Results 61 to 70 of about 191,999 (308)

Multiple Sclerosis Relapse Activity After Ozanimod Discontinuation in DAYBREAK Trial Participants

Annals of Clinical and Translational Neurology, EarlyView.
Multiple Sclerosis Relapse Activity After Ozanimod Discontinuation in DAYBREAK Trial Participants. ABSTRACT Objective Return of disease activity is expected when patients discontinue disease‐modifying therapy (DMT) for multiple sclerosis (MS). Some MS DMTs are associated with higher‐than‐expected disease activity (rebound) after discontinuation.
Ralf Gold, Krzysztof W. Selmaj, Regina Berkovich, Jeffrey A. Cohen, Giancarlo Comi, Eva K. Havrdová, James K. Sheffield, Hetal Desai, Chun‐Yen Cheng, Jon V. Riolo, Andrew Thorpe, Erik DeBoer, Bruce A. C. Cree   +12 more
wiley   +1 more source

A 2.7-kW, 29-MHz class-E/F/sub odd/ amplifier with a distributed active transformer [PDF]

, 2005
A Class-E/Fodd high power amplifier (PA) using the distributed active transformer (DAT) is demonstrated at 29MHz. The DAT combines the output power from four VDMOS push-pull pairs.
Jeon, Sanggeun, Rutledge, David B.
core   +1 more source

Autotuning of Resonant Switched-Capacitor Converters for Zero Voltage Switching

2023 IEEE 24th Workshop on Control and Modeling for Power Electronics (COMPEL), 2023
By operating resonant switched-capacitor converters at resonance, zero current switching (ZCS) can be achieved to eliminate voltage-current overlap losses. Previous literature has shown that zero voltage switching (ZVS) can also be achieved to further reduce switching losses and attain a higher peak efficiency by recovering the charge stored in the ...
Sambo, Haifah B, Zhu, Yicheng, Pilawa-Podgurski, Robert CN   +2 more
openaire   +3 more sources

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

Isolated High Step-Up Soft-Switching Quasi-Z-Source DC–DC Converter

IEEE Access
The DC microgrid with energy storage cells has strong stability, simple control, and a convenient power supply for DC loads, increasingly becoming the grid-connected structure of distributed generation systems.
Guosheng Tian, Shuo Chen, Xinping Ding, Jishen Peng, Zhuangzhuang Kou   +4 more
doaj   +1 more source

A phase‐shift modulated series resonant converter achieving zero‐voltage and zero‐current switching for wide output voltage range battery charging applications

IET Power Electronics, 2022
In this article, a phase‐shift modulated zero‐voltage and zero‐current switching (ZVZCS) series resonant converter (SRC) was proposed for constant current (CC) and constant voltage (CV) charging operating at the series resonant frequency.
Yanke Liang, Xu Liu, Shixuan Lyu
doaj   +1 more source

A novel two-quadrant zero-voltage transition converter for DC motor drives [PDF]

, 1997
A novel zero-voltage-transition (ZVT) two-quadrant (2Q) power converter for DC motor drives is presented. It possesses the definite advantage that both main transistors and rectifiers can operate with zero-voltage switching in both motoring and ...
Chan, CC, Chan, DTW, Chau, KT, Ching, TW
core   +1 more source

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

International Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg, Paulo Jefferson Dias de Oliveira Evald, Shivam Chaturvedi, Hilton Abilio Gründling, Rodrigo Varella Tambara, Wencong Su   +5 more
wiley   +1 more source

An optimized scheme for OLTCs of distribution transformers using flywheel motors

Zhejiang dianli
In the switching process of on-load tap changers （OLTCs） for distribution transformers， electric arcs are likely to occur at the contacts， which have an adverse impact on the service life and normal operation of the equipment.
LI Jiang, GUO Surong, LIU Bo
doaj   +1 more source

Comprehensive steady state analysis of bidirectional dual active bridge DC/DC converter using triple phase shift control [PDF]

, 2014
Several papers have been published recently on TPS control of dual active bridge (DAB) converter, however, no complete study of the converter operation behaviour exists, that takes into account all switching modes in both charging and discharging ...
Aboushady, A.A., Adam, G.P., Ahmed, K.H., Harrye, Yasen A.   +3 more
core   +3 more sources