Results 21 to 30 of about 63,847 (307)

Direct torque control for dual three-phase induction motor drives [PDF]

open access: yes, 2004
A direct torque control (DTC) strategy for dual three-phase induction motor drives is discussed in this paper. The induction machine has two sets of stator three-phase windings spatially shifted by 30 electrical degrees.
Bojoi, R.   +4 more
core   +1 more source

Comparison of Feedback Field-Weakening Techniques for Synchronous Machines with Permanent Magnets

open access: yesVehicles, 2023
In recent decades the market share of electrical cars has increased significantly, which has paved the way for the development of automotive electronics.
Anton Dianov
doaj   +1 more source

Five-Axis Machine Tool Condition Monitoring Using dSPACE Real-Time System [PDF]

open access: yes, 2012
This paper presents the design, development and SIMULINK implementation of the lumped parameter model of C-axis drive from GEISS five-axis CNC machine tool.
Fletcher, Simon   +4 more
core   +1 more source

Integration of FOC With DFVC for Interior Permanent Magnet Synchronous Machine Drives

open access: yesIEEE Access, 2020
In this paper, the drawbacks of the conventional f-t frame based maximum torque per ampere (MTPA) control schemes are analyzed and mathematically proved.
Tianfu Sun   +3 more
doaj   +1 more source

Deadbeat predictive current control of PMSM drives with an adaptive flux‐weakening controller

open access: yesIET Power Electronics, 2022
In practical application, the motor speed may need to be greater than the rated speed, so field‐weakening control is required. However, the conventional flux‐weakening control requires much tuning work, because multiple PI controllers are used.
Shengwen Fan   +4 more
doaj   +1 more source

A Case Study of Cyclic Top Coal Weakening Process Based on Highly Tough Coal Seam with Partings

open access: yesShock and Vibration, 2021
The top coal weakening process is an effective mean to increase the coal output, reduce the coal resource waste, and promote the sustainable development in a mine.
Zhaopeng Wu   +6 more
doaj   +1 more source

Characteristic Differences of Wind-Blown Sand Flow Field of Expressway Bridge and Subgrade and Their Implications on Expressway Design

open access: yesSensors, 2022
Bridges and subgrades are the main route forms for expressways. The ideal form for passing through sandy areas remains unclear. This study aims to understand the differences in the influence of expressway bridges and subgrades on the near-surface blown ...
Shengbo Xie, Xian Zhang, Yingjun Pang
doaj   +1 more source

Stratification of sunspot umbral dots from inversion of Stokes profiles recorded by Hinode

open access: yes, 2008
This work aims to constrain the physical nature of umbral dots (UDs) using high-resolution spectropolarimetry. Full Stokes spectra recorded by the spectropolarimeter on Hinode of 51 UDs in a sunspot close to the disk center are analyzed.
A. Lagg   +16 more
core   +1 more source

PM-Assisted Synchronous Reluctance Machine Flux Weakening Control for EV and HEV Applications [PDF]

open access: yes, 2017
In this manuscript, a novel robust torque control strategy for Permanent Magnet Assisted Synchronous Reluctance Machine drives applied to electric vehicles and hybrid electric vehicles is presented.
Arias, Antoni   +7 more
core   +4 more sources

A Permanent Magnet Synchronous Machine with Mechanically Controlled Excitation Flux

open access: yesEnergies
This paper presents the initial design of a permanent magnet synchronous machine with mechanically controlled excitation flux using the linear sliding motion of an additional excitation source placed inside a hollow shaft in the rotor. A new rotor design
Piotr Paplicki
doaj   +1 more source

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