Results 61 to 70 of about 9,673 (258)
Mode Recognition and Fault Positioning of Permanent Magnet Demagnetization for PMSM
Energies, 2019 This paper proposes a demagnetization fault detection, mode recognition, magnetic pole positioning, and degree evaluation method for permanent magnet synchronous motors. First, the analytical model of the single-coil no-load back electromotive force (EMF)
Caixia Gao +4 more
doaj +1 more source
Advanced Materials Technologies, EarlyView.The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz +5 more
wiley +1 more source
Theory of Femtosecond Laser-Induced Demagnetization
, 2014 Using ab initio calculations we computed the ultrafast demagnetization that can be achieved by Elliott-Yafet electron-phonon spin-flip scatterings in laser-excited ferromagnets.
Carva, Karel, +10 more
core +1 more source
Dynamic cantilever magnetometry of individual ferromagnetic nanotubes [PDF]
, 2014 In this thesis, we focus on a particular aspect of nanotechnology, namely the understanding of magnetic states in nanometer-scale objects. Describing microscopic magnetization states and reversal is particularly important for the development of magnetic ...
Weber, Dennis Patrick
core +1 more source
Magnetic Textiles: A Review of Materials, Fabrication, Properties, and Applications
Advanced Materials Technologies, EarlyView.Magnetic textiles (M‐textiles) are emerging as a programmable materials platform that merges magnetic matter with hierarchical textile structures. This article consolidates magnetic material classes, textile architectures, and fabrication and magnetization strategies, revealing structure–property–function relationships that govern magneto‐mechanical ...
Li Ke +3 more
wiley +1 more source
Archives of Electrical Engineering, 2020 This paper deals with the finite element analysis of the demagnetization process of the line start permanent magnet synchronous motor. Special attention has been paid to demagnetization risk assessment after resynchronization during a short-term supply ...
Tomasz Zawilak
doaj +1 more source
Strong‐Magnetic Flexible Composites for Magnetically Responsive Soft Robots
Advanced Robotics Research, EarlyView.This perspective provides an overview of the performance mechanisms, preparation methods, and applications of strong magnetic flexible composite materials in soft actuators (such as gripping, movement, and sensing), and further explores current opportunities and challenges.
Wenwen Li +4 more
wiley +1 more source
On the demagnetizing energy and demagnetizing factor of a multidomain ferromagnetic cube
Geophysical Research Letters, 1983 The equations Ed = ½NJ² + const for demagnetizing energy and Hd = −NJ for average internal demagnetizing field (J is magnetization; N is demagnetizing factor, assumed constant) are central to multidomain (MD) theories of thermoremanence (TRM) and hysteresis.
openaire +1 more source
Low-temperature demagnetization and ice-pressure demagnetization in magnetite and haematite [PDF]
Geophysical Journal International, 1994 SUMMARY Low-temperature demagnetization (LTD) is confirmed as an effective method of removing soft (low coercivity) components of remanence in magnetite-bearing specimens by passing the magnetite through its low-temperature transition (?130 K). Haematite has its low-temperature transition at approximately 258 K.
openaire +1 more source
Post-Demagnetization Performance Assessment for Interior Permanent Magnet AC Machines [PDF]
, 2016 This paper assesses the post-demagnetization performance of interior permanent magnet (IPM) ac machines by employing the more accurate recoil line approach based on a 2-D transient finite-element analysis (FEA).
Nair, S.S., Wang, J., Patel, V.I.
core +1 more source