Novel Submodule Topology With Large Current Operation and DC-Fault Blocking Capability for MMC-HVDC

被引：27

作者：

Meng, Yongqing ^{[1
]}

Zou, Yichao ^{[1
]}

Wang, Haibo ^{[1
]}

Kong, Ying ^{[1
]}

Du, Zhengchun ^{[1
]}

Wang, Xifan ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Shaanxi Prov Key Lab Smart Grid, Xian 710049, Peoples R China

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2021年 / 36卷 / 03期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Couplings; Inductors; Topology; Power harmonic filters; Harmonic analysis; Wind power generation; Insulated gate bipolar transistors; Modular multilevel converter (MMC); parallel multiple submodule (PM-SM); simplified full-bridge double submodule (S-FBDSM); MODULAR MULTILEVEL CONVERTERS; DESIGN; CELLS;

D O I：

10.1109/TPWRD.2020.3011228

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：

High-voltage direct-current system based on modular multilevel converter (MMC-HVDC) is widely expected to plays a significant role in promoting the development of large-scale offshore wind power. The maximum current limit of insulated-gate bipolar transistor (IGBT) is the main constrain for MMC-HVDC to operate in large current operation, while DC-fault blocking ability and economy are the two important concerns of MMC-HVDC. This paper proposes a novel parallel multiple submodule (PM-SM) topology to realize parallel output of submodule currents, which make MMC capable of large current operation and have filtering effect on high frequency harmonics. Combining with carrier phase-shift modulation or nearest level modulation, the frequency multiplication of bridge arm current of MMC can be realized to further improve the power quality of the system. Considering the demand of DC-fault blocking ability, simplified full-bridge double submodule (S-FBDSM) is also proposed as an economical option to compose PM-SM. It can provide double the reverse capacitance voltages in the arm current path regardless of a positive or negative arm fault current. The economic analysis is conducted to demonstrate the advantage of S-FBDSM. Simulation results and experiment results verify the feasibility and superiority of PM-SM composed of S-FBDSM.

引用

页码：1542 / 1551

页数：10

共 29 条

[1] Hybrid converter with ac side cascaded H-bridge cells against H-bridge alternative arm modular multilevel converter: steady-state and dynamic performance [J].