广东电力2017，Vol.30Issue(12)：38-42,5.DOI:10.3969/j.issn.1007-290X.2017.012.006
改进型虚拟同步发电机控制策略
Control Strategy for Improved Virtual Synchronous Generator
摘要
Abstract
Rotational inertia of control strategy of traditional virtual synchronous generator (VSG) is constant in the ontology model,which may produce power oscillation and deviation of the grid-connected inverter as it approaches to a steady state.Therefore,the paper presents a kind of improved control strategy for VSG.This strategy adopts band-pass damping factor to replace constant damping factor in the traditional ontology model,which makes the grid-connected inverter rapidly get into a steady state when deviation of the power grid frequency and rotational frequency is small.Compared with traditional constant damping factor,band-pass damping factor can not only suppress power oscillation but also have no effect on output active power of VSG.Based on MATLAB/Simulink,the paper verifies this control strategy and the result indicates the strategy is in normal performance under off-grid mode or grid-connection mode,which shows it can meet requirement of electric power quality.关键词
虚拟同步发电机/并网逆变器/带通阻尼系数/常数阻尼系数/功率振荡Key words
virtual synchronous generator/grid-connected inverter/band-pass damping factor/constant damping factor/power oscillation分类
信息技术与安全科学引用本文复制引用
王超,武健,魏家昊,徐殿国..改进型虚拟同步发电机控制策略[J].广东电力,2017,30(12):38-42,5.基金项目
国家自然科学基金项目(51407043) （51407043）
