Results 31 to 40 of about 9,602,908 (345)
A novel dual-stator hybrid excited synchronous wind generator [PDF]
, 2009 This paper presents a novel dual-stator hybrid excited synchronous wind generator and describes its structural features and operation principle. The no-load magnetic fields with different field currents are computed by 3-D finite-element method.
Chengfeng, Y. +5 more
core +1 more source
Novel partitioned stator hybrid excited machines with magnets on slot openings
The Journal of Engineering, 2019 In this study, a novel partitioned stator hybrid excited machine is proposed, in which the excitation sources including both permanent magnets (PMs) and field windings are allocated on the secondary stator that is separated from the original stator ...
Hao Hua, Z.Q. Zhu
doaj +1 more source
A tip clearance prediction model for multistage rotors and stators in aero-engines
, 2020 Tip clearances of multistage rotors and stators greatly affect aero-engines’ aerodynamic efficiency, stability and safety. The inevitable machining and assembly errors, as well as the complicated error propagation mechanism, cause overproof or non ...
Huibin Sun +5 more
semanticscholar +1 more source
Mass reduction of superconducting power generators for large wind turbines
The Journal of Engineering, 2019 High temperature superconductors (HTS) enable very compact electric machines with high power density. Here, an HTS power generator based on authors’ previous double claw pole design is studied and improved.
Kevin Kails +3 more
doaj +1 more source
The Journal of Engineering, 2019 This study proposes a fault-tolerant matrix-converter-controlled IPMSM-drive system, in which a predictive speed-loop controller and a predictive current-loop controller are implemented to improve its dynamic responses, including transient responses and ...
Tian-Hua Liu, Shuo-Feng Chang
doaj +1 more source
A Molecular-Rotor Device for Nonvolatile High-Density Memory Applications [PDF]
, 2010 A novel memory device based on an electrically driven molecular rotor was fabricated and demonstrated to have bistable switching effects. The device showed an on/off ratio of approximately 10^4, a read window of about 2.5 V, and retention performance of
Benitez, Diego +7 more
core +1 more source
Sliding observer-based demagnetisation fault-tolerant control in permanent magnet synchronous motors
The Journal of Engineering, 2017 This study proposes a fault-tolerant control method for permanent magnet synchronous motors (PMSMs) based on the active flux linkage concept, which addresses permanent magnet (PM) demagnetisation faults in PMSMs. First, a mathematical model for a PMSM is
Changfan Zhang +3 more
doaj +1 more source
Study of the assembly, build and test of a linear transverse flux machine
The Journal of Engineering, 2019 This study discusses the topology development of a cylindrical transverse flux linear machine for use with a free piston engine. Despite its three-dimensional flux path, the stator of this topology can be made from regular laminated components and only ...
Junnan Wang +3 more
doaj +1 more source
Stochastic post-processing calculation of iron losses – application to a PMSM [PDF]
, 2013 To take account of the uncertainties introduced on the magnetic properties during the manufacturing process, the present work aims to focus on the stochastic modelling of iron losses in electrical machine stators.
BENABOU, Abdelkader +4 more
core +4 more sources
Molecular Microbiology, 2019 The bacterial flagellar motor powers the rotation that propels the swimming bacteria. Rotational torque is generated by harnessing the flow of ions through ion channels known as stators which couple the energy from the ion gradient across the inner ...
T. Ishida +5 more
semanticscholar +1 more source