微型燃气轮机发电系统建模与特性分析

Modeling of Microturbine Generation System and Its Characteristics Analysis

基于微型燃气轮机与电力电子装置工作原理,对采用双脉宽调制(PWM)变换器结构的微型燃气轮机发电系统进行了整体建模。为控制交直流变换器中电容电压,整流器采用PWM恒压控制;为保证负荷侧电能质量,逆变器采用V/F控制,实现负荷侧电压与频率的稳定。利用PSCAD/EMTDC软件对微型燃气轮机发电系统动态特性进行仿真验证,结果表明该模型能够反映实际微型燃气轮机发电系统的动态特性。

Based on the working principle of microturbine and its power electronic converter,an overall model of microturbine generation system with dual PWM converter is established.In order to maintain the capacitive voltage of AC/DC converter,a constant voltage control method is used for the rectifier.And in order to ensure the power quality of load side,V/F control is used for the inverter to realize the stability of voltage and frequency.PSCAD/EMTDC software is also used to simulate and verify the dynamic characteristics of microturbine generation system.The results show that the actual dynamic characteristics of microturbine generation system can be reflected by the model.