Results 171 to 180 of about 17,191 (210)

Back electromotive force enhancement for a new single-phase synchronous motor

Journal of Applied Physics, 1999
In this article, the back electromotive force (emf) of a new single-phase synchronous motor of the two-pole type useful in aquarium application is studied. Based on a two-dimensional model, the finite-element method is used to numerically analyze the magnetic field distribution inside the motors, from which the back emfs can be computed.
Yin-Kwang Lin, Der-Ray Huang, Shin-Lu Chen, Kuo-Chi Chiu, Tai-Fa Ying, Chung-I G. Hsu   +5 more
openaire   +1 more source

Commutating Current Modulation Method of Brushless Direct Current Motor under Non-ideal Back Electromotive Force

Journal of Electrical Engineering & Technology, 2021
A phase current modulation method that suppresses commutating torque pulsation of brushless direct current motor under non-ideal back EMF was proposed to solve commutating toque ripple problem. This method calculates the duty cycle and commutation time by acquiring the line voltage in real time, and controls the modulation of different duty cycles of ...
Shuai Yin, Zhiqiang Wang, Tiehua Ma
openaire   +1 more source

Generator Back-Electromotive-Force Shaping for DC Output with Low Ripple Voltage

2019 IEEE International Electric Machines & Drives Conference (IEMDC), 2019
An integrated generator-rectifier system has been shown to be beneficial in reducing ac-to-dc conversion loss at megawatt power level. The architecture incorporates passive and active rectifiers into a multi-port permanent magnet synchronous generator.
Qichen Jin, Phuc Huynh, Arijit Banerjee
openaire   +1 more source

Taguchi Robust Design of Back Electromotive Force Considering the Manufacturing Tolerances in IPMSM

2012 Sixth International Conference on Electromagnetic Field Problems and Applications, 2012
This paper presents the robust design of back electromotive force (EMF) characteristic analysis considering the manufacturing tolerances of the permanent magnets (PM) in the interior permanent magnet synchronous motor (IPMSM). We choose the design variables that make an impact on the EMF, and then perform the robust design of EMF using the Taguchi ...
Su-Jin Lee, Kyu-Seob Kim, Su-gil Cho, Junyong Jang, Taehee Lee, Jung-Pyo Hong   +5 more
openaire   +1 more source

Sensorless control of synchronous reluctance drive based on extended back electromotive force model

2016 International Symposium on Industrial Electronics (INDEL), 2016
This paper presents an overview and systematic analysis of various design methods for obtaining the observer corrective action gains for stable and precise estimation of synchronous reluctance motor speed. The structure of the reduced order observer consider stator current and extended back electromotive force vectors as observer state variables in ...
Vladimir Popovic, Marko Gecic, Ivan Todorovic, Djura Oros, Darko Marcetic   +4 more
openaire   +1 more source

Shaped Time-Optimal Feedback Control for Disk-Drive Systems With Back-Electromotive Force

IEEE Transactions on Magnetics, 2004
In this paper, we describe the design of closed-loop control laws for disk-drive systems that account for back-electromotive force (back-EMF) by using a phase-plane approach. The time-optimal control law for a rigid body is shaped by using input shaping ideas to address the flexible mode, and then the altered rigid body phase-plane trajectories ...
C. La-orpacharapan, L.Y. Pao
openaire   +1 more source

Vibration and acoustic noise reduction of switched reluctance motor with back electromotive force control

2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe), 2017
This paper proposes, as a control scheme of a switched reluctance motor, back electromotive force control (back-EMF control for the abbreviation) in order to reduce the vibration and the acoustic noise of a switched reluctance motor. In back-EMF control, the winding current is kept around the current reference without switching the power devices in a ...
Yosuke Murakami, Nobukazu Hoshi
openaire   +1 more source

A Novel Energy Harvester in a Backpack via Precision Sensing of Back Electromotive Force

ASME 2020 29th Conference on Information Storage and Processing Systems, 2020
Abstract In this paper, swop fly-back converter, a new type of fly-back converter, was proposed. It is controlled by constant-on time, a strategy of pulse frequency modulation with boundary conduction mode. Due to the structure of swop fly-back converter and the boundary conduction mode control strategy, the energy delivery to battery is
W.-W. Yen, Paul C.-P. Chao
openaire   +1 more source

Research of speed-torque characteristics of brushless DC motor based on back electromotive force

2015 18th International Conference on Electrical Machines and Systems (ICEMS), 2015
Speed-torque characteristics of brushless DC motors with trapezoidal and sinusoidal back electromotive force (EMF) based on two devices conducted drive method are analyzed separately. A back EMF coefficient using the average value during conduction region is used to calculate the speed-torque characteristics with real back EMF.
Hou Hongsheng, Liu Weiguo
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