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本文以船舶柴油发电机组为例，针对三相交流发电机组做了较为深入的分析并建立起数学模型。在数学模型的基础上，利用MATLAB/Simulink平台搭建其仿真模型，并利用模拟负载针对所建立的仿真模型进行了仿真验证，分析了船舶同步发电机组在负荷变化时的电压、电流等状态参数的相关特性。“,”Taking marine diesel-engine generator set for example, this article analyzes the three-phase AC generator set and establishes the mathematical model. A simulation model has been built on the basis of mathematical model by using the tools of MATLAB/Simulink. The simulation model is tested by using simulated load. The state parameters such as voltage, current and other related features of the generator set are analyzed when the load changes.