Results 11 to 20 of about 17,191 (210)
Permanent-Magnet Temperature Distribution Estimation in Permanent-Magnet Synchronous Machines Using Back Electromotive Force Harmonics [PDF]
IEEE Transactions on Industry Applications, 2016 Permanent magnet (PM) temperature measurement/estimation in permanent-magnet synchronous machines (PMSMs) is convenient for both torque control and monitoring purposes. Most of the existing methods provide an averaged/punctual temperature. However, PM temperature distribution is not uniform, which can have unexpected adverse effects such as reduced ...
David Diaz Reigosa +4 more
openaire +3 more sources
IET Electric Power Applications, 2013 In conventional control methods of brushless DC (BLDC) motor drives, back‐electromotive force (EMF) is assumed to be in ideal form and the controller injects rectangular phase current commands to produce the desired constant torque. However, real back‐EMF waveform might not be exactly trapezoidal because of non‐ideality of magnetic material, design ...
Seyed Mohammad Shakouhi +2 more
openaire +3 more sources
Electrical Control of the Transduction Channels' Gating Force in Mechanosensory Hair Cells. [PDF]
Adv Sci (Weinh)The inner ear's hair cells rely on mechanosensitive ion channels to convert vibrations of their hair‐bundle into electrical signals. We show that varying the electrical potential (U) across the sensory epithelium modulates a key determinant of mechanosensitivity—the gating force (FG)—by modulating the gating swing (d), ranging from the size of the ...
Joliot A, Stickel L, Martin P.
europepmc +2 more sources
Design and Simulation Analysis of Stator Slots for Small Power Permanent Magnet Brushless DC Motors
International Transactions on Electrical Energy Systems, 2023 With the development of power electronics technology, permanent magnet brushless DC motors have developed rapidly and are now widely used in electric vehicles, flywheel energy storage, rail transit, and other applications.
Chuanhui Zhu +4 more
doaj +1 more source
Shape Optimization of Discontinuous Armature Arrangement PMLSM for Reduction of Thrust Ripple
Applied Sciences, 2021 The aim of this paper is to present the optimal design process and an optimized model for a discontinuous armature arrangement permanent magnet linear synchronous motor (PMLSM). The stator tooth shapes are optimized to reduce detent force. When the shape
Jun-Hwan Kwon +2 more
doaj +1 more source
IEEE Access, 2023 Variable frequency speed regulation technology is widely used in energy-saving control systems for fan and pump loads. Replacing mechanical adjustment devices such as valves with variable frequency speed regulation can effectively reduce energy ...
Jingyu Ma +4 more
doaj +1 more source
Energies, 2022 Double-sided permanent magnet linear synchronous machine with 120° phase belt toroidal windings (120°-TWDSPMLSM) suffers from large detent force due to the end effect and slot effect.
Jikai Si +4 more
doaj +1 more source
CES Transactions on Electrical Machines and Systems, 2020 In this paper, research into torque ripple production has been undertaken for both the healthy and open-circuit fault- tolerant conditions of a five-phase permanent magnet (PM) machine by using the instantaneous power (I-Power) approach.
Ali Akay, Paul Lefley
doaj +1 more source
Comparison of Halbach magnetized brushless machines based on discrete magnet segments or a single ring magnet [PDF]
, 2002 This paper compares the air-gap field distribution, cogging torque, back-electromotive-force waveform, and efficiency of brushless machines having a Halbach magnetization produced by either discrete magnet segments or a single ring magnet.
Howe, D., Xia, Z.P., Zhu, Z.Q.
core +1 more source
Sensorless flux-weakening control of permanent-magnet brushless machines using third harmonic back EMF [PDF]
, 2004 The sensorless control of brushless machines by detecting the third harmonic back electromotive force is a relatively simple and potentially low-cost technique.
Howe, D., Shen, J.X., Zhu, Z.Q.
core +1 more source