基于网络控制的电力电子系统研究

基于网络控制的电力电子系统研究:Investigation on Power Electronic System Based on Networked Control
浙江大学电气工程学院 马皓 张尧 俞宏霞
摘要：为适应电力电子系统集成化的要求，提出了新的控制方法——网络控制，采用该方法不仅能有利于电力电子模块化，还能提高系统性能。本文以基于网络控制的单相逆变器无内联线并联系统为例，对该系统进行数学建模，建立以有功功率和无功功率为变量的网络控制方程，分析控制时延在该系统中的影响，并给出有关设计考虑。实验结果表明基于网络控制的单相逆变器无内联线并联系统与无网络控制的单相逆变器无内联线并联系统相比，有利于提高均流度。
ABSTRACT: With the development of integration for power electronic system, a novel control method named Networked Control is proposed. It may help to modularization of power electronics and can improve system performance.The single phase inverter parallel system without inter connection based on networked control system is taken as an example.Mathematical model and the networked control equation with the active and reactive power are derived. Through the analysis of effect on control time-delay in the system, a design method for networked control system of power electronics including time-delay is presented. Based on the experimental results, the performance of current distribution for the single phase inverter parallel system without inter connection based on networked control system can be improved.
关键词：网络控制； 逆变器并联；时延； 电流均分
Keywords: networked control; inverter parallel; time-delay; current distribution