A Novel STATCOM Based on Diode-Clamped Modular Multilevel Converters

被引：58
|
作者：
Liu, Xiangdong [1 ]
Lv, Jingliang [1 ]
Gao, Congzhe [1 ]
Chen, Zhen [1 ]
Chen, Si [1 ]
机构：
[1] Beijing Inst Technol, Automat Sch, Beijing 100081, Peoples R China
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2017年 / 32卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Diode-clamped modular multilevel converter ((DCMC)-C-2); modular multilevel converter (MMC); static synchronous compensator (STATCOM); PWM STATCOM; TRANSFORMERLESS;
D O I：
10.1109/TPEL.2016.2616495
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new static synchronous compensator (STATCOM) based on the diode-clamped modular multilevel converter ((DCMC)-C-2) is proposed in this paper. In this converter topology, the capacitor voltage is clamped by using a low power rating diode in each submodule. The quantity of voltage sensors is significantly reduced and is free from the number of voltage levels. Furthermore, the voltage balancing control method becomes very simple and the capacitor voltage balance speed is fast. Based on the structure of modular multilevel converter, the (DCMC)-C-2-STATCOM has the capability of Var compensation and negative-sequence current compensation. The topology characteristics and compensation control method of (DCMC)-C-2-STATCOM are investigated in this paper. Experimental results obtained from a laboratory prototype validate that the capacitor voltage of the proposed (DCMC)-C-2-STATCOM can be well balanced and the Var and negative-sequence current compensations are effective.
引用
收藏
页码：5964 / 5977
页数：14
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