Results 111 to 120 of about 65,441 (342)
The reinvigoration of the Southern Ocean carbon sink [PDF]
, 2015 Several studies have suggested that the carbon sink in the Southern Ocean—the ocean’s strongest region for the uptake of anthropogenic CO2 —has weakened in recent decades.
Bronte Tilbrook +12 more
core +3 more sources
Improved deep flux-weakening control techniques for IPMSM drives
, 2018 This thesis identified several problems that exist in deep flux-weakening control of the Interior Permanent Magnet Synchronous Machine (IPMSM) for which the characteristic current is well within the current limit circle. It then presents several important improvements of the deep flux-weakening control techniques for such an IPMSM drive.
openaire +2 more sources
Advanced Functional Materials, EarlyView.This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous
Mingfeng Xu +5 more
wiley +1 more source
A novel rotor design for a hybrid excited synchronous machine
Archives of Electrical Engineering, 2017 The paper presents three novel rotor design concepts for a three-phase electric controlled permanent magnet synchronous machine (ECPMS-machine) with hybrid excitation.
Paplicki Piotr
doaj +1 more source
Flux Weakening Optimal Control of the Three-Phase Induction Motor
The Scientific Bulletin of Electrical Engineering Faculty, 2016 Abstract This paper illustrates the importance of control on energy saving opportunity in electrical drives systems. The paper’s objective is to develop an optimal control law for a variable flux drive systems with induction machines. The optimal control provides dynamic regimes with minimum input energy and performs the minimization of ...
C. R. Dache +5 more
openaire +1 more source
Stretching the Printability Metric in Direct‐Ink Writing with Highly Extensible Yield‐Stress Fluids
Advanced Functional Materials, EarlyView.This study introduces “drawability” as a new metric for assessing printability in direct‐ink writing, focusing on gap‐spanning performance and speed robustness. By designing yield‐stress fluids with high extensibility, we demonstrate that extensional strain‐to‐break significantly enhances printability.
Chaimongkol Saengow +9 more
wiley +1 more source
Hybrid excited permanent magnet machines for electric and hybrid electric vehicles
CES Transactions on Electrical Machines and Systems, 2019 This paper reviews various hybrid excited (HE) machines from the perspective of location of PM and DC excitation, series/parallel connection of PM and DC excited magnetic fields, and 2D/3D magnetic fields, respectively.
Z. Q. Zhu, S. Cai
doaj +1 more source
Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions
Advanced Functional Materials, EarlyView.This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian +7 more
wiley +1 more source
MTPV for Continuous Flux-Weakening Strategy Control Law for IPMSM
2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2018 Synchronous motors with Interior Permanent Magnets (IPMSM) are particularly effective for operation at high speed due to their high power density. However the speeds generate large electromagnetic forces and it is necessary to set up a flux-weakening.
Sepulchre, Léopold +2 more
openaire +1 more source
Advanced Functional Materials, EarlyView.Bio‐based and (semi‐)synthetic zwitterion‐modified novel materials and fully synthetic next‐generation alternatives show the importance of material design for different biomedical applications. The zwitterionic character affects the physiochemical behavior of the material and deepens the understanding of chemical interaction mechanisms within the ...
Theresa M. Lutz +3 more
wiley +1 more source