Results 111 to 120 of about 1,424 (159)
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Permanent-magnet motors for brushless operation
IEEE Transactions on Industry Applications, 1990The design considerations for permanent-magnet motors intended for brushless operation are discussed. Two rotor configurations are described: the imbricated rotor and the segmented rotor. The segmented rotor is designed specially for high-speed operation.
M A Jabbar
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Review of position-sensorless operation of brushless permanent-magnet machines
IEEE Transactions on Industrial Electronics, 2006The operation of a brushless permanent-magnet machine requires rotor-position information, which is used to control the frequency and phase angle of the machine's winding currents. Sensorless techniques for estimating rotor position from measurements of voltage and current have been the subject of intensive research. This paper reviews the state of the
P P Acarnley
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2009 International Conference on Electrical Machines and Systems, 2009
In this paper, electromagnetic vibration of interior permanent magnet (IPM) brushless motors under BLDC and BLAC operation mode is investigated. The electromagnetic field is calculated by 2D finite element analysis (FEA). The radial and tangential force distribution on the stator is also derived, and input to the structure transient finite element ...
Haodong Yang, Yangsheng Chen
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In this paper, electromagnetic vibration of interior permanent magnet (IPM) brushless motors under BLDC and BLAC operation mode is investigated. The electromagnetic field is calculated by 2D finite element analysis (FEA). The radial and tangential force distribution on the stator is also derived, and input to the structure transient finite element ...
Haodong Yang, Yangsheng Chen
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Commutation Torque Ripple Reduction of Brushless DC Motor in Braking Operation
IEEE Transactions on Power Electronics, 2018In this paper, the commutation torque ripple is studied in the brushless DC motor (BLDCM) braking operation. As the phase currents flow in the reversed directions in the braking operation, the current circuits in the braking operation are different from those in the motor operation. For this reason, it is found that the commutation torque ripple can be
Tingna Shi, Wei Chen, Changliang Xia
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PWM control mode for four-quadrant operation of brushless DC motor
2017 36th Chinese Control Conference (CCC), 2017Brushless DC motor has been becoming more popular in industry, electric and aerospace applications, making the control for four-quadrant operation of Brushless DC motor greatly significant. This paper presents pulse width modulation (PWM) control mode for four-quadrant operation of Brushless DC motor, which can realize both motoring and braking ...
Xuliang Yao
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Operating limits and practical operation of a brushless doubly-fed reluctance machine
2017 IEEE Energy Conversion Congress and Exposition (ECCE), 2017In this paper a prototype brushless doubly-fed reluctance machine is investigated which is aimed a meeting commercial machine performance figures. The machine has 4 and 8 pole 3-phase stator windings and a 6 pole radially-laminated ducted rotor. The machine is investigated using finite element analysis (FEA), static torque tests with DC current ...
William K. Song +4 more
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A novel PWM_OFF_PWM mode for braking operation of brushless DC motor
IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017The conventional pulse width modulation (PWM) modes for braking operation in Brushless DC motor may cause diode freewheeling in inactive phase during normal conduction period which will aggravate torque ripple. In this paper, a novel braking PWM modulation mode named PWM_OFF_PWM is proposed to eliminate the diode freewheeling.
Xuliang Yao, Yan Zhang, Xiaoming Jiang
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Stable Operation of the Brushless Doubly-Fed Machine (BDFM)
2007 7th International Conference on Power Electronics and Drive Systems, 2007A simple method of controlling the Brushless Doubly-Fed Machine (BDFM) is presented. The controller comprises two Proportional-Integral (PI) modules and requires only the rotor speed feedback. The machine model and the control system are developed in MATLAB. Both simulation and experimental results are presented.
Shiyi Shao, Ehsan Abdi, Richard McMahon
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