Results 21 to 30 of about 496 (215)

Performance Evaluation of Eleven-Phase Induction Machine with Different PWM Techniques

The Journal of Engineering Research, 2015
Multiphase induction machines are used extensively in low and medium voltage (MV) drives. In MV drives, power switches have a limitation associated with switching frequency.
M.I. Masoud, A.S. Abdelkhalik
doaj   +1 more source

Online adaptive SHE algorithm for multilevel converters and implementation with embedded control system

Energy Reports, 2023
Selective harmonic elimination pulse-width modulation (SHE-PWM) method has been widely used in various industrial multilevel converters befitting from low switching frequencies and precise elimination of low-order harmonics.
Junfeng Yang, Qiujiang Liu, Changcheng Li, Yongjun Yu, Lichao Wang   +4 more
doaj   +1 more source

Hardware-in-the-Loop Implementation of Projectile Target Search Algorithm for Selective Harmonic Elimination in a 3-Phase Multilevel Converter

IEEE Access, 2021
Multilevel converters (MLCs) are extensively used in medium- and high-power applications. Currently, MLCs are also used in grid integration of renewable sources of energy. In this paper a three-phase 11-level MLC topology is investigated which requires a
Mohammad Tayyab, Adil Sarwar, Mohd Tariq, Ripon K. Chakrabortty, Michael J. Ryan   +4 more
doaj   +1 more source

Developed AC/DC/AC Converter Structure Based on Shunt Active Filter and Advanced Modulation Approach for Asymmetrical Cascade H-Bridge Multilevel Inverters

IEEE Open Journal of the Industrial Electronics Society, 2023
This article presents a free-harmonic ac/dc/ac converter structure using a novel modulation approach for asymmetrical cascade H-bridge multilevel inverter and, conventional rectifiers combined with a shunt active filter, for grid ...
Nabil Karania, Mohamad Alaaeddin AlalI, Stefano Di Gennaro, Jean-Pierre Barbot   +3 more
doaj   +1 more source

Real-Time Selective Harmonic Mitigation Technique for Power Converters Based on the Exchange Market Algorithm

Energies, 2020
Hand-in-hand with the smart-grid paradigm development, power converters used in high-power applications are facing important challenges related to efficiency and power quality.
Abraham Marquez Alcaide, Jose I. Leon, Marta Laguna, Francisco Gonzalez-Rodriguez, Ramon Portillo, Eduardo Zafra-Ratia, Sergio Vazquez, Leopoldo G. Franquelo, Sertac Bayhan, Haitham Abu-Rub   +9 more
doaj   +1 more source

Red deer algorithm based selective harmonic elimination for renewable energy application with unequal DC sources

Energy Reports, 2022
This study aims to find the optimal switching angles in a cascaded H-bridge multilevel inverter (CHB-MLI) fed by photovoltaic (PV) panels, keeping the output voltage constant regardless of the panel voltage change and eliminating low-order harmonics. For
Yasin Bektaş, Hulusi Karaca
doaj   +1 more source

Pre‐analytical optimization of cell‐free DNA and extracellular vesicle‐derived DNA for mutation detection in liquid biopsies

Molecular Oncology, EarlyView.
Pre‐analytical handling critically determines liquid biopsy performance. This study defines practical best‐practice conditions for cell‐free DNA (cfDNA) and extracellular vesicle–derived DNA (evDNA), showing how processing time, storage conditions, tube type, and plasma input volume affect DNA integrity and mutation detection.
Jonas Dohmen, Lucrezia De Santis, Bret M. Stephens, Vincent Bernard, Jörg C. Kalff, Lara Braun, Phillipp Leyendecker, Johannes Röttgen, Daniel Weissinger, Anirban Maitra, Paola A. Guerrero, Alexander Semaan   +11 more
wiley   +1 more source

Implementing selective harmonic elimination in multilevel inverters with optimal dc source

e-Prime: Advances in Electrical Engineering, Electronics and Energy
In this paper, the bird swarm algorithm (BSA) is proposed for selective harmonic elimination (SHE) implementation in seven-level inverters. The SHE technique reduces switching frequency and, as a result, inverter losses, by using BSA to expedite the ...
Piyush L. Kamani, Rajendra K. Patel, Mansukh K. Kathiria, Devang P. Majithiya, Jay H. Brahmkhatri   +4 more
doaj   +1 more source

Hands‐on protocol for preparing water‐soluble fractions from agri‐food samples for NMR‐based metabolomics analysis

FEBS Open Bio, EarlyView.
This research protocol outlines a workflow for nuclear magnetic resonance (NMR)‐based metabolomics in the agri‐food sector. Using two case studies—strawberry leaves (solid matrix) and wine (liquid matrix)—it details the procedures for sample preparation, data acquisition, and processing.
Andrea Fernández‐Veloso, Jaime Hiniesta‐Valero, Alejandra Guerra‐Castellano, Miguel A. De la Rosa, Irene Díaz‐Moreno   +4 more
wiley   +1 more source

Effect of the supply voltage fluctuations on the efficiency of the technique of shaping the current spectrum generated by VSI traction drive

MATEC Web of Conferences, 2018
The issue of interfering influence of traction vehicles on railway traffic control systems is a serious problem posing a threat to railway traffic safety.
Steczek Marcin
doaj   +1 more source