基于同步发电机模型的微网逆变器控制仿真研究  

Simulation research on micro-grid inverter control based on synchronous generator model

作　　者：付柳[1] 王莉[1] 余璞[1] 

机构地区：[1]西南交通大学磁浮技术与磁浮列车教育部重点实验室

出　　处：《电力科学与技术学报》2015年第3期46-52,共7页Journal of Electric Power Science And Technology

摘　　要：以配备储能装置的微网逆变器为研究对象,借鉴同步发电机机组调速及励磁控制原理,设计微网逆变器控制器,将逆变器整定为虚拟同步发电机(VSG),使其具备功率控制和调压调频的功能。为了能模拟同步发电机的电磁暂态过程,在功率控制环路中添加功率微分补偿环节和励磁电流控制环节,减小负载突变或者模式切换造成的电流冲击。设计VSG在离网、并网以及模式切换时的控制方案,搭建1台10kW的VSG机仿真模型,并验证了控制策略的正确性。The micro-grid inverter equipped with energy storage device was researched in this paper.According to the speed regulation and excitation control theory of synchronous generator,the controller of micro-grid inverter was designed.The micro-grid inverter was turned into a virtual synchronous generator（VSG）,which had the ability of power control and the function of frequency modulation and voltage regulation.In order to fully reflect the electromagnetic transient process of synchronous generator,the power differential compensation and excitation current control units were added to reduce the impacts of current caused by the load mutation or mode switching.The control schemes of the virtual synchronous generator islanding,connecting to the grid and mode switching were also designed.A 10kV·A virtual synchronous machine simulation model was set up to verify the validity of the control strategy.

关 键 词：逆变器 虚拟同步机 微网 调速 励磁调节 

分 类 号：TM464[电气工程—电器]