Control strategy for Modular Multilevel Converters in Sub-module Fault State

被引：0
作者：
Wang, Zaifu [1 ]
Zhang, Aimin [1 ]
Zhang, Hang [2 ]
Zhang, Chao [2 ]
Bai, Yunfei [2 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Xian 710049, Peoples R China
[2] Xi An Jiao Tong Univ, Sch Elect Engn, Xian 710049, Peoples R China
来源：
PROCEEDINGS OF THE 2015 10TH IEEE CONFERENCE ON INDUSTRIAL ELECTRONICS AND APPLICATIONS | 2015年
关键词：
modular multilevel converter (MMC); sub-module fault; phase energy controller; circulating current;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
By analyzing the topology and mathematical model of modular multilevel converters (MMCs), a control scheme is proposed to control the MMC in sub-module fault state based on phase energy controller. An AC-DC decoupled model is built to analyze and design the phase energy controller. In addition, by analyzing the mechanism of circulating currents for MMC in sub-module fault state, a new circulating currents suppressing controller is presented to minimize the circulating currents. Taking the gird-connected MMC rectifier as an example, a comprehensive control scheme is proposed to perform the DC voltage control as well as the reactive power control. Simulation results show that the proposed comprehensive control scheme has excellent stead-state and dynamic characteristics for the MMC in sub-module fault state; and it can eliminate the three phase circulating currents effectively.
引用
收藏
页码：369 / 374
页数：6
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