Results 21 to 30 of about 1,310 (242)
The Journal of Engineering, 2019 Here, static and dynamic (rotating) misalignments between the low-speed rotor (LSR) and the stator of axial flux magnetically geared machines are studied with the aid of 3-D finite element analysis (FEA).
Mohammed F. Hamad Khatab +3 more
doaj +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
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
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
Energies, 2021 About ten hydroelectric power plants realized from 1970 to 1990 in Romania are confronted with stator overheating. The developed mathematical model analyzes the voltage stability based on modal analysis of the Jacobian matrix, identifying the hazardous ...
Victorita Radulescu
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background The HIT network was established in 2000 to create a population‐based structure aiming to improve survival rates and reduce late effects for children with central nervous system (CNS) tumors by conducting comprehensive clinical trials.
Stefan Rutkowski +59 more
wiley +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Introduction Characterizing stressful events reported by childhood cancer survivors experienced throughout the lifespan may help improve trauma‐informed care relevant to the survivor experience. Methods Participants included 2552 survivors (54% female; 34 years of age) and 469 community controls (62% female; 33 years of age) from the St.
Megan E. Ware +13 more
wiley +1 more source
Arbitrary d–q current sharing in three-phase winding sets of multi-phase machines
The Journal of Engineering, 2019 This study proposes a technique for arbitrary current sharing between winding sets of any multiple three-phase machine by using a decoupled control in two-dimensional orthogonal vector space decomposition subspaces.
Ivan Zoric, Martin Jones, Emil Levi
doaj +1 more source