Results 251 to 260 of about 13,756 (306)

Torque ripple reduction of a variable flux motor

2016 IEEE Energy Conversion Congress and Exposition (ECCE), 2016
This paper examines torque ripple in a new topology of variable flux machine with AlNiCo magnet. To reduce the torque ripple, the design and finite element modeling of this machine are reviewed and the finite element model results are verified with the prototyped motor. The effects of various electrical, magnetic and geometrical parameters such as load,
Amirmasoud Takbash, Pragasen Pillay, Ibrahim, Maged   +2 more
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Predictive torque control of DFIG with torque ripple reduction

2016 IEEE International Conference on Power and Energy (PECon), 2016
A novel predictive direct torque control (DTC) based on cost function for doubly fed induction generator is proposed in this paper. Finite control set model predictive control (FCS-MPC) predicts the torque and rotor flux for the next duration of switching and chooses and applies the best voltage vector for adjusting the electromagnetic torque and the ...
Mohsen Mokhtari, S. Alireza Davari
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Torque ripple reduction of synchronous reluctance machines

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 2015
Purpose – The purpose of this paper is to investigate the influence of stator and rotor pole number combinations together with the flux-barrier layers number on the performance of synchronous reluctance machine with emphasis on output torque capability and torque ripple.
K. Wang, Z.Q. Zhu, G. Ombach, M. Koch, S. Zhang, J. Xu   +5 more
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Torque Ripple Reduction in Sensorless PMSM Drives

IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics, 2006
The paper proposes a method for the compensation of the torque ripple that is caused by motor unidealities in sensorless permanent magnet synchronous motor drives. The sensorless control of the interior-magnet motor is based on a speed-adaptive observer augmented with a pulsating high-frequency signal injection technique at low speeds. The harmonics in
Antti Piippo, Jorma Luomi
openaire   +1 more source

Torque ripple reduction in direct torque controlled Brushless DC motor

2011 International Conference on Electrical Machines and Systems, 2011
This paper describes torque ripple reduction in direct torque controlled Brushless DC Motor. The zero voltage vector in present most direct torque control technique is defined as the state when all switches are turn-off. However, in studying the circuit of the switch state in each sector, recognized the voltage of motor windings are not zero. Thus, six
Zhenguo Li, Lu Wang, Songfa Zhang, Chunjiang Zhang, Jin-Woo Ahn   +4 more
openaire   +1 more source

Reconfigurable Direct Torque and Flux Control with Torque Ripple Reduction

IFAC Proceedings Volumes, 2011
Abstract This work presents a reconfigurable direct torque and flux control strategy which guarantees good performance in presence of faults in the actuator, the voltage source inverter. It is based on a new quantification of the stator flux vector position means a new definition of sectors on the ab-plane.
Matías A. Nacusse, Mónica E. Romero, Sergio J. Junco   +2 more
openaire   +1 more source

Torque Ripple Reduction for Step Motors

2003
In this chapter, we present controllers that reduce torque ripple for different types of stepper motors. The pulsating torque developed when a stepper motor is full- or half-stepped is known as the torque ripple and is the main cause of exciting resonance in the motor.
Farshad Khorrami, Prashanth Krishnamurthy, Hemant Melkote   +2 more
openaire   +1 more source

Transverse-flux motor for enhanced torque and reduction of torque ripple

2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe), 2015
Windings are significant factors affecting the manufacturing cost and reliability of motors. For use in electric vehicles, motors should be highly efficient, inexpensive, and highly reliable; moreover, high efficiency and reliability are major requirements for wind generators.
Kazuto Sakai, Junya Tanaka
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Torque ripple reduction in direct torque control of induction motor drives

Proceedings. National Power Engineering Conference, 2003. PECon 2003., 2005
This paper gives an overview to the principle of direct torque control (DTC) of induction machines (IM) drives. A summary to the various techniques of torque ripple reduction followed by a proposed simple method to reduce the torque ripple is also presented. Modeling and design methodology of this proposed method are given.
Toh, C.L, Idris , N.R.N, Yatim, A.H.M
openaire   +1 more source