励磁电流负反馈对双凸极电机调压性能的影响

The Impact of the Field Current on Voltage Regulator of DSEMG

电励磁双凸极发电机(Doubly Salient Electro-magnetic Generator,简称DSEMG)具有结构简单、可靠性高、控制方便等特点,可通过调节励磁电流的大小来维持输出电压恒定。传统调压器由于仅引入输出电压负反馈,稳态性能往往难以满足要求。简单介绍了DSEMG的发电原理,提出在传统调压器的基础上再引入励磁电流负反馈,通过Simulink仿真和实验验证,与传统调压方式的结果相比较,说明该调压方式有较高的调压精度,适合于DSEMG。

The doubly salient electro-magnetic generator（DSEMG） has simple structure,very high reliability and is easy to control.The output voltage can be steady by adjusting the field current.The traditional voltage regulator just uses output voltage negative feedback which causes largely steady regulation error.This paper firstly introduces the principle of DSEMS,then provides a new method to improve the ripple of the output voltage.The field current negative feedback is added to the traditional voltage regulator in the new method.The simulation and experimental waveforms are given,the results show that the new method is super to the traditional voltage regulator,which is able to meet steady performance of requirements.Therefore the new method is especially fit for the DSEMG.