Results 51 to 60 of about 3,218 (218)

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

open access: yesHigh 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   +3 more
wiley   +1 more source

Research on Hybrid Rectifier for High Power Electrolytic Hydrogen Production Based on Modular Multilevel Converter

open access: yesEnergies
Aiming at the problem that silicon-controlled rectifiers (SCR) and pulse width modulation (PWM) rectifiers cannot balance high power levels, high hydrogen production efficiency, and high grid connected quality in the current research on rectifier power ...
Cheng Huang, Yang Tan, Xin Meng
doaj   +1 more source

Single-Stage Control System of I-MMC-Based Island MVDC Link Receiver With Multiple Modulation Freedoms

open access: yesIEEE Access, 2020
In the medium-voltage AC/DC distribution networks with distributed renewable sources on islands, a multi-port receiver is the key factor for hybrid power conversion.
Chuang Liu   +4 more
doaj   +1 more source

Hydrogels for Cancer Immunotherapy: Strategies From Construction to Application

open access: yesMedComm, 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   +8 more
wiley   +1 more source

Operation of three-phase modular multilevel converter (MMC) with reduced number of arms

open access: yes2016 IEEE International Conference on Industrial Technology (ICIT), 2016
Conventional three-phase MMC consists of six-arms, each arm is controlled to generate unipolar voltage ranging from zero to Vdc where Vdc is the input DC voltage. Each arm voltage has two components (DC and AC components). In this work, the operation of MMC with reduced number of arms (four arms only), correspondingly reduced cost is presented.
Ahmed A. Elserougi   +2 more
openaire   +2 more sources

Reverse-blocking modular multilevel converter for battery energy storage systems

open access: yesJournal of Modern Power Systems and Clean Energy, 2017
Energy storage systems with multilevel converters play an important role in modern electric power systems with large-scale renewable energy integration.
Xiaofeng YANG   +6 more
doaj   +1 more source

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

open access: yesDigital 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   +6 more
wiley   +1 more source

Comparison of full power frequency converter topologies for large capacity variable speed pumped storage units

open access: yes电力工程技术
Variable speed pumped storage units have obvious advantages in efficiency and adaptability under various operation conditions compared with traditional fixed-speed pumped storage units.
Bo ZHAO   +5 more
doaj   +1 more source

Loss reduction analysis and control of AC-voltage-boosted FBSM MMC by injecting second harmonic circulating current

open access: yesThe Journal of Engineering, 2019
Reducing the power loss and handling short-circuit faults in HVDC systems are crucial for economical and reliable operation of modular multilevel converters (MMC). This paper proposes a loss reduction method for AC voltage-boosted FBSM-MMC by controlling
Muchao Xiang, Jiabing Hu, Zhiyuan He
doaj   +1 more source

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

open access: yesIET 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   +3 more
wiley   +1 more source

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