Results 61 to 70 of about 708,045 (210)

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

Multiterminal High‐Voltage Direct Current Projects: A Comprehensive Assessment and Future Prospects

High Voltage, Volume 11, Issue 2, Page 317-344, April 2026.
ABSTRACT Multiterminal high‐voltage direct current (MT‐HVDC) systems are an important part of modern power systems, addressing the need for bulk power delivery and efficient renewable energy integration. This paper provides a comprehensive overview of recent advances in MT‐HVDC technology, including launched projects and ongoing initiatives.
Mohammad Hossein Mousavi, Hassan Moradi, Kumars Rouzbehi, Vijay K. Sood   +3 more
wiley   +1 more source

Parallel multi‐rate simulation scheme for modular multilevel converter‐based high‐voltage direct current with accurate simulation of high‐frequency characteristics and field programmable gate array‐based implementation

High Voltage
The real‐time simulation of the modular multilevel converter‐based high‐voltage direct current (MMC‐HVDC) transmission system has become a popular research topic.
Chongru Liu, Yanqi Hou, Haoyun Dong, Yipeng Lv, Xinyan Wang, Chenbo Su   +5 more
doaj   +1 more source

Hydrogels for Cancer Immunotherapy: Strategies From Construction to Application

MedComm, Volume 7, Issue 2, February 2026.
Hydrogels offer an innovative platform for cancer immunotherapy. Through tailorable crosslinking strategies, they form customizable drug delivery platforms that address diverse therapeutic requirements by loading specific immunotherapeutic agents. These systems demonstrate significant clinical potential for precise tumor immunotherapy.
Xiaohua Chen, Shan Wu, Yueyang Zhang, Lilu Feng, Yang Chen, Xuzhao Yang, Ke Men, Jiuqun Zhu, Ming Li   +8 more
wiley   +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

A Hybrid Ultra‐High Voltage DC Transformer With Digital Twin‐Driven Operation and Control

Digital Twins and Applications, Volume 3, Issue 1, January/December 2026.
This study introduces a digital twin‐driven hybrid ultra‐high‐voltage DC transformer (UHVDCT) that combines high‐capacity LCCs with low‐capacity MMCs at the UHV side. This innovative topology reduces MMC requirements by 32.9% while ensuring stable power flow and dynamic reactive balance through real‐time virtual‐physical synchronization.
Ling Xu, Le Zhao, Xiaohu Zhang, Hanlin Guo, Jie Fang, Zheren Zhang, Zheng Xu   +6 more
wiley   +1 more source

A Novel Negative‐Sequence Compensation Method for Electrified Railway Traction Power Supply Systems Based on Dual Rotary Phase Shifting Transformers

IET Electric Power Applications, Volume 20, Issue 1, January/December 2026.
This article proposes a novel electromagnetic rotary negative‐sequence compensator based on dual rotary phase‐shifting transformers to mitigate negative‐sequence currents in single‐phase traction power supply systems. The topology, mathematical model and coordinated speed control strategy are established, with sequence characteristics analysis ...
Xiangwu Yan, Xingping Yi, Jiaoxin Jia, Tianze Zhen, Jiahao Yu, Bingzhen Li   +5 more
wiley   +1 more source

Recent Advances in Hybrid, Plug‐In, Battery, and Fuel Cell EVs: Control Schemes, Modes, Converter Topologies, and Pros and Cons

IET Electrical Systems in Transportation, Volume 2026, Issue 1, 2026.
Direct current (DC)–DC converters are the backbone of electric vehicle (EV) power trains, enabling efficient and bidirectional energy flow between the battery, high‐voltage (HV) DC link, and auxiliary rails under tight isolation, gain, ripple, and electromagnetic interference (EMI) constraints.
Abhilash Sakhare, Suresh Mikkili, Praveen Kumar Bonthagorla, Fabio Crescimbini   +3 more
wiley   +1 more source

Inter‐Phase Power Balance Control Strategy of MMC‐MG Based on Arm Virtual Voltage

IET Energy Systems Integration, Volume 8, Issue 1, January/December 2026.
ABSTRACT In view of three‐phase power unbalanced caused by the output power difference of each phases microsource of the modular multilevel converter half‐bridge series microgrid (MMC‐MG) operating in the islanded mode, a balance control method of inter‐phase power is proposed.
Nier Wang, Sheng Xue, Jinjian Li
wiley   +1 more source

Offshore low frequency AC transmission with back-to-back modular multilevel converter (MMC)

, 2015
This paper evaluates the use of a back-to-back modular multilevel converter (B2B-MMC) in offshore low frequency (LF) AC transmission. The scheme is compared to two alternative transmission technologies: DC and 50Hz AC.
Yu, J., J. Yu, Y. Tang, O. Alatise, Ran, Li, L. Ran, P.B. Wyllie, X.M. Wang, Wyllie, P. B., Wang, X. M., Alatise, Olayiwola M., Tang, Yuan   +11 more
core   +1 more source