Results 151 to 160 of about 7,625 (211)
The impact of stator module gaps on the performance of canned permanent magnet synchronous motors with segmented stators. [PDF]
Sci RepMing L, Jixin Z, Guanghui D, Shuxian L.
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Robust sensorless control of high speed PMSM drives under low carrier ratios and parameter uncertainties. [PDF]
Sci RepLin Z, Jin S, Wang H, Zhang F.
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Minimization of torque ripple in SRM drives
IEEE Transactions on Industrial Electronics, 2002The torque pulsations in switched reluctance motors (SRMs) are relatively higher compared to sinusoidal machines due to the doubly salient structure of the motor. The magnetization pattern of the individual phases together with the T-i-/spl theta/ characteristics of the motor dictate the amount of torque ripple during operation. Both machine design and
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Accurate Torque Ripple Measurement for PMSM
IEEE Transactions on Instrumentation and Measurement, 2011Torque ripple in permanent-magnet synchronous motors is generally undesirable. Significant work has been done to minimize this torque, either by modifying the mechanical motor design or by careful controller design. Surprisingly, however, little work has been published on the accuracy of torque ripple measurement.
Greg Heins, Mark Thiele, Travis Brown
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Effect of magnet coverage on torque, loss and torque ripple in a PMSM
IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society, 2014This paper address the effect of magnet coverage on the torque, iron and magnet loss components and torque ripple of two surface permanent magnet synchronous generators of 5MW. The values of torque, torque ripple, iron and magnet losses are calculated using a FEM program.
Poopak Roshanfekr +3 more
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Analysis of torque ripple in a BDCM
IEEE Transactions on Magnetics, 2002In this paper, torque and torque ripple in a brushless direct-current motor drive are assessed. First, the cogging torque is determined using finite-element method. The torque ripple is then calculated for the motor drive with the controller. The simulation model allows a comparison between the motor design and the motor drive performance with respect ...
H. Zeroug, B. Boukais, H. Sahraoui
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Predictive torque control of DFIG with torque ripple reduction
2016 IEEE International Conference on Power and Energy (PECon), 2016A 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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Minimization of Torque Ripple in PWM AC Drives
IEEE Transactions on Industrial Electronics, 2009A pulsewidth modulation (PWM) technique is proposed for minimizing the RMS torque ripple in inverter-fed induction motor drives subject to a given average switching frequency of the inverter. The proposed PWM technique is a combination of optimal continuous modulation and discontinuous modulation.
Kaushik Basu +2 more
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Optimum geometry for torque ripple minimization of switched reluctance motors
IEEE Transactions on Energy Conversion, 2000 For switched reluctance motors, one of the major problems is torque ripple which causes increased undesirable acoustic noise and possibly speed ripple.
Fikrettin Şahin
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ASCOT Modelling of Ripple Effects on Toroidal Torque
Contributions to Plasma Physics, 2008AbstractToroidal field ripple, δ =(Bmax ‐Bmin )/(Bmax +Bmin ), in ITER will be relatively large, about 0.5% at the outer midplane. Due to the importance of toroidal rotation on plasma stability and confinement it is important to understand the consequences of a non‐negligible ripple field on rotation.
Salmi, A. +7 more
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