EPE Association: EPE 2015 - LS3c: Motion Control

EPE 2015 - LS3c: Motion Control
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 04: Electrical Machines and Drive Systems > EPE 2015 - LS3c: Motion Control

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   A flexible and fast restart strategy for induction motors using a DVR
By Wentao HUANG [View]
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Abstract: Aiming at solving the problem of induction motor restart, which is affected by residual voltage when the power of the motor is interrupted and reapplied, a 'flexible voltage' scheme have been proposed using a dynamic voltage restorer (DVR). When 'flexible voltage' is applied to restart the induction motors, the motor can be quickly restarted with greatly reduced current surges and torque pulsation.

   Additional Internal Speed Feedback Loop for Suppression of the Servomechanism Residual Vibration
By David LINDR [View]
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Abstract: This paper describes a residual vibration active damping method of flexible servomechanism. The method basically uses an additional feedback loop from the internal motor speed sensor. By means of phase shifting and weighting is the signal adjusted into an appropriate scale and phase and returned back into the drive control structure as an additional speed setpoint. This method was implemented into the conventional drive system by means of standard configuration tools and its damping effect proven experimentally.

   High fidelity closed loop controlled friction in SMARTTAC tactile stimulator
By Wael BEN MESSAOUD [View]
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Abstract: The present study investigates the implementation of a closed loop control in a new smart tactile stimulator called 'SMARTTAC'. This haptic device is able to stimulate the fingertip in order to simulate the texture perception of different real surfaces such as gratings. Two closed loop control are implemented to ensure both a stable vibration amplitude despite of external disturbances and accurate control of the friction coefficient using the new design of the tactile stimulator. Experimental measurements give satisfactory results both on dynamics and robustness points of view.

   Modeling and Optimized Control of Fault-Tolerant H-Bridge Fed Multiphase Drives
By Alexander ROSEN [View]
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Abstract: In this paper, a model and an enhanced control strategy for fault-tolerant drive topologies based on multiphase, H-bridge-fed electric machines is presented. The model incorporates non-linear effects of structural saliencies, higher order harmonics and saturation. Unsymmetric operation states can be simulated and the torque is estimated including torque ripple due to higher order harmonics. Based upon the derived torque equation, a new approach for the determination of the optimal current waveforms in normal and fault operation is presented. The control strategy allows for a significant reduction of copper losses in normal operation and constant torque production in fault mode with open phase or short circuit-phase condition.The effectiveness of the developed control strategy is demonstrated by simulations and test bench measurements with a five-phase, H-bridge fed wheel hub drive.

EPE 2015 - LS3c: Motion Control
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 04: Electrical Machines and Drive Systems > EPE 2015 - LS3c: Motion Control
	[return to parent folder]

	A flexible and fast restart strategy for induction motors using a DVR By Wentao HUANG	[View] [Download]
Abstract: Aiming at solving the problem of induction motor restart, which is affected by residual voltage when the power of the motor is interrupted and reapplied, a 'flexible voltage' scheme have been proposed using a dynamic voltage restorer (DVR). When 'flexible voltage' is applied to restart the induction motors, the motor can be quickly restarted with greatly reduced current surges and torque pulsation.

	Additional Internal Speed Feedback Loop for Suppression of the Servomechanism Residual Vibration By David LINDR	[View] [Download]
Abstract: This paper describes a residual vibration active damping method of flexible servomechanism. The method basically uses an additional feedback loop from the internal motor speed sensor. By means of phase shifting and weighting is the signal adjusted into an appropriate scale and phase and returned back into the drive control structure as an additional speed setpoint. This method was implemented into the conventional drive system by means of standard configuration tools and its damping effect proven experimentally.

	High fidelity closed loop controlled friction in SMARTTAC tactile stimulator By Wael BEN MESSAOUD	[View] [Download]
Abstract: The present study investigates the implementation of a closed loop control in a new smart tactile stimulator called 'SMARTTAC'. This haptic device is able to stimulate the fingertip in order to simulate the texture perception of different real surfaces such as gratings. Two closed loop control are implemented to ensure both a stable vibration amplitude despite of external disturbances and accurate control of the friction coefficient using the new design of the tactile stimulator. Experimental measurements give satisfactory results both on dynamics and robustness points of view.

	Modeling and Optimized Control of Fault-Tolerant H-Bridge Fed Multiphase Drives By Alexander ROSEN	[View] [Download]
Abstract: In this paper, a model and an enhanced control strategy for fault-tolerant drive topologies based on multiphase, H-bridge-fed electric machines is presented. The model incorporates non-linear effects of structural saliencies, higher order harmonics and saturation. Unsymmetric operation states can be simulated and the torque is estimated including torque ripple due to higher order harmonics. Based upon the derived torque equation, a new approach for the determination of the optimal current waveforms in normal and fault operation is presented. The control strategy allows for a significant reduction of copper losses in normal operation and constant torque production in fault mode with open phase or short circuit-phase condition.The effectiveness of the developed control strategy is demonstrated by simulations and test bench measurements with a five-phase, H-bridge fed wheel hub drive.