Results 51 to 60 of about 203 (153)

Safety Filter for Limiting the Current of Grid-Forming Matrix Modular Multilevel Converters

CoRR
Grid-forming (GFM) converters face significant challenges in limiting current during transient grid events while preserving their grid-forming behavior. This paper offers an elegant solution to the problem with a priori guarantees, presenting a safety filter approach based on Control Barrier Functions (CBFs) to enforce current constraints with minimal ...
Michael Schneeberger, Silvia Mastellone, Florian Dörfler   +2 more
openaire   +2 more sources

Research on an Asymmetric Fault Control Strategy for an AC/AC System Based on a Modular Multilevel Matrix Converter

Energies, 2019
This paper studies control strategies for an AC/AC system based on a modular multilevel matrix converter (M3C) when an asymmetric fault occurs in the secondary side ac system.
Chong Zhang, Daozhuo Jiang, Xuan Zhang, Yiqiao Liang   +3 more
doaj   +1 more source

Design and control of modular multilevel matrix converter with symmetrically integrated energy storage for low frequency AC system

IET Renewable Power Generation
Integrating energy storage units (ESUs) into part of sub‐modules (SMs) enables the decoupling active power control for the modular multilevel matrix converter (M3C).
Yingjie Tang, Zheren Zhang, Zheng Xu
doaj   +1 more source

Improved Inner-Loop Current Control Strategy Based on Deadbeat Current Prediction

Energies
In practical digital control systems for Modular Multilevel Matrix Converters (M3C), the inherent delays caused by signal sampling and algorithm execution lead to pulse output lags in conventional deadbeat control, subsequently resulting in current ...
Xiaoniu Zhang, Lixin Pang, Junwei Jing, Qingchi Wei, Xinghe Ma   +4 more
doaj   +1 more source

Nomenclature Overview and Beat Frequency in the Family of AC/AC Modular Multilevel Cascade Converters (MMCC)

IEEE Access
The family of modular multilevel cascade converter (MMCC) has gained significant attention owing to its modular configuration, scalability, and superior harmonic performance.
Mohammed Azharuddin Shamshuddin, Ralph M. Kennel, Diego Verdugo   +2 more
doaj   +1 more source

Fault ride-through coordinated control strategy for offshore wind power via flexible low-frequency transmission system

电力工程技术
The offshore wind power via flexible low-frequency transmission (FLFT) system based on the modular multilevel matrix converter (M3C) faces power surplus and stability risks following faults on the power frequency grid side.
Nianwen XIANG, Hailong CHENG, Shouhong YE, Bingbing SHAO, Shulai WANG, Yi LU   +5 more
doaj   +1 more source

Adaptive current control strategy for M3Cs using PSO-RBFNN-Tuned LADRC in fractional frequency transmission systems

International Journal of Electrical Power & Energy Systems
The Modular Multilevel Matrix Converter (M3C) has emerged as a promising solution for high-power fractional frequency transmission systems (FFTS), offering superior modularity and flexible control capabilities. However, conventional proportional-integral
Wei Luo, Yuchen Ma, Zhe Li, Yunqiao Shen
doaj   +1 more source

Research on High-Speed Modeling Method of Modular Multilevel Converter Valve Based on Data Derivation

Applied Sciences
Due to the highly demanding operating conditions of the Modular Multilevel Converter (MMC), as well as its inherently complex structure, electric field analysis of the MMC valve is crucial for the safe and stable operation of MMC-HVDC (MMC high voltage ...
Jun Zhang, Shuhong Wang, Youpeng Huangfu, Ruting Tang   +3 more
doaj   +1 more source

Optimization of the passive components of the Modular Multilevel Matrix Converter for Drive Applications

, 2012
The Modular Multilevel Matrix Converter (M3C) is a new topology which extends the Modular Multilevel Converter (M2C) family for converters to low speed drive applications. The energy pulsation and therefore the amount of the installed capacitance is very important for the design of such a converter. This paper presents a method to estimate the required
Kammerer, Felix, Kolb, Johannes, Braun, Michael   +2 more
openaire   +3 more sources

Control Strategy for Improving Active Frequency Support Capability of Offshore Wind Farm

Shanghai Jiaotong Daxue xuebao
In low frequency alternating current (AC) transmission systems, offshore wind farm is unable to respond to changes in onshore grid frequency in a timely manner due to frequency decoupling and signal transmission delays between the offshore wind power ...
LI Yibo, ZHOU Qian, ZHU Dandan, JIANG Yafeng, WU Qiuwei, CHEN Jian
doaj   +1 more source