Results 261 to 270 of about 13,756 (306)

Cogging torque and torque ripple reduction of modular permanent magnet machines

2016 XXII International Conference on Electrical Machines (ICEM), 2016
In order to minimize the cogging torque and torque ripple for surface mounted permanent magnet (SPM) machines, this paper proposes a C-core modular stator which can be obtained by inserting flux gaps (FGs) into every stator tooth. The electromagnetic performances of C-core modular PM machines such as open-circuit flux linkage, phase back-EMF, cogging ...
G. J. Li, B. Ren, Z. Q. Zhu
openaire   +1 more source

Intelligent Sensor Bearing for Torque Ripple Reduction

2012
Permanent magnet synchronous machines (PMSM) are widely used in the automobile industry (E.g. EV&HEV, EPS). However, an important problem of PMSMs is that its parasitic torques may degrade the performances of the drive system. In the vehicle, they bring uncomfortable feelings to passengers.
Yi Yuan, Mathieu Hubert, Stephane Moisy, Francois Auger, Luc Loron   +4 more
openaire   +1 more source

Torque ripple reduction of Induction Motor using Dynamic Fuzzy Prediction Direct Torque Control

ISA Transactions, 2020
This paper presents a Dynamic Fuzzy Logic based Prediction Direct Torque Control (DFL-PDTC) technique to reduce torque ripples within the squirrel cage induction motor (SCIM). This DFL and PDTC combination reduces the high amount of torque ripple and improves the starting conditions in both low& high mechanical speeds of the motor. The Induction Motor (
Ranjit Kumar, Bindal, Inderderpreet, Kaur   +1 more
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Torque ripple reduction in five-phase direct torque controlled induction motor

2014 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2014
This paper presents the torque ripple reduction in the direct torque controlled (DTC) five phase induction motor (IM). The ripples are directly related to the hysteresis band of the controller in torque and flux loops within the operating switching frequency limits.
Yogesh N. Tatte, Mohan V. Aware
openaire   +1 more source

Direct Torque Control of induction motor with reduction of torque ripple

2000 26th Annual Conference of the IEEE Industrial Electronics Society. IECON 2000. 2000 IEEE International Conference on Industrial Electronics, Control and Instrumentation. 21st Century Technologies and Industrial Opportunities (Cat. No.00CH37141), 2002
It is widely known that Direct Torque Control (DTC) has fast dynamic torque response. It originates in the fact that torque and flux is directly controlled by instantaneous space voltage vector unlike Field Oriented Control (FOC). For the reason, Direct Torque Control gradually has been used in the field requiring fast response since its introduction ...
null Koang-Kyun La, null Myoung-Ho Shin, null Dong-Seok Hyun   +2 more
openaire   +1 more source

Torque ripple reduction in a PMSM driven by direct torque control

2008 IEEE Power Electronics Specialists Conference, 2008
Permanent magnet synchronous motors (PMSM) are extensively used in high-performance industrial applications. The electromagnetic torque in a PMSM is proportional to the angle between the stator and rotor flux linkages. Therefore, high dynamic response can be achieved by means of direct torque control (DTC).
L. Romeral, A. Fabrega, J. Cusido, A. Garcia, J.A. Ortega   +4 more
openaire   +1 more source

Torque Ripple Reduction in BLDC Torque Motor With Nonideal Back EMF

IEEE Transactions on Power Electronics, 2012
In order to improve the speed precision and stabilization of the gimbal servo system of double gimbal magnetically suspended control moment gyro, a comprehensive analysis of the reason of electromagnetic torque ripples of brushless direct current motor with nonideal back electromotive force (EMF) drives in the conduction and commutation regions is ...
Jiancheng Fang, Haitao Li, Bangcheng Han
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Reduction of torque ripple in brushless DC motors

IEEE Transactions on Magnetics, 1995
For permanent magnet (PM) brushless DC motors, torque ripple, is an important origin of vibration, acoustic noise and speed fluctuation. In this paper, the output torque profile of a PM motor with one phase energized is decomposed into the commutation torque, the reluctance torque and the armature reaction according to their source origins. It verifies
S.M. Hwang, D.K. Lieu
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Performance Optimization of PMSM with Torque Ripple Reduction

2018 IEEE Energy Conversion Congress and Exposition (ECCE), 2018
Present day PMSM design methodologies often use optimization tools. Optimizing the geometry alone, may lead to designs that have high efficiency and torque density but may have high torque ripple. By injecting high frequency currents, some optimal geometries with too high torque ripple, become acceptable and optimal, even with an increase in machine ...
Cristian A. Lopez, Elias G. Strangas
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Torque ripple reduction in brushless DC motor drives

2012 International Conference and Exposition on Electrical and Power Engineering, 2012
Torque ripple generated in commutation period is the main drawback of Brushless DC (BLDC) motor, and many methods have been studied to solve this problem. In many control method, the torque ripple reduction was considered in the point of current control, which means that if current can be controlled properly, the BLDC motor does not produce any torque ...
U. Gheorghe, D. Cristina, B. Gheorghe
openaire   +1 more source