Results 31 to 40 of about 70,476 (263)

48-V Input DC-DC High Step-Down Converter in GaN-Based Design

IEEE Access, 2022
This paper presents a novel high step-down DC-DC converter based on a switched-capacitor resonant topology. It is presented in a 48/8 V version, which was verified by simulations and experiments.
Szymon Folmer, Mateusz Kosakowski, Robert Stala   +2 more
doaj   +1 more source

DC-DC boost-flyback converter functioning as input stage for one phase low power grid-connected inverter

Archives of Electrical Engineering, 2014
The paper treats about main problems of one phase DC-AC microinverters that allow single solar cell to be joined with the grid. One of the issues is to achieve high voltage gain with high efficiency in DC circuit, which is necessary for proper operation ...
Kawa Adam, Penczek Adam, Piróg Stanisław   +2 more
doaj   +1 more source

On the Solution of Equilibrium Points of Power Systems With Penetration of Power Electronics Considering Converter Limitation

IEEE Access, 2021
Increasing penetration of power electronics is changing the understanding of modern power systems. In particular, current saturation of converters leads to multiple equilibrium points for both normal and short-circuit conditions.
Jie Song, Marc Cheah-Mane, Eduardo Prieto-Araujo, Oriol Gomis-Bellmunt   +3 more
doaj   +1 more source

Designing a Passively Damped Quasi-Two-Level-Operated Modular Multilevel Converter for Drive Applications

IEEE Access, 2020
This paper concentrates on the simplest quasi-two-level PWM operation mode for modular multilevel converters, where the internal currents within the converter are not controlled.
Jakub Kucka, Axel Mertens
doaj   +1 more source

iGSE-C_D—An Electric-/Displacement-Field Related Steinmetz Model for Class II Multilayer Ceramic Capacitors Under Low-Frequency Large-Signal Excitation

IEEE Open Journal of Power Electronics, 2023
Multilayer Ceramic Capacitors (MLCCs) are of paramount importance in electronics and ferroelectric Class II dielectrics enable outstanding energy-density values.
David Menzi, Morris Heller, George Kerridge, Peter Marley, Angela Ellmore, Shmuel Ben-Yaakov, Johann W. Kolar   +6 more
doaj   +1 more source

Prognosis of Long‐Term Continuous Renal Replacement Therapy and the Impact of Combined Continuous Intravenous Sodium Infusion Therapy

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Patients requiring long‐term continuous renal replacement therapy (CRRT) generally have poor prognoses. This study evaluated whether adding continuous intravenous sodium infusion (cIVNa) is associated with improved hemodynamics and outcomes in patients undergoing long‐term CRRT for ≥ 7 days.
Akinori Yamaguchi, Atsuyoshi Mita, Kosuke Sonoda, Makoto Harada, Koji Hashimoto, Hiroshi Imamura, Yuji Kamijo   +6 more
wiley   +1 more source

Practical Modal Analysis of a Prototyped Hydrogenerator

Vibration, 2021
The vibration on the stator core of hydrogenerators caused by electromagnetic forces is an important factor affecting the reliability and long-lasting operation of a machine.
Allan de Barros, Ahmed Galai, Amir Ebrahimi, Babette Schwarz   +3 more
doaj   +1 more source

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo, Weisi Dai, Jie Mao, Mei Ye, Xingshan Lu, Xiaocui Zhang   +5 more
wiley   +1 more source

Optimized Modulation for the Four-Switch Buck–Boost Converter With Reduced Current Ripple

IEEE Open Journal of the Industrial Electronics Society
The four-switch buck–boost converter is a widely used topology due to its bidirectional capability and wide operating voltage range in applications such as battery chargers, photovoltaic applications, or smart grids.
Victor Diaz, Andres Barrado, Pablo Zumel, Antonio Lazaro   +3 more
doaj   +1 more source

Superjunction Power Transistors With Interface Charges: A Case Study for GaN

IEEE Journal of the Electron Devices Society, 2020
Recent progress in p-GaN trench-filling epitaxy has shown promise for the demonstration of GaN superjunction (SJ) devices. However, the presence of n-type interface charges at the regrowth interfaces has been widely observed. These interface charges pose
Yunwei Ma, Ming Xiao, Ruizhe Zhang, Han Wang, Yuhao Zhang   +4 more
doaj   +1 more source