摘要
针对牵引供电系统中频率自适应性能差、谐波污染严重等电能质量问题,在传统二阶广义积分器(SOGI)的基础上,结合锁频环(FLL)提出了一种新型的SOGI-FLL结构。在采用模块化多电平换流器结构的铁路功率调节器(MMC-RPC)中使用该结构,能够提高系统频率的跟踪能力,加快响应速度,且能有效治理谐波,提高电能质量。在Matlab中搭建基于新型SOGI-FLL的MMC-RPC仿真系统模型,仿真结果和理论分析证实了该新型SOGI-FLL运用到MMC-RPC系统中的可行性及有效性。
The traction power supply system has the problems of the power quality, such as poor frequency adaptiveperformance and harmonics. On the basis of the traditional integrator （ Second Order Generalized Integrator, SOGI）, combined with the frequency locked loop （FLL） a new SOGI？FLL structure is proposed in this paper. Thisstructure is used in the modular multilevel converter railway static power conditioner （MMC-RPC）, which is one ofmodular multilevel converter structure. It can improve the tracking ability of the system frequency, speed up the re-sponse, effectively control harmonics, and improve power quality. The MMC-RPC simulation system model basedon SOGI？FLL is built in Matlab, and the simulation results and theoretical analysis prove the feasibility and effec-tiveness of the SOGI？FLL application in MMC-RPC system.
作者
宋平岗
龚家康
周振邦
SONG Ping-gang;GONG Jia-kang;ZHOU Zhen-bang(School of Electrical and Automation Engineering,East China Jiaotong University,Nanchang 330013,China)
出处
《电工电能新技术》
CSCD
北大核心
2018年第5期12-20,共9页
Advanced Technology of Electrical Engineering and Energy
基金
国家自然科学基金项目(51367008)
关键词
模块化多电平换流器
铁路功率调节器
二阶广义积分器
锁频环
modular multilevel converter
railway static power conditioner
second order generalized integrator
frequency locked loop
