Results 11 to 20 of about 7,856 (197)

Classifying Superconductivity in ThH-ThD Superhydrides [PDF]

open access: yesMaterials Research Express, 2019
Satterthwaite and Toepke (1970 Phys. Rev. Lett. 25 741) discovered that Th4H15-Th4D15 superhydrides exhibit superconductivity and have no isotope effect. The latter is fundamental contradiction with the concept of electron-phonon mediated superconductivity of Bardeen-Cooper-Schrieffer (BCS) theory.
E F Talantsev, R C Mataira
openaire   +5 more sources

Biomimetics: teaching the tools of the trade

open access: yesFEBS Open Bio, 2020
Biomimetics is a known innovation paradigm of the twenty‐first century with significant impact on science, society, economy, and challenges of sustainability.
Kristina Wanieck   +3 more
doaj   +1 more source

Boost Converter Based 3-phase AC-AC Active Tracking Voltage Regulator Controlled by a Robust Hybrid Control Method

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
In this study, a switch-mode three-phase active tracking AC-AC voltage regulator based on the boost converter is proposed with a moderate number of active and passive elements used in the topology.
Felix Hımmelstoss, Faruk Yalçın
doaj   +1 more source

Performance Analysis of the Slip Power Recovery Induction Motor Drive System Under Unbalance Supply Voltages

open access: yesAdvances in Electrical and Electronic Engineering, 2021
This paper develops a mathematical model for analyzing the steady-state performance of the Slip Power Recovery Induction Motor Drive System (SPRIMDS) which operates under unbalance supply voltage conditions.
Hilmi Fadhil Ameen, Fadhil Toufick Aula
doaj   +1 more source

Performance Analysis of Three Phase Cascaded Multilevel Inverter (CMLI) for Induction Motor Drives [PDF]

open access: yesEngineering and Technology Journal, 2013
Traditional high-frequency pulse width modulation (PWM) inverters for motor drives have several problems associated with their high switching frequency which produces high voltage change (dv/dt) rates.
Shatha k. Baqir
doaj   +1 more source

Transanal Hemorrhoidal Dearterialization With Doppler Arterial Identification Versus Classic Hemorrhoidectomy: A Retrospective Analysis of 270 Patients [PDF]

open access: yesAnnals of Coloproctology, 2019
Purpose Despite the minimally invasive nature of transanal hemorrhoidal dearterialization (THD) with Doppler arterial identification procedures, hemorrhoidectomy is still considered the gold standard procedure for hemorrhoidal disease.
Vincenzo Consalvo   +2 more
doaj   +1 more source

Two-Stage Control for Small-Signal Modeling and Power Conditioning of Grid-‎Connected Quasi-Z-Source Inverter with LCL Filter for Photovoltaic ‎Generation ‎ [PDF]

open access: yesJournal of Operation and Automation in Power Engineering, 2021
Grid-connected inverter-based photovoltaic (PV) systems play an important role in Distributed Power Generation (DPG). For this application, quasi impedance source inverter is very suitable due to its ability to increase or decrease the output voltage of ...
F. Aalizadeh   +3 more
doaj   +1 more source

Two-level DPC strategy based on FNN algorithm of DFIG-DRWT systems using two-level hysteresis controllers for reactive and active powers [PDF]

open access: yesRenewable Energy Research and Applications, 2021
In this paper, a novel switching table (ST) of the twelve sectors direct power command (DPC) strategy of doubly-fed induction generator (DFIG) based dual rotor wind power (DRWP) is proposed using two-level hysteresis controllers for reactive and active ...
H. Benbouhenni
doaj   +1 more source

Power flow analysis and control of distributed FACTS devices in power system [PDF]

open access: yesArchives of Electrical Engineering, 2018
The deployment of a distributed power-flow controller (DPFC) in a single-machine infinite-bus power system with two parallel transmission lines are considered for the analysis in this paper.
Vikash Anan, Sanjeev Kumar Mallik
doaj   +1 more source

Selective harmonic elimination pulse width modulation based hybrid multilevel inverter topology with reduced components

open access: yesIET Power Electronics, EarlyView., 2022
Abstract In this paper, a reduced switch count single‐phase hybrid multilevel inverter (MLI) is presented. Level generation unit (LGU) and polarity changing unit (PCU) are the two parts of the presented topology which are connected in series. Other advantages of the proposed topology include the reduced switch count, higher level generation with ...
Mohammad Wasiq   +6 more
wiley   +1 more source

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