Results 11 to 20 of about 490 (132)

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, Jae-Kyung Kim, Euy-Sik Jeon   +2 more
doaj   +1 more source

Back-EMF Decay Transient Based Identification Method of Rotor Time Constant of Inverter-Fed Induction Motors for Energy Conservation

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, Wenle Song, Xiangyu Hao, Xuyang Zhao, Haisen Zhao   +4 more
doaj   +1 more source

Research on torque ripple under healthy and open-circuit fault-tolerant conditions in a PM multiphase machine

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

Detent Force Minimization of Double-Sided Permanent Magnet Linear Synchronous Machine with 120° Phase Belt Toroidal Windings by Slot-Shift Structure

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, Xiaobao Chai, Rui Nie, Yihua Hu, Yingsheng Li   +4 more
doaj   +1 more source

Sliding Mode Predictive Current Control of Permanent Magnet Synchronous Motor With Cascaded Variable Rate Sliding Mode Speed Controller

IEEE Access, 2022
To solve the problem that the conventional vector control system of permanent magnet synchronous motor is susceptible to motor parameters and load disturbances, a sliding mode predictive current control strategy of permanent magnet synchronous motor with
Limin Hou, Jianhua Ma, Wei Wang
doaj   +1 more source

Novel ABC—Variable Based Closed-Form Analytical Model of Surface Mounted Permanent Magnet AC Machines With Sinusoidal and Non-Sinusoidal Back-EMF

IEEE Access, 2022
This work presents a novel abc-based model applicable to surface-mounted permanent magnet AC (SM-PMAC) machines with sinusoidal and non-sinusoidal back-electromotive force (back-emf).
Saleh O. Edhah, Jamal Y. Alsawalhi, Abdul R. Beig   +2 more
doaj   +1 more source

Sensitivity of a 5-phase brushless DC machine to the 7th harmonic of the back-electromotive force

2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551), 2004
This paper presents a vector control of a 5-phase drive composed of a 5-leg pulse width modulation (PWM) voltage source inverter (VSI) supplying a permanent-magnet brushless DC (BLDC) machine with trapezoidal waveform of the back-electromotive force (EMF).
Semail, Eric, Kestelyn, Xavier, Bouscayrol, Alain   +2 more
openaire   +5 more sources

Speed Estimation of PMSM Based on a Super-Twisting Slide Mode Observer

Machines, 2022
To limit the high-frequency chattering originating from the conventional sliding mode observer in a PMSM sensorless control system of vacuum pumps and reduce the steady-state error caused by the phase lag of the coordinate system on the estimated speed ...
Long Li, Weidong Zhou, Xianting Bi, Xiaoping Shi   +3 more
doaj   +1 more source

Sensorless Control of Permanent Magnet Synchronous Motors Based on Novel Position Angle Extraction With SMO

IEEE Access
This paper presents an improved sensorless controller scheme for a robust permanent magnet synchronous motor. Firstly, a sliding mode observer based on a variable rate approach rate is designed to observe the back electromotive force, enhance the ...
Chen Zhang, Xiao Tang, Kun Xing, Hengrui Zhou   +3 more
doaj   +1 more source

Numerical Simulation and Experimental Validation of a Flux Switching Permanent Magnet Memory Machine

IEEE Access, 2020
Compared with the traditional flux switching permanent magnet machine, flux switching permanent magnet memory (FSPMM) machine has two kinds of permanent magnets, flux regulating windings and complex flux path. In this article, a three phase FSPMM machine
Zhongxian Chen, Yingjie Cui
doaj   +1 more source