化的动态负载有更好的控制性能。
The aircraft electric actuator is one of the most important loads of the future more electric aircraft power grid.And it features with the load characteristics of wide-range rapid varying.In this paper,a maximum power control method for the three-phase voltage source PWM rectifier is presented.The proposed control method aims to solve the problem of big output voltage dip and instability when the load current varying rapidly.The maximum power control method and its structure are presented.The characters of an aircraft electric actuator and the affect for supply source are analyzed.The proposed control method is validated by simulation.The simulation responses of the classical linear PI scheme are included for comparative study.Experiments are also done on a 10kW prototype.Simulation results and experimental results show improved performance and big capacity of the new scheme in the voltage regulating of a VSR with wide-range dynamic loads.
出处
《电工技术学报》
EI
CSCD
北大核心
2011年第8期91-98,共8页
Transactions of China Electrotechnical Society
基金
国家自然科学基金资助项目(50677001)
