电工技术学报2012，Vol.27Issue(1)：17-23,7.
基于微分几何的微网Z源逆变器并网控制
Research on the Z-Source Inverter Grid-Connected Control of Micro-Grid System Based on Differential Geometry
摘要
Abstract
For the Z-source inverter used in the distributed generation system and its grid-connected control,the paper takes the photovoltaic system as the example.According to the nonlinear characteristic of Z-source inverter,the affine model of Z-source inverter DC-link and AC side are created.Based on the differential geometry,the proper coordinate transformation and pre-feedback are constructed,and the original nonlinear system is exact linearized,then designed linear optimal controller for the system.The inverter integrates three functions including maximum power point tracking（MPPT）,step-up/down DC-side voltage and output grid-connected.The simulation and experiment are performed to validate the strategies： when input condition of the photovoltaic array changes,this method has better performance than PI control.关键词
微网/微分几何/Z源逆变器/并网/光伏系统Key words
Micro-grid/differential geometry/Z-source inverter/grid-connected/photovoltaic分类
信息技术与安全科学引用本文复制引用
陈艳,周林,雷建,甘元兴..基于微分几何的微网Z源逆变器并网控制[J].电工技术学报,2012,27(1):17-23,7.基金项目
输配电装备及系统安全与新技术国家重点实验室自主研究项目 （）
中央高校基本科研业务费资助项目 （）
