基于Dymola及Modelica语言的飞机三级发电机的建模与仿真

Modeling and Simulation of Aircraft's Three-stage Synchronous Generator Based on Dymola and Modelica Language

飞机发电系统为机载用电设备正常工作提供条件,现今,飞机发电系统多采用三级式无刷交流同步发电机,由主发电机,交流励磁机和永磁发电机组成。为了飞机三级发电机仿真模型的建立,本文在介绍了同步发电机的结构和数学方程的基础上,在适用于各种物理系统建模的Dymola软件平台中对三级同步发电机进行建模,并结合调压器及相关电气负载得到三级发电机的部分动态仿真结果,仿真结果能够很好地显示三级发电机对不同负载的响应,与理论结果一致,证明了模型的正确性,为飞机电源系统的设计提供了参考。

For airborne electric equipment,aircraft power systems can provide good conditions to work.Now,Aircraft AC power system always adopts three-stage type AC synchronous generator which is made up by the main generator,the AC exciter and the permanent magnet generator. In order to simulate the aircraft＇s three-stage generator, the paper introduced the mechanical structure of synchronous generators and mathematical equations. Then the three-stage synchronous generator was modeled in Dymola software which can be applied in a variety of physical systems. combining with the voltage regulator and electrical load,got part of results of the dynamic simulation about three-stage generators. The simulation results can well show different load responses,and in agreement with theoretical results,so it can prove the correctness of the model. And this model also provides an effective reference for the design of aircraft power supply system.