A flexible flux adjustable variable flux leakage starter‐generator for helicopters
Sign Up to like & getrecommendations! Published in 2024 at "IET Electric Power Applications"
DOI: 10.1049/elp2.12465
Abstract: A variable flux leakage starter‐generator structure designed for helicopters is proposed. The research focuses on investigating the current distribution mechanism of the d‐q axis to determine the feasibility of incorporating variable flux leakage (FL) in… read more here.
Keywords: starter generator; variable flux; flux leakage;
Comparative study of hybrid-PM variable-flux machines with different series PM configurations
Sign Up to like & getrecommendations! Published in 2019 at "AIP Advances"
DOI: 10.1063/1.5129828
Abstract: Aiming at extending the operating speed range and increasing the machine efficiency, three series-configuration hybrid-permanent-magnet variable-flux machines (HPM-VFMs) with both low and high coercive-force magnets are proposed. The magnetization characteristics of the machine with different… read more here.
Keywords: machine; range; magnet; speed ... See more keywords
Investigation of the over-load unintentional remagnetization effect in series hybrid magnet variable flux memory machine
Sign Up to like & getrecommendations! Published in 2024 at "AIP Advances"
DOI: 10.1063/9.0000744
Abstract: Variable flux memory machines (VFMMs) have become a research hotspot due to their adjustable air-gap flux with the employment of low coercive force (LCF) permanent magnets (PMs). Series hybrid magnet VFMMs (SHM-VFMMs) utilizing series-magnetic-circuit high… read more here.
Keywords: variable flux; flux memory; hybrid magnet; series hybrid ... See more keywords
A Novel Variable Flux Spoke Type Permanent Magnet Motor With Swiveling Magnetization for Electric Vehicles
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3182115
Abstract: This article proposes a novel variable-flux spoke-type permanent magnet synchronous motor (VFS-PMSM), whose air gap flux density can be adjusted by “swiveling” magnetic pole directions in permanent magnet (PM). This is distinctive from conventional methods… read more here.
Keywords: magnet; flux; coercivity; motor ... See more keywords
A Synthetic Frozen Permeability Method for Torque Separation in Hybrid PM Variable-Flux Machines
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Applied Superconductivity"
DOI: 10.1109/tasc.2018.2793202
Abstract: This paper proposes a synthetic frozen permeability method (SFPM) to separate torque components of a hybrid permanent magnet variable-flux machine (HPM-VFM). The machine in this study employs an Alnico magnet as a variable permanent magnet… read more here.
Keywords: variable flux; frozen permeability; permeability method; torque ... See more keywords
An Improved Variable Flux Memory Machine Topology With Multi-Stage Magnetization Strategy
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Transactions on Applied Superconductivity"
DOI: 10.1109/tasc.2024.3420309
Abstract: Variable Flux Memory Machine (VFMM) is capable of regulating the air-gap flux density flexibly by applying current pulses. This paper proposes an improved Y-structure VFMM topology, which features wide flux-regulation range and excellent on-load Demagnetization… read more here.
Keywords: variable flux; flux memory; magnetization strategy; magnetization ... See more keywords
A Novel Variable Flux Memory Machine With Separated Series--Parallel PM Structure
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2022.3174293
Abstract: Variable flux memory machine (VFMM) with hybrid magnetic circuit (HMC) is regarded as a potent solution for electric vehicles owing to its flexible flux control and fine accidental demagnetization withstand capability. However, existing HMC-VFMMs generally… read more here.
Keywords: topology; series parallel; flux memory; memory machine ... See more keywords
Analysis and Reduction of Unipolar Leakage Flux in Series Hybrid Permanent-Magnet Variable Flux Memory Machines
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Magnetics"
DOI: 10.1109/tmag.2017.2706764
Abstract: A series hybrid variable flux memory (VFM) machine employing two kinds of permanent magnets (PMs) on alternate rotor poles is investigated. This VFM machine features controllable PM flux and thus good flux-weakening capability, as well… read more here.
Keywords: leakage flux; series hybrid; series; flux memory ... See more keywords
Torque Ripple Reduction for 12-Stator/10-Rotor-Pole Variable Flux Reluctance Machines by Rotor Skewing or Rotor Teeth Non-Uniformity
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Magnetics"
DOI: 10.1109/tmag.2017.2712609
Abstract: Variable flux reluctance machines (VFRMs) are interesting candidates to substitute permanent-magnet synchronous machines in many applications. However, they suffer from large torque ripple. In this paper two methods, stepped rotor skewing and rotor teeth non-uniformity,… read more here.
Keywords: flux reluctance; rotor skewing; torque ripple; rotor ... See more keywords
Analysis of a Novel Hybrid-PM Variable-Flux Machine Using New Magnet Material CeFeB
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Magnetics"
DOI: 10.1109/tmag.2019.2894700
Abstract: Electric vehicle (EV) is a promising technology for saving fossil energy and reducing pollution. Hybrid-permanent-magnet (PM) variable-flux machine is a competitive candidate for EV propulsion since it has wide speed range and high efficiency at… read more here.
Keywords: novel hybrid; variable flux; machine; hybrid variable ... See more keywords
A High-Torque-Density Variable-Flux Memory Machine Utilizing Novel (Ce, Nd)-Fe-B Magnets
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Magnetics"
DOI: 10.1109/tmag.2020.3006272
Abstract: Variable-flux memory machines (VFMMs) are considered as promising candidate in adjustable speed drive applications. However, the exploration of VFMMs with acceptable magnetization state (MS) regulating current and high-torque density is still a challenging issue. This… read more here.
Keywords: flux memory; torque density; variable flux; high torque ... See more keywords