中文摘要：

同步发电机整流系统的时域数学模型和瞬态特性对分析电力系统在扰动下的瞬态电磁响应有重要意义。以模式分类为基础，提出一种整流器统一数学模型，适用于整流器的各种工作模式。通过与实测数据对比证明该模型和计算方法的正确性。将整流器统一模型和同步发电机、负载的模型一起构成了同步发电机整流系统的时域模型，编制程序模拟系统的两种瞬态电磁特性。所得结果可用于进一步研究小型独立电力系统的数学模型和瞬态电磁特性。

英文摘要：

The mathematical model of the synchronous generator-rectifier system in time domain and its transient performance are of great importance to analyzing transient electromagnetic response of disturbed power systems. A unified mathematical model of rectifier based on classification of modes was proposed in the paper which can be used in all the operational modes of a rectifier. The unified mathematical model of rectifier and the calculation method were proved to be correct by contrast with the measured data. Moreover, the unified model of rectifier, the models of synchronous generator and load were connected to form the time domain mathematical model of the synchronous generator-rectifier system. Two kinds of transient electromagnetic performance of the system were simulated by the calculation program based on the proposed models and methodology. The results in the paper can be used to study the model and transient electromagnetic performance of miniature independent power systems.