基于Matlab的大型同步电动机起动方式优化

Starting Mode Optimization of Large Synchronous Motor Based on Matlab

针对同步电动机的起动问题,分析了C1202二次压缩机的自耦变压器降压起动原理,根据同步电动机的工作原理对同步电动机的起动特性进行了分析,并对全压异步起动方法进行了仿真研究,得出了起动过程中电动机相电流、电磁转矩等参数的变化曲线。利用Matlab/Simulink构建了转速开环恒压频比控制同步电动机软起动的数学模型,对同步电动机的起动过程进行仿真试验,并且分别对空载起动和负载起动过程进行了分析。仿真结果验证了转速开环控制同步电动机软起动的可行性。

Although synchronous motors have many advantages,its biggest drawback is difficult to start.According to the star-tup problem of synchronous motor, the starting characteristics of synchronous motor is given in accordance with its work princi-ple.The curve of motor phase current and electromagnetic torque during the start-up is obtained stemming from the simulation research on asynchronous motor starting methods.The synchronous motor starting simulation is processed based on the Matlab/Simulink after building the mathematic model of open-loop constant voltage frequency ratio soft-start control,which analyzes both no load start-up and load on start-up process.The simulation results show the feasibility of constant voltage frequency ra-tio soft-start control method.