[1]宋平岗,董 辉,周振邦,等. 新型牵引供电系统中MMC 变流器环流无源抑制策略[J].机车电传动,2018,(01):1.[doi:10.13890/j.issn.1000-128x.2018.01.100]
 SONG Pinggang,DONG Hui,ZHOU Zhenbang,et al. Passive Circulation Suppression Strategy of MMC Converter in New TPSS[J].Electric Drive for Locomotives,2018,(01):1.[doi:10.13890/j.issn.1000-128x.2018.01.100]
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 新型牵引供电系统中MMC 变流器环流无源抑制策略()
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机车电传动[ISSN:1000-128X/CN:43-1125/U]

卷:
期数:
2018年01期
页码:
1
栏目:
研 究 开 发
出版日期:
2018-01-31

文章信息/Info

Title:
 Passive Circulation Suppression Strategy of MMC Converter in New TPSS
作者:
 宋平岗董 辉周振邦吴继珍孙楠楠
 (华东交通大学 电气与自动化工程学院,江西 南昌 330013)
Author(s):
 SONG Pinggang DONG Hui ZHOU Zhenbang WU Jizhen SUN Nannan
 ( School of Electrical and Automation Engineering, East China Jiaotong University, Nanchang ,Jiangxi 330013, China )
关键词:
 牵引供电系统模块化多电平换流器相间环流能量控制无源控制理论
Keywords:
 traction power supply system modular multilevel converter interphase current energy control passivity control theory
分类号:
U223.5;TM76
DOI:
10.13890/j.issn.1000-128x.2018.01.100
文献标志码:
A
摘要:
 为解决现行电气化铁路牵引供电系统中过分相和电能质量低等问题,介绍一种新型牵引供电系统。利用模块化多电平换流器(modular multilevel converter, MMC) 在电网和接触网之间构建直流网络,由于MMC 桥臂之间电压不等,导致内部产生相间环流影响系统运行。本文从能量控制的角度出发,提出一种环流无源抑制策略。建立dq 坐标系下的相间环流EL 模型,根据无源控制理论证明环流具有无源性;通过注入阻尼的方法,选取适当的无源控制规律,让系统能量实际值快速收敛于期望值。利用PSCAD/EMTDC 仿真平台建立三相—单相新型牵引供电系统模型,结果表明:通过改变投入状态的子模块个数来控制能量,使上、下桥臂电压之和趋近于直流电压,达到抑制环流的目的。
Abstract:
 In order to solve the problems of excessive power and low power quality in traction power supply system (TPSS) of electrified railway, a new TPSS was introduced. Modular multilevel converter (MMC) was used to construct a DC grid between the grid and the contact network, which would generate interphase circulation because of the voltage difference between MMC bridge arms, affecting the system operation. From the viewpoint of energy control, this paper proposed a passive suppression strategy. The EL model of interphase circulation was established in dq coordinate system. The passivity of circulation was proved by passive control theory. The appropriate passivity control law was selected to make the system energy actual value converge quickly to the expected value by using the method of injecting damping. Three phase single-phase traction power supply system model was built on the PSCAD/EMTDC simulation platform. The results showed that energy was controlled by changing the number of sub modules in the input state, the sum of the upper and lower arm voltages approached the DC voltage to achieve the purpose of suppressing circulation.

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备注/Memo

备注/Memo:
 作者简介:宋平岗(1965-),男,博士,教授,主要从事电力电子与新能源方面的研究。
更新日期/Last Update: 2018-01-10