电网技术2018，Vol.42Issue(2)：607-613,7.DOI:10.13335/j.1000-3673.pst.2017.1140
基于T型三电平变流器的超导磁储能系统及其能量成型控制策略
Three-Level T-Type Converter for Superconducting Magnetic Energy Storage System and Its Energy-Shaping Control Strategy
林晓冬 1雷勇1
作者信息
- 1. 四川大学电气信息学院,四川省成都市610065
- 折叠
摘要
Abstract
Three-level T-type converter (3LT2C) combines advantages of two-level converter and conventional three-level converter.It can improve output performance and operation efficiency of the system and reduce voltage stress and conduction loss of power switches.As a new type of energy storage device,superconducting magnetic energy storage (SMES) system has broad application prospects in power grids because of its high power density.In this paper,mathematic models and port-controlled Hamiltonian (PCH) models of SMES based on 3LT2C are established.Through analysis of SMES passivity proof,energy-shaping control strategy based on feedback interconnection structure is designed to eliminate nonlinear effect.Finally,simulation results show that the proposed topology and control strategy can reduce total harmonic distortion and improve SMES power tracking capability.Its application in wind power generation system also shows that the proposed SMES can effectively stabilize wind power fluctuations and achieve an efficient grid connection of wind farms.关键词
T型三电平变流器/超导磁储能系统/端口受控哈密尔顿/能量成型控制Key words
three-level T-type converter/SMES/port-controlled Hamiltonian/energy-shaping control分类
信息技术与安全科学引用本文复制引用
林晓冬,雷勇..基于T型三电平变流器的超导磁储能系统及其能量成型控制策略[J].电网技术,2018,42(2):607-613,7.
