交流励磁发电机的励磁稳态分析

Excitation steady performance of AC excited generators

着重于分析交流励磁发电机系统的交流励磁侧电网的稳态工况。首先从三相坐标系下的数学模型出发对转子侧整流变压器原边相电流及线电流进行计算分析，并给出相应的傅立叶分析结果。其次，分析电网侧的电流谐波频率。最后分析发电机无功调节对交流励磁侧电网的影响。研究结果表明，虽然交流励磁发电机具有优于同步发电机的性能，但是它对其交流励磁供电电网所产生的谐波会造成一定的危害，降低了供电电网的品质。

In the paper, we aimed at the steady state mode of AC exciting power network of AC exciting generators. The primary phase current and line to line current in the rotor's rectifier were calculated based on the mathematic model in three phase coordinate system. The frequency spectrum analysis was given. The harmonic frequencies of current in the AC exciting power network were analyzed. The effect of reactive power in stator on the power network of AC exciting was also analyzed. The results reveal that although AC exciting generator has better performance than synchronous generator, the more damage is produced in its AC exciting network and therefore the quality of the power supply network is decreased.