Results 71 to 80 of about 82,831 (293)

Optimum design and research on novel vehicle hybrid excitation synchronous generator

MATEC Web of Conferences, 2017
Hybrid excitation is an organic combination of permanent magnet excitation and electric excitation. Hybrid excitation synchronous generator (HESG) both has the advantages of light quality, less losses and high efficiency like permanent magnet generator ...
Liu Zhong-Shu
doaj   +1 more source

Chronobiology of Cancer: How Aging Fuels Oncogenesis at the Molecular Level

Aging and Cancer, EarlyView.
This graphical abstract illustrates the key biological pathways linking aging with cancer development and progression. In the upper left, cumulative exposure to ultraviolet radiation, toxins, and reactive oxygen species (ROS) causes DNA damage and genomic instability, whereas age‐related decline in repair mechanisms, such as ATM/ATR, BER, and NER ...
Anu Singh, Aroonima Misra, Sufian Zaheer
wiley   +1 more source

Sandwich-Type Multi-Degree-of-Freedom Ultrasonic Motor With Hybrid Excitation

IEEE Access, 2016
A sandwich-type multi-degree-of-freedom (MDOF) ultrasonic motor with hybrid excitation is proposed in this paper. The motor adopts pair combination of three resonance modes to drive the sphere rotations around three coordinate axes.
Xiaohui Yang, Yingxiang Liu, Weishan Chen, Junkao Liu   +3 more
doaj   +1 more source

Magnetic equivalent circuit model for unipolar hybrid excitation synchronous machine [PDF]

, 2015
Lately, there has been increased interest in hybrid excitation electrical machines. Hybrid excitation is a construction that combines permanent magnet excitation with wound field excitation.
Przyborowski, W., Kupiec, E., Przyborowski Włodzimierz, Kupiec Emil   +3 more
core   +1 more source

Light‐Assisted 3D Printing Techniques and Photocrosslinking Strategies: Recent Advances in Musculoskeletal Tissue Engineering

Advanced Engineering Materials, EarlyView.
In this review, the current state of light‐assisted 3D printing as it pertains to engineering musculoskeletal tissues including bone, cartilage, skeletal muscle, tendon, and ligaments is summarized. Common printing techniques, photoreactive materials, and study design choices are compiled and reviewed.
Meagan Morgan, Bin Zhang, Roger Narayan
wiley   +1 more source

Hybrid-excited variable reluctance machines [PDF]

2015 Intl Aegean Conference on Electrical Machines & Power Electronics (ACEMP), 2015 Intl Conference on Optimization of Electrical & Electronic Equipment (OPTIM) & 2015 Intl Symposium on Advanced Electromechanical Motion Systems (ELECTROMOTION), 2015
In this paper, a study on the energy conversion and the consequent torque production mechanism in hybrid excited variable reluctance machines (HEVRMs) is presented. The derived torque expressions of single-phase HEVRMs with different switching strategies show a similarity to that of DC machines (DCMs), wound-field synchronous machines (WFSMs), or ...
Lomonova, E.A., Tang, Y., Paulides, J.J.H.   +2 more
openaire   +2 more sources

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

Advanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora, Tales V. Lisbôa, Axel Spickenheuer, Rogério J. Marczak, Jakson M. Vassoler   +4 more
wiley   +1 more source

Analysis of an Axial Field Hybrid Excitation Synchronous Generator

Energies
An axial field hybrid excitation synchronous generator (AF-HESG) is proposed for an independent power supply system, and its electromagnetic performance is studied in this paper.
Junyue Yu, Shushu Zhu, Chuang Liu
doaj   +1 more source

Speed control of hybrid excitation permanent magnet motor [PDF]

openthe aim of this thesis is to study the hybrid excitation permanent magnet motor and then design a suitable control strategy. In particular, with the presence of the excitation windings along side with permanent magnets, it is possibile to vary the ...
PASCARIELLO, FILOMENA
core  

Coordinated optical and radar observations of ionospheric pumping for a frequency pass through the second electron gyroharmonic at HAARP [PDF]

, 2007
On 4 February 2005, the High-frequency Active Auroral Research Program (HAARP) facility was operated in O and X mode while pointing into the magnetic zenith to produce artificial optical emissions in the ionospheric F layer. The pump frequency was set to
Senior, Andrew, Pedersen, T., Kosch, Mike J., Bristow, B., Mishin, E., Watkins, B., Hughes, J., Oyama, S.   +7 more
core