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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 AC power supply system has the constant installation structure is complicated, the energy conversion efficiency is low and other shortcomings. To this end, the proposed AC excitation variable speed constant frequency power generation system not only eliminates the complex structure of constant speed transmission, and variable speed operation can make the power generation system Operating in the best conditions, improve the efficiency of the entire power generation system. In order to achieve AC output constant voltage and constant voltage under variable speed, the mathematical model of aircraft power generation system is established on the basis of introducing the composition and working principle of AC excitation variable speed constant frequency generator. The simulation results show that the established power generation system model can correctly reflect the static and dynamic characteristics of VSCF power generation system. Meanwhile, the modeling method has reference value for the modeling of other motor systems.