Results 71 to 80 of about 5,475 (232)

Enhanced flat-topped modulation for MMC control in HVDC transmission systems [PDF]

, 2017
Flat-topped modulation is a member of the family of triplen-series injection techniques that have been extensively utilized in PWM inverter systems to increase the DC-link, and hence semiconductor, utilization.
Fletcher, John E., Li, Rui, Williams, Barry W., Xu, Lie   +3 more
core   +1 more source

Harmonic Analysis of Transmission Scheme for Offshore Wind Farms Based on Diode Rectifier Unit

Engineering Reports, Volume 7, Issue 10, October 2025.
This paper builds a general mathematical for the multiple rectifier circuit used in DRU, which is based on the 12‐pulse and 24‐pulse rectifier circuits, and analyzes the harmonics of DRU using different rectifier circuits before and after the installation of AC filters by an offshore wind farm integration project. ABSTRACT The diode rectifier unit (DRU)
Qing Chen, Bin Lin, Xiaohe Wang, Peng Liang, Zheren Zhang   +4 more
wiley   +1 more source

MMC based SST [PDF]

, 2015
The Modular Multilevel Converter (MMC) is a type of DC-AC electronic power converter suitable for HVDC applications, thanks to its modularity and to the symmetrical design of the cells.
Arias Pérez de Azpeitia, Manuel, Briz del Blanco, Fernando, Díaz Reigosa, David, López Medina, Mario, Rodríguez Alonso, Alberto   +4 more
core   +1 more source

Analysis and improvement of the reactive power cascade control strategy for MMC‐HVDC receiving‐end converter connected to weak grid

IET Generation, Transmission & Distribution
The weak AC grid in a modular multilevel converter modular multilevel converter based high voltage direct current (MMC‐HVDC) receiving‐end system requires faster reactive power support from the receiving‐end MMC.
Junhua Xu, Guopeng He, Yong Liu, Songqin Tang, Daiyu Xie, Mingyuan Chen   +5 more
doaj   +1 more source

Steady‐state power operation region of a modular multilevel converter connecting to an AC grid

High Voltage, 2021
The modular multilevel converter (MMC) has become a widely used topology for voltage source converter–based high‐voltage direct current transmission projects.
Jiecong Wang, Chongru Liu, Udaya D. Annakkage, Xiao Li, Chenbo Su   +4 more
doaj   +1 more source

Converter station selection method of urban VSC‐DC intertie for grid resilience enhancement

High Voltage, Volume 10, Issue 3, Page 581-594, June 2025.
Abstract The site selection of converter stations for voltage source converter‐based direct current (VSC‐DC) interties can significantly impact their control performance, particularly when both grid‐following control (GFL) and grid‐forming control (GFM) are configured.
Mingyang Li, Kaiqi Sun, Ke‐Jun Li, Yang Liu, Ge Cao, Shuxin Song, Yuanyuan Sun   +6 more
wiley   +1 more source

Mechanism and suppression of breaking overvoltage of DC circuit breakers

High Voltage, Volume 10, Issue 1, Page 32-46, February 2025.
Abstract The occurrence of breaking overvoltage in a DC circuit breaker (DCCB) poses a potential threat to the safe operation of a DC grid. Based on the structure of the ±10 kV three‐terminal DC distribution network, this paper sets up the medium‐voltage DCCB and formulates a fault protection strategy.
Lu Qu, Zhangqing Yu, Zhizheng Gan, Xin Yan, Cheng Jiang, Yulong Huang, Mingshen Li, Jian Feng   +7 more
wiley   +1 more source

Virtual Submodule Predictive Control method for Power Electronic Transformer based on MMC Structure [PDF]

E3S Web of Conferences, 2019
In order to achieve flexible and efficient operation of intelligent power distribution, solving the problems of traditional distribution transformer such as large volume and weight, easy to generate harmonics when overload, and need supporting protection
Zhao Jinghong, Huang Xing, Zhao Honghao, Hong Xin   +3 more
doaj   +1 more source

Tecnología modular multilevel converter (MMC) en sistemas HVdc

, 2020
Medellín
Hoyos, Sebastián, González, Jorge W., Cardona, Hugo A., Isaac, Idi A., López, Gabriel J.   +4 more
openaire   +1 more source

Hybrid modular multilevel converter (MMC) applications under over-modulation [PDF]

, 2021
The Modular Multilevel Converter (MMC) has become a prominent converter topology due to its several advantages: high modularity, high scalability, low harmonic distortion, and high efficiency. In particular, due to its modular structure, it is possible to increase its voltage rating by stacking extra cells. The MMC has been successfully applied to high
openaire