飞机交流励磁变速恒频发电系统的建模与仿真

Modeling and Simulation of AC Excitated CFVS Aircraft Generator System

恒速恒频交流电源系统存在恒装结构复杂、能量转换效率较低等缺点,为此提出的飞机交流励磁变速恒频发电系统不仅去掉了结构复杂恒速传动装置,而且变速运行可以使发电系统运行在最优工况,提高了整个发电系统的效率。为了实现变速下能够输出恒频恒压的交流电,在介绍飞机交流励磁变速恒频发电机组成与工作原理的基础之上,建立了飞机发电系统数学模型。仿真结果表明:所建立的发电系统模型能正确的反映变速恒频发电系统的静、动态特性能;同时,建模方法对其它电机系统的建模具有参考价值。

Constant-Speed Constant-Frequency（CSCF） AC power system has some shortcomings,such as the complex structure of constant speed drive（CSD） and low efficiency of energy conversion.In this paper,the AC excitated Variable-Speed Constant-Frequency（VSCF） aircraft generator system can not only remove the complicated CSD,but also make the power generation system run in the best conditionthe under variable speed,which improves the efficiency of the whole power system.In order to output Constant-Frequency Constant Voltage（CFCV ） electric energy under variable speed,the paper analyzed the structures and principles of the aircraft AC excitated VSCF generation system,and established the simulation model of the aircraft power system with rotating-converter.The simulation results show that the model can reflect corrent static and dynamic characteristics of VSCF generation system. Meanwhile,the modeling method can also provide reference value for other motor.