电网技术2017，Vol.41Issue(4)：1291-1299,9.DOI:10.13335/j.1000-3673.pst.2016.1790
基于三相四桥臂逆变器的虚拟同步发电机分序控制策略
Sequence Decomposition Control Strategy for Virtual Synchronous Generator Based on Three-Phase Four-Leg Inverter
张鸿博 1蔡晓峰 2杨向真3
作者信息
- 1. 华北水利水电大学电力学院, 河南省郑州市450045
- 2. 河南工程学院机械工程学院,河南省新郑市451191
- 3. 教育部光伏系统工程研究中心(合肥工业大学),安徽省合肥市230009
- 折叠
摘要
Abstract
Common control strategy of virtual synchronous generator is analyzed,and its implicit constraint of positive sequence impedance equal to negative sequence and zero sequence impedance is pointed out.Then its shortcomings under three phase unbalance are analyzed.Combined with positive,negative and zero sequence networks of synchronous generator,control strategy of virtual synchronous generator based on sequence networks is presented,and implementations for sequence network model based on three-phase four-leg inverter is designed.Virtual impedance design principle for parallel multiple inverters is analyzed.Simulation results verify correctness of implementation for the sequence network model and advantages of sequence network model in terms of improving three-phase inverter output voltage unbalance factor of microgrid inverter.It also verifies correctness of the virtual impedance design principle for parallel multiple inverters.Advantages of the sequence network model in three-phase unbalanced operation are confirmed with simulation.关键词
微电网/虚拟同步发电机/不对称/负序/零序Key words
microgrid/virtual synchronous generator/unbalance/negative sequence/zero sequence分类
信息技术与安全科学引用本文复制引用
张鸿博,蔡晓峰,杨向真..基于三相四桥臂逆变器的虚拟同步发电机分序控制策略[J].电网技术,2017,41(4):1291-1299,9.
