Results 31 to 40 of about 219,549 (265)

Seamless Grid Synchronization of a Proportional+Resonant Control-Based Voltage Controller Considering Non-Linear Loads under Islanded Mode

Energies, 2017
This paper proposes the grid synchronization method of inverter using a quasi Proportional+Multi Resonant (P+MR) control-based voltage controller a stationary reference frame. The inverter supplies a non-linear load under the islanded mode.
Kyungbae Lim, Jaeho Choi
doaj   +1 more source

Enhancing the Performance and Efficiency of Two-Level Voltage Source Inverters: A Modified Model Predictive Control Approach for Common-Mode Voltage Suppression

Energies, 2023
In this paper, a new modified model predictive control is proposed to improve the performance of the model predictive control for two-level voltage source inverters by alleviating computational burden and the disadvantages associated with the ...
Lamine Medekhel, Messaoud Hettiri, Chouaib Labiod, Kamel Srairi, Mohamed Benbouzid   +4 more
doaj   +1 more source

Voltage and Current Programmed Modes in Control of the Z-Source Converter

2008 IEEE Industry Applications Society Annual Meeting, 2008
The Z-source converter (ZSC) is an alternative power conversion topology that can both buck and boost the input voltage using passive components with improved reliability. Dynamic modeling of the ZSC from different perspectives has been studied. So far, based on these models, the dc-link voltage is controlled using direct measurement, or through ...
Gökhan Sen, Malik Elbuluk
openaire   +2 more sources

Impact of Japan's 2024 Physician Work‐Style Reform on Pediatric Hematology–Oncology: Educational Implications in a 2‐Year Survey

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Japan's 2024 physician work‐style reform introduced legally binding limits on physicians’ working hours, but its impact on education and workforce sustainability in pediatric hematology–oncology (PHO) remains unclear. Procedure We conducted a repeated cross‐sectional study with structured quantitative items and free‐text responses ...
Kiyohiko Kaizu, Masaharu Akiyama, Toshikazu Itabashi, Jun Hayakawa, Takahiro Kikuchi, Ryohei Fukunaga, Katsuyoshi Koh, Takahiro Ueda   +7 more
wiley   +1 more source

Two Independent Single-Loop Voltage Mode Control Method for 3-Level Buck Converter

IEEE Access
Compared to a basic buck converter, the 3-level buck converter operates with the output inductor at twice the switching frequency. Additionally, the voltage across its flying capacitor contributes to reducing the slope of the inductor current.
June-Bong Jeong, Chan-Gyu Kim, Jeong-Il Kang, Sang-Kyoo Han   +3 more
doaj   +1 more source

Research on the Operation Control Strategy of a Low-Voltage Direct Current Microgrid Based on a Disturbance Observer and Neural Network Adaptive Control Algorithm

Energies, 2019
Low-voltage direct current (DC) microgrid based on distributed generation (DG), the problems of load mutation affecting the DC bus under island mode, and the security problems that may arise when the DC microgrid is switched from island mode to grid ...
Liang Zhang, Kang Chen, Ling Lyu, Guowei Cai   +3 more
doaj   +1 more source

Modular Multilevel Converter Switching Frequency Harmonics Analysis and Suppression Through Cell Voltage Control

IEEE Open Journal of Power Electronics, 2020
This paper investigates the impact of reference's bias on the high frequency voltage spectrum for the modular multilevel converters (MMC). Analytical solution of the voltage spectrum under carrier Phase Shifted Pulse Width Modulation (PSPWM) is derived ...
Lu Wang, Yanjun Shi, Matthew Bosworth, Dionne Soto, Michael Steurer   +4 more
doaj   +1 more source

Simulation and research of battery simulator based on sliding mode control

Dianzi Jishu Yingyong, 2022
Based on the current reversible chopper circuit, the Buck-Boost converter is constructed by sliding mode control method, and a battery simulator with two-way current flow in topological structure is implemented to simulate the charging and discharging ...
Hu Xia, Cao Wenzhang, Dai Yuanyuan
doaj   +1 more source

Serum Myonectin Levels Are Positively Associated With Physical Function and Lower Frailty‐Related Limitation in Maintenance Hemodialysis Patients: A Cross‐Sectional Study

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Maintenance hemodialysis (MHD) patients frequently suffer from frailty, characterized by reduced physical function and poor prognosis. Myokines, such as myonectin, secreted by muscle, are emerging regulators of systemic health. This study investigated the relationship between serum myonectin, adipokines (adiponectin, omentin), and ...
Kenichi Kono, Yoshifumi Moriyama, Koji Ohashi, Naoya Otaka, Minako Tatsumi, Toyoaki Murohara, Noriyuki Ouchi, Satoru Oshima   +7 more
wiley   +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