Results 81 to 90 of about 1,643,253 (303)
IEEE Access, 2019 This paper investigates digital implementation issues on high-speed permanent magnet (PM) machine drives. The machine operating speed is designed beyond 30krpm where the ratio of controller sample frequency over rotor fsample operating frequency fe is ...
Shih-Chin Yang +4 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm +5 more
wiley +1 more source
On extended Kalman filters with augmented state vectors for the stator flux estimation in SPMSMs [PDF]
, 2010 The demand for highly dynamic electrical drives, characterized by high quality torque control, in a wide variety of applications has grown tremendously during the past decades.
Boel, René +2 more
core +2 more sources
Advanced Engineering Materials, EarlyView.The work demonstrates that strategic wall‐thickness grading in diamond triply periodic minimal surface lattices enables precise tuning of deformation and failure behavior under compression. Different gradation patterns guide how and where the structure collapses, improving energy absorption or promoting controlled brittle failure.
Giovanni Rizza +3 more
wiley +1 more source
Motor models for field oriented control
, 1992 Tese de mestr.. Dissertation submitted for obtain the degree of Master of Electronic and Computer Engineering at the University of Porto, Faculty of Engineering. Faculdade de Engenharia. Universidade do Porto. 1992
openaire +2 more sources
A Full Order Sensorless Control Adaptive Observer for Doubly-Fed Induction Generator [PDF]
, 2019 This paper presents a sensorless control for a Doubly Fed Induction Generator (DFIG) in the context of grid-connected turbine-based wind generation systems.
Brando, Gianluca +2 more
core +1 more source
Advanced Functional Materials, EarlyView.A novel phthalocyanine (PC)‐based metal–organic framework (MOFs) is synthesized using ditopic PC linkers obtained through regioselective statistical condensation. The resulting MOF exhibits significant improvements in electronic absorption, thereby enhancing the material's performance in light harvesting and energy conversion.
Lukas S. Langer +12 more
wiley +1 more source
Photoswitchable Conductive Metal–Organic Frameworks
Advanced Functional Materials, EarlyView.A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu +5 more
wiley +1 more source
Transient Energy Efficiency Analysis of Field Oriented Induction Machines
IEEE Access, 2017 An open loop control law for stator d- and q-axis currents in a rotor field oriented induction machine are derived in the form of analytical functions of time and used to study how energy losses during speed transients can be minimized.
Siby Jose Plathottam, Hossein Salehfar
doaj +1 more source
All-electrical time-resolved spin generation and spin manipulation in n-InGaAs
, 2013 We demonstrate all-electrical spin generation and subsequent manipulation by two successive electric field pulses in an n-InGaAs heterostructure in a time-resolved experiment at zero external magnetic field.
Beschoten, B. +4 more
core +1 more source