Results 181 to 190 of about 2,679 (216)

Model Reference Adaptive Back-Electromotive-Force Estimators for Sensorless Control of Grid-Connected DFIGs

IEEE Transactions on Industry Applications, 2018
A back-electromotive force (EMF) model reference adaptive system based sensorless control scheme is proposed for a grid-connected doubly fed induction generator (DFIG). Based on the stator-side and the rotor-side dynamic models of the DFIG, both the reference model and the adaptive model of the proposed back-EMF based DFIG are investigated.
Lin-Yu Lu, Nelson Fabian Avila, Chia-Chi Chu, Tzu-Wei Yeh   +3 more
openaire   +1 more source

Study on Rotor Position of Sensorless Brushless DC Motors through Back Electromotive Force Detection

2010 International Conference on E-Product E-Service and E-Entertainment, 2010
Sensorless Brushless DC motors have been a research focus home and abroad, because their characteristics of small volume, high reliability, strong anti-interference and the ability to overcome inaccurate commutation caused by mechanical installation. This article will carry on a research on the operation principles and performance characteristics of ...
Chunfeng Li, Weibo Yu, Wusheng Tang
openaire   +1 more source

Noninvasive detection of unevenly magnetized permanent magnet of a brushless dc motor by characterizing back electromotive force

Journal of Applied Physics, 2009
Uneven magnetization of permanent magnets (PMs) is one of the major sources of unbalanced magnetic force and torque ripple, which excite a brushless dc (BLDC) motor. This paper investigates the frequency contents of the back electromotive force (BEMF) due to the unevenly magnetized PMs in a BLDC motor.
C. I. Lee, G. H. Jang
openaire   +1 more source

A Current Optimization Strategy for Torque Ripple Reduction of Brushless DC Motor with Nonideal Back Electromotive Force

2019 22nd International Conference on Electrical Machines and Systems (ICEMS), 2019
This paper presents a study of the torque component under the d-axis and q-axis of brushless DC motor with nonideal back electromotive force. Based on the improved torque harmonic expressions, the main ripple contributors can be found and are also used as the basis of designing the phase current.
Guidan Li, Jiaqi Wang, Bin Li, Tianqi Zhang   +3 more
openaire   +1 more source

A Study on Correcting the Nonlinearity Between Stack Length and Back Electromotive Force in Spoke Type Ferrite Magnet Motors

IEEE Transactions on Magnetics, 2017
The accurate estimation of the performance change according to variations in stack length of motors is important in related industries. A permanent magnet (PM) motor usually represents a characteristic in which its back electromotive force (EMF) constant (K e ) is linearly proportional to stack length.
Sung Gu Lee, Ju Lee, Won-Ho Kim
openaire   +1 more source

DC Brushless Motor Speed Controller Design using Back Electromotive Force

2022 IEEE Engineering International Research Conference (EIRCON), 2022
Javier Martin Seminario Gastelo, Edilberto Horacio Vasquez Diaz   +1 more
openaire   +1 more source

Comparison of Nonlinear Observers for the Back Electromotive Force of the Main Exciter of the Brushless Synchronous Starter/Generator

2022 25th International Conference on Electrical Machines and Systems (ICEMS), 2022
Shuai Mao, Chongzhao Ma, Xiaoke Zhang, Weiguo Liu   +3 more
openaire   +1 more source

Encoderless robot motion control using vision sensor and back electromotive force

2014 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2014
Akihiro Kawamura, Miyako Tachibana, Soichiro Yamate, Sadao Kawamura   +3 more
openaire   +1 more source

Optical electromotive force with Heisenberg spherical ferromagnetic spin

Optik, 2021
Talat Körpinar
exaly  

Comparison of battery electromotive-force measurement and modelling approaches

Journal of Energy Storage, 2022
F S J Hoekstra, L H J Raijmakers, M C F Donkers   +2 more
exaly