基于托卡马克超导纵场线圈的SMES-UPS变流器设计及其控制策略  

DESIGN AND CONTROL STRATEGIES OF CONVERTER FOR SMES-UPS BASED ON TF SUPERCONDUCTING COILS OF TOKMAK

作　　者：刘小宁[1] 王付胜[1] 

机构地区：[1]中国科学院等离子体所电源室,安徽省合肥市230031

出　　处：《中国电机工程学报》2004年第11期172-176,共5页Proceedings of the CSEE

摘　　要：基于超导托卡马克纵场线圈构成的超导磁体储能不停电电源,可用来避免由于电网嬗变或秒级跳闸使低温和真空系统掉电导致的托卡马克装置中的超导磁体失超。文中为SMES-UPS设计的是电流型变流器系统,该系统既可用作为纵场磁体正常工作时的励磁电源又可用作电网故障时关键负载的备份电源。文章对该SMES-UPS变流器的不同工作条件下的原理和控制目标做了说明,对不同控制目标提出了相应的简单易实现的控制策略,并用Matlab进行了数字仿真,验证了控制策略的可行性。SMES-UPS based on torodial field supercon- ducting coils (TFSC) of the superconducting tokamak can be used to avoid the breakdown of the cryogenic and vacuum system because of the deep voltage sag or other grid faults during the tokamak抯 experiment, which will result in the quench of the superconducting coils of tokamak. A current source converter for this SMES-UPS is proposed, which can serve as the excitation PS of TFSC as well as the backup power supply for critical loads. Furthermore,the suitable control strategies and control block diagrams for different aims are described respectively. The digital simulation results by MATLAB are provided to validate the proposed control strategies for SMES-UPS.

关 键 词：SMES 变流器 电网故障 控制策略 跳闸 超导磁体 不停电电源 纵场线圈 托卡马克装置 超导托卡马克 

分 类 号：TM26[一般工业技术—材料科学与工程] TL631.24[电气工程—电工理论与新技术]