Results 81 to 90 of about 1,873 (236)

Thermally Compensated Discontinuous Modulation Strategy for Cascaded H-Bridge Converters [PDF]

, 2018
A widely adopted multilevel converter topology is the cascaded H-bridge (CHB), as it can provide voltage and power scalability. However, since the CHB converter can be composed by cells with different remaining lifetime, it could be useful to delay a ...
Markus Andresen, Ko, Youngjong, Giampaolo Buticchi, Buticchi, Giampaolo, Marco Liserre, Youngjong Ko, Liserre, Marco, Andresen, Markus   +7 more
core   +1 more source

A Discontinuous Modulation Method with Variable Clamping Interval Width of the Modular Multilevel Converter

, 2022
The modular multilevel converter (MMC) has been widely used because of the advantages of easier expansion, lower harmonic distortion and higher output voltage level.
Xuefeng Jin, Xin Gu, Langang Ma, Guozheng Zhang   +3 more
core   +1 more source

Guiding and Manipulating Light Fields in Microstructured Liquid Crystals

Advanced Physics Research, EarlyView.
This review summarizes recent advances in guided‐wave optics enabled by microstructured liquid crystal (LC) devices, covering their fundamental material properties, key degree of freedom for dynamic light field manipulations. The advances of linear guided‐wave optics, nonlinear‐optics with spatial optical solitons, and microlasers in LC‐based devices ...
Shan‐shan Chang, Yong‐shuai Li, Jin‐hui Chen   +2 more
wiley   +1 more source

Simplified Carrier-Based SVDPWM Methods Using Reduced Common Mode Voltage Vector Redundancy for Improving Output Current Ripple in Four-Level NPC Inverter

IEEE Access
In this article, new fast and Three-level reduced common-mode voltage (RCMV) space vector Discontinuous pulse width modulation (SVDPWM) strategies are proposed to achieve high performance in four-level neutral point clamped (4L-NPC) inverters.
Le Nam Pham, Quoc Dung Phan, Nho-van Nguyen   +2 more
doaj   +1 more source

Modeling Acoustic Attenuation, Sound Velocity and Wave Propagation in Lithium‐Ion Batteries via a Transfer Matrix

Batteries &Supercaps, Volume 8, Issue 3, March 2025.
“A simple 1D transfer matrix model of a battery is introduced and parametrized using harvested individual cell components at 0 % and 100 % SoC. This model allows for the calculation of group velocity and attenuation. The results of the model show good agreement with measured values, highlighting increased attenuation and group velocity at the ...
Simon Feiler, Lukas Gold, Sarah Hartmann, Guinevere A. Giffin   +3 more
wiley   +1 more source

Discontinuous SVPWM-Based Speed Control of Unsymmetrical Two-Phase Induction Motor Using a Multifunctional Drive System

IEEE Access
This paper proposes a multifunctional drive system for closed loop speed control of an unsymmetrical two-phase induction motor. A two-phase three-leg voltage source inverter providing constant Volts/Hz and slip regulation control for a machine end ...
Watcharin Promkhun, Vijit Kinnares, Prayad Kongsuk, Wekin Piyarat, Sirichai Dangeam   +4 more
doaj   +1 more source

Fiber‐type soft bioelectronics for wearable and implantable sensing and therapy

BMEMat, EarlyView.
Fiber‐type soft bioelectronics are emerging as versatile platforms for wearable and implantable health monitoring and therapeutic applications. These bioelectronics use organic and inorganic matrices combined with advanced fillers, which feature high conductivity, electrochemical sensitivity, softness, and biocompatibility.
Haneul Kim, Hak Yong Kim, Ja Hoon Koo, Gi Doo Cha, Dae‐Hyeong Kim, Hye Jin Kim   +5 more
wiley   +1 more source

SYNCHRONOUS PWM CONTROL OF SYMMETRICAL DUAL THREE-PHASE DRIVE IN THE OVERMODULATION ZONE [PDF]

Problems of the Regional Energetics, 2013
The analysis of operation of symmetrical six-phase (dual three-phase) ac drive system (which is a promising solution for the medium-power and high-power applications) with synchronized pulse-width modulation (PWM) during overmodulation has been performed.
Oleschuk V.I., Sizov A.
doaj  

Ternary Crosslinking Builds Nanosheet Hard Carbon and Interfacial Polarization Regulates Na⁺ Kinetics in Hard Carbon Anodes

Carbon Energy, EarlyView.
Nanosheet Hard Carbon for Fast Na+ Storage ABSTRACT Hard‐carbon anodes for sodium‐ion batteries are often constrained by low initial Coulombic efficiency, severe interfacial polarization, and sluggish Na⁺ kinetics, especially when porosity engineering amplifies electrolyte consumption.
Dongke Cai, Fan Liu, Shuai Jiang, Shuwen Zhang, Bing Li, Qian Zhao   +5 more
wiley   +1 more source

Discontinuous modulation of modular multilevel converters without the need for extra submodules

, 2015
Publisher Copyright: © 2015 IEEE.In this paper, a new approach to the discontinuous modulation technique for the operation of the modular multilevel converter (MMC) is presented. Discontinuous modulation is based on adding a zero-sequence to the original
Ceballos, S., Agelidis, V. G., S. Ceballos, J. Pou, G. Konstantinou, R. Picas, Pou, J., Balcells, J., J. Zaragoza, J. Balcells, Konstantinou, G., Zaragoza, J., V. G. Agelidis, Picas, R.   +13 more
core   +1 more source