Results 61 to 70 of about 64,856 (310)
Flux Weakening Strategy Optimization for Five-Phase PM Machine with Concentrated Windings [PDF]
, 2012 The paper applies an Efficient Global Optimization method (EGO) to improve the efficiency, in flux weakening region, of a given 5-phase Permanent Magnet (PM) machine. An optimal control for the four independent currents is thus defined.
ASLAN, Bassel +3 more
core +4 more sources
Lessons Learned From a Delayed‐Start Trial of Modafinil for Freezing of Gait in Parkinson's Disease
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Freezing of gait (FOG) in people with Parkinson's disease (PwPD) is debilitating and has limited treatments. Modafinil modulates beta/gamma band activity in the pedunculopontine nucleus (PPN), like PPN deep brain stimulation. We therefore tested the hypothesis that Modafinil would improve FOG in PwPD.
Tuhin Virmani +8 more
wiley +1 more source
High Speed PMSM Anti-saturation Regulation Method Based on Hybrid Flux Weakening Technology [PDF]
E3S Web of Conferences, 2019 For traditional permanent magnet synchronous motor (PMSM) flux weakening method, it is easy to cause voltage command saturation and the system lose control.
Li Na, Cao Xiaodong
doaj +1 more source
High speed operation design considerations for fractional slot axial flux PMSM [PDF]
, 2015 This paper discusses intensively the design considerations for the fractional slot axial flux permanent magnet synchronous (AFPMSMs) in order to work efficiently in the constant power speed range, also known as the field weakening (FW) region.
Hemeida, Ahmed +2 more
core +2 more sources
Post-processing-based Flux-weakening Control of Variable Flux Reluctance Machines
2024 IEEE 21st Biennial Conference on Electromagnetic Field Computation (CEFC)This paper introduces a novel post-processing-based flux-weakening control method for variable flux reluctance machines. The proposed method achieves high-efficiency operation at elevated speeds by determining the optimal values for both ac- and de-field currents together with the commutation angle.
Ceylan, Doğa +2 more
openaire +2 more sources
Advancing Age Modulates Associations Between Cognitive Impairment and Brain Volumes in Early MS
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Introduction Cognitive impairment is common in multiple sclerosis (MS), but manifestations following the first demyelinating event are relatively unexplored. We investigated cross‐sectional associations between magnetic resonance imaging (MRI)–derived brain volumes and the presence of cognitive impairment outcomes five years after the first ...
Piriyankan Ananthavarathan +14 more
wiley +1 more source
Performance comparison between Surface Mounted and Interior PM motor drives for Electric Vehicle application [PDF]
, 2012 Electric Vehicles make use of permanent magnet synchronous traction motors for their high torque density and efficiency. A comparison between interior permanent magnet (IPM) and surface mounted permanent magnet (SPM) motors is carried out, in terms of ...
Boazzo, Barbara +3 more
core +1 more source
Flux-Weakening Control for IPMSM Employing Model Order Reduction
2018 XIII International Conference on Electrical Machines (ICEM), 2018 The variation of magnetic parameters due to the magnetic saturation and cross coupling can affect the efficiency and the stability of the control system in electrical machines, especially at high-speed operation. This paper presents an approach independent of the magnetic model parameters to control synchronous motors at the flux-weakening region.
Far, Mehrnaz Farzam +5 more
openaire +4 more sources
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective This study aimed to investigate the immunological response to influenza vaccination, the incidence and severity of influenza infection, and the side effects of the vaccination in patients with ischemic stroke. Methods This prospective observational study was conducted between 2023 and 2024 at Ramathibodi Hospital.
Achiraya Pakngao +5 more
wiley +1 more source
Comparison and Analysis of High-speed Flux Weakening Control for PMSM
机车电传动, 2016 In order to explore the flux weakening control principle of PMSM and enhance its performance, three control technologies were compared and analyzed, emphasis on high-speed flux weakening control method and performance, as well as the simulation and ...
ZHENG Hanfeng +3 more
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