Results 1 to 10 of about 26,994 (304)
Effect of a ripple current on the efficiency of a PEM electrolyser [PDF]
Results in Engineering, 2021 The aim of this study was to determine how the efficiency of a proton exchange membrane (PEM) electrolyser is affected by an electric ripple current and the different characteristics of the ripple current (frequency, amplitude and waveform).
Rupert Gouws +2 more
exaly +4 more sources
Input current ripple reduction of DC/DC converters [PDF]
Energy Reports, 2023 The input current ripple problem of DC/DC converters receives more and more attention recently. To meet the increasingly demanding requirements, the fundamental components of the current ripple are researched and the corresponding current ripple ...
Xinyi Zhu +6 more
doaj +2 more sources
A two-stage dc–dc converter with high voltage gain and reduced current ripple for efficient PV energy harvesting [PDF]
Scientific ReportsPV systems require a dc–dc converter to operate at the maximum power point (MPP). However, switching based operation of these converters causes ripple current.
Hakan Akca
doaj +2 more sources
Analysis and Control of Current Ripples of Z-Source Inverters [PDF]
IEEE Access, 2020 Load current ripple is an important issue in the design and control of inverters since it influences the torque ripple and noise amplitude of a motor drive. The current ripple of Z-source inverter (ZSI) is analyzed in this paper.
Dong Shuai, Zhang Qianfan
doaj +2 more sources
On the formation of current ripples [PDF]
Scientific Reports, 2015 AbstractFor grain sizes finer than coarse sand, the first flow-transverse bedforms to develop are current ripples. Although numerous studies have analysed different aspects of bedform morphodynamics, to date no comprehensive physical explanation for the formation of ripples has been given.
Bartholdy, Jesper +5 more
openaire +3 more sources
Brushless DC Motor Current Prediction Torque Ripple Suppression
Journal of Harbin University of Science and Technology, 2020 Aiming at the torque ripple problem of brushless DC motor, a current predictive control method combined with commutation overlap method is proposed to suppress the commutation torque ripple Based on the analysis of the cause of the commutation torque ...
LDegang, ZHANG Chenguang, HOU Zhengdong
doaj +1 more source
Low‐ripple high‐efficiency AC‐DC rectifier with auxiliary compensator for hydrogen production
IET Power Electronics, 2023 In hydrogen production, AC‐DC rectifiers must provide a high current and low voltage to the production load. This paper focuses on the efficient performance and elimination of the output ripple in these AC‐DC rectifiers.
Li Zhang +5 more
doaj +1 more source
Investigation of current-ripple for three-phase four-wire inverter-fed motors
Energy Reports, 2020 The three-phase four-wire drive system (4wEL) has been proved to be available of realizing fault-tolerant operation. However, this type of electric drive system (EDS) still has problems of higher current ripple than traditional three-wire EDSs.
Zhao Zhao, Roberto Leidhold
doaj +1 more source
IEEE Access, 2020 In this paper, an optimized space-vector modulation (SVM) to reduce DC-link ripple current in three-level inverters is presented. Various types of capacitors can be utilized to balance the voltage in the DC-link of voltage source inverters.
Sang-Won An, Seok-Min Kim, Kyo-Beum Lee
doaj +1 more source
PERMANENT MAGNET SYNCHRONOUS MOTOR TORQUE RIPPLE REDUCTION USING PREDICTIVE TORQUE CONTROL
Journal of Engineering and Sustainable Development, 2023 The control of (PMSM) is the subject of this study and the torque ripple reduction in (PMSM) is the main goal of this work. Torque and flux are controlled using a predictive model and Vector Control.
Saif T. Bahar, Riyadh Ghanem Omar
doaj +1 more source