Results 151 to 160 of about 484 (203)

Enhancing the control of doubly fed induction generators using artificial neural networks in the presence of real wind profiles. [PDF]

PLoS One
Dardabi C, Djebli A, Chojaa H, Aziz H, Mouradi A, Mossa MA, Abdelaziz AY, Alghamdi TAH.   +7 more
europepmc   +1 more source

Self-filtering based on the fault ride-through technique using a robust model predictive control for wind turbine rotor current. [PDF]

Sci Rep
Achar A, Djeriri Y, Benbouhenni H, Colak I, Oproescu M, Bizon N.   +5 more
europepmc   +1 more source

A discrete-time controller for the reduction of commutation torque ripple in BLDCM drives

2016 IEEE International Conference on Industrial Technology (ICIT), 2016
In this paper, a control strategy for the current loop of brushless DC motor (BLDCM) drives is proposed to reduce the commutation torque ripple. The proposed method consists of two different controllers based on dead-beat structure. Two different electrical model of BLDCM for conducting and commutation periods are considered by the controllers that are
Ihsan Obayes Khudhair Khudhair, Türker Türker   +1 more
openaire   +3 more sources

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New Method to Eliminate Commutation Torque Ripple of Brushless DC Motor With Minimum Commutation Time

IEEE Transactions on Industrial Electronics, 2013
Commutation torque ripple of brushless DC motor (BLDCM) is caused by the different current slew rates between switching-in phase and switching-out phase. If the slew rates were equal, commutation torque ripple could be eliminated. A simple full speed range method was presented in this paper to eliminate commutation torque ripple by dividing each ...
Jian Shi, Tie-Cai Li
exaly   +2 more sources

Direct Torque Control of Permanent Magnet Synchronous Motor With Reduced Torque Ripple and Commutation Frequency

IEEE Transactions on Power Electronics, 2011
In conventional direct torque controlled (DTC) permanent magnet synchronous motor drive, there is usually undesired torque and flux ripple. The existing literature have proposed some methods to reduce torque and flux ripple by optimizing the duty ratio of the active vector. However, these methods are usually complicated and parameter dependent.
null Yongchang Zhang, null Jianguo Zhu
openaire   +2 more sources

Analysis of torque ripple due to phase commutation in brushless DC machines

IEEE Transactions on Industry Applications, 1992
An original analytical study is developed concerning the torque undulation due to phase commutation on brushless DC motors. The results indicate that the relative ripple is independent of current, varies with speed, and may reach 50% of the average torque.
R Carlson
exaly   +2 more sources

Commutation Torque Ripple Reduction of Brushless DC Motor in Braking Operation

IEEE Transactions on Power Electronics, 2018
In 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
exaly   +2 more sources

Pulsewidth Modulation Technique for BLDCM Drives to Reduce Commutation Torque Ripple Without Calculation of Commutation Time

IEEE Transactions on Industry Applications, 2011
This paper presents a three-phase pulsewidth modulation (PWM) technique for brushless dc motor (BLDCM) drives to reduce the commutation torque ripple. As compared to previous approaches, the presented technique does not require any torque observer and calculation of commutation time which may be sensitive to motor parameters and may require more ...
Yong-Kai Lin, Yen-Shin Lai
exaly   +2 more sources

Commutation Torque Ripple Reduction in a Position Sensorless Brushless DC Motor Drive

IEEE Transactions on Power Electronics, 2006
This paper presents a novel method to reduce commutation torque ripple in a position sensorless brushless dc (BLDC) motor drive. To compensate the commutation torque ripple considerably, conventional methods should know commutation interval, so that they need current sensors.
Dae-Kyong Kim, Kwang-Woon Lee, Byung-Il Kwon   +2 more
exaly   +2 more sources