同步发电机新型叠加强励励磁回路二极管故障和电容并联作用分析

针对同步发电机新型叠加强励励磁系统的可行性,重点研究了新型叠加强励叠加回路的二极管故障以及并联电容对波形的影响。Matlab仿真结果表明,二极管故障对励磁系统会造成很大影响,尤其是主回路并联二极管出现短路故障时,强励叠加将导致失败,必须给予重视。同时,经过整流后的电流在并联一个电容进行处理时,并不能对转子电流波形产生平波作用,因此在工程上不需要这种平波方式。

Analysis of diode breakdown of strong excitation circuit of synchronous generator new type superposition strong excitation system and the function of shunt capacitance

In order to study the feasibility of synchronous generator new superposition strong excitation system of the self-shunt excitation system, this essay focus on the diode breakdown of the new type superposition strong excitation circuit, and shunt capacitance effects of the waveform. Through the matlab simulation show that the influence of diode breakdown in strong excitation circuit on the excitation system is very bad, especially when the main circuit diode takes place short-circuit fault, superposition strong excitation will be failure, so we must pay attention to it. And the rectified current flowing through a shunt capacitor has no apparent effect on the function of smoothing waveform. So on the engineering and theory, this kind of smoothing waveform method is not used.