Results 21 to 30 of about 1,043,189 (284)

Flying-capacitor-based chopper circuit for DC capacitor voltage balancing in diode-clamped multilevel inverter [PDF]

, 2010
This paper proposes a flying-capacitor-based chopper circuit for dc capacitor voltage equalization in diode-clamped multilevel inverters. Its important features are reduced voltage stress across the chopper switches, possible reduction in the chopper ...
Ghosh, Arindam, Shukla, Anshuman, Joshi, Avinash   +2 more
core   +2 more sources

A VSC transmission system using flying capacitor multilevel converters and selective harmonic elimination pWM control [PDF]

, 2005
A transmission system based on voltage-source three-level flying capacitor (FC) multilevel converters with selective harmonic elimination pulse-width modulation (SHE-PWM) control is presented in this paper.
Lie Xu, Agelidis, V.G., V.G. Agelidis, Xu, L.   +3 more
core   +1 more source

VSC transmission system using flying capacitor multilevel converters and hybrid PWM control [PDF]

, 2007
A high-voltage direct current (HVDC) transmission system based on three-level flying capacitor (FC) multilevel converters with hybrid pulse-width modulation (PWM) is presented in this paper.
Agelidis, V.G., Xu, L.
core   +1 more source

A Novel Submodule Voltage Balancing Scheme for Modular Multilevel Cascade Converter—Double-Star Chopper-Cells (MMCC-DSCC) Based STATCOM

IEEE Access, 2019
A novel capacitor voltage balancing scheme for modular multilevel cascade converter-double-star chopper-cells (MMCC-DSCC)-based STATCOM is proposed in this paper.
Yu Jin, Qian Xiao, Chaoyu Dong, Hongjie Jia, Yunfei Mu, Bing Xie, Yanchao Ji, Sanjay K. Chaudhary, Remus Teodorescu   +8 more
doaj   +1 more source

Capacitor voltage balancing control with reducing the average switching frequency in MMC

The Journal of Engineering, 2019
Modular multilevel converter (MMC) has a very good application prospect in the flexible high-voltage direct current (HVDC) transmission, but higher self-loss will affect the efficiency and restrict the development.
Shunliang Wang, Tianqi Liu, Tianqi Liu, XingChuan Huang, Yuexiao Yu   +4 more
doaj   +1 more source

Improved Control of Capacitor Voltage Balancing in Modular Multilevel Converter Submodules

IEEE Access
An improved incremental capacitor voltage balancing control strategy is proposed to solve the problems of large switching frequency, high complexity of the bubble method sorting algorithm, and exceeding the limit of the capacitor voltage fluctuation rate
Yanling Lyu, Yuansong Zi, Xiaowei Li
doaj   +1 more source

A Voltage Balancing Control Strategy for Modular Multilevel Converter Based on Allowable Capacitance Voltage of Sub-modules

Zhongguo dianli, 2023
Aiming at the problems of high switching frequency, large switching loss and large amount of computation in traditional voltage balancing strategy for modular multilevel converter (MMC), an improved capacitor voltage balancing control strategy is ...
Binqiao ZHANG, Cheng LI, Zhenxing LI, Bowen XIAO, Chuang LIU, Fei WANG   +5 more
doaj   +1 more source

Generalized Structures for Switched-Capacitor Multilevel Inverter Topology for Energy Storage System Application

Applied Sciences, 2021
The apparent advantages of Multilevel Inverter (MLI) topologies in handling medium and high power with less loss in switching and lower harmonic distortion in an output voltage waveform makes it better than the conventional inverter.
Mu Anas, Adil Sarwar, Anzar Ahmad, Afroz Alam, Shafiq Ahmad, Mohamed Sharaf, Mazen Zaindin, Muhammad Firdausi   +7 more
doaj   +1 more source

Liver organoids: modelling complexity in homeostasis and disease

FEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +1 more source

Emerging experimental and computational methods for studying redox‐regulated structural transitions

FEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass, Dana Reichmann, Gábor Erdős   +2 more
wiley   +1 more source