EPE Association: EPE 1999 - Topic 07d: System Integration and Applications

EPE 1999 - Topic 07d: System Integration and Applications
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1999 - Conference > EPE 1999 - Topic 07: MEASUREMENTS AND SENSORS > EPE 1999 - Topic 07d: System Integration and Applications

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   Design of an Integrated Electromagnetic Levitation and Guidance System for SwissMetro
By A. D’Arrigo; R. Alfred [View]
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Abstract: Electromagnetic levitated and guided systems are commonly used in the field of people transport vehicles, tool machines frictionless bearings and conveyor systems. In the case of low speed people transport vehicles, the electromagnetic levitation offers the advantage of a very silent motion and of a reduced maintenance of the rail. In the world there are actually two working low speed systems: the Japanese HSST ([1], [2]) and the English BAMS (Birmingham Airport MagLev System [3]). In both these magnetically levitated trains the guidance force needed to keep the vehicles on the track is obtained with the levitation electromagnets, thanks to particular shapes of the rails and to a clever placement of the electromagnets with respect to the rails ([4]). This paper shows a simple magnetic model for the study of the levitation and guidance forces produced by an electromagnet coupled with an iron rail. The rail and electromagnet shapes taken into consideration in this paper can better refer to the Japanese HSST than to the English BAMS. This paper will also deals with the study of the guidance force in the case of a vertical position control. The study shows that the guidance force can be stronger than in an open loop study.

   Lateral Position Sensor for an Inductively Powered Automatic Guided vehicle
By M. Perrottet; M. Jufer [View]
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Abstract: An inductively powered automatic guided vehicle needs a lateral sensor to steer the vehicle. The vehicle used for the work described in this paper is developed for people transportation. One way to realise the guidance function is to use the magnetic field generated by the induction power transfer. The magnetic field provides the guidance signals to coils located on the vehicle. The conception of the sensor, the acquisition and processing of these signals are subjects treated by this paper.

   Power Transformers Computer-Aided Monitoring
By C. Vlaicu; S. Dan Grigorescu; M. Marilena Albu [View]
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Abstract: Degradation of large power equipment is one of the major concerns of electricity supply authorities. Current methods for monitoring the condition of heavy power equipment are time consuming and often inaccurate. Fibre optic sensors and transducers based on fibre optic transmission offer a radically different approach to these problems and could allow continuos, on-line condition monitoring. This paper provides a brief survey of these sensors and explores the practical and potential applications for the conditions monitoring of high voltage equipment, particularly big power transformers.

EPE 1999 - Topic 07d: System Integration and Applications
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1999 - Conference > EPE 1999 - Topic 07: MEASUREMENTS AND SENSORS > EPE 1999 - Topic 07d: System Integration and Applications
	[return to parent folder]

	Design of an Integrated Electromagnetic Levitation and Guidance System for SwissMetro By A. D’Arrigo; R. Alfred	[View] [Download]
Abstract: Electromagnetic levitated and guided systems are commonly used in the field of people transport vehicles, tool machines frictionless bearings and conveyor systems. In the case of low speed people transport vehicles, the electromagnetic levitation offers the advantage of a very silent motion and of a reduced maintenance of the rail. In the world there are actually two working low speed systems: the Japanese HSST ([1], [2]) and the English BAMS (Birmingham Airport MagLev System [3]). In both these magnetically levitated trains the guidance force needed to keep the vehicles on the track is obtained with the levitation electromagnets, thanks to particular shapes of the rails and to a clever placement of the electromagnets with respect to the rails ([4]). This paper shows a simple magnetic model for the study of the levitation and guidance forces produced by an electromagnet coupled with an iron rail. The rail and electromagnet shapes taken into consideration in this paper can better refer to the Japanese HSST than to the English BAMS. This paper will also deals with the study of the guidance force in the case of a vertical position control. The study shows that the guidance force can be stronger than in an open loop study.

	Lateral Position Sensor for an Inductively Powered Automatic Guided vehicle By M. Perrottet; M. Jufer	[View] [Download]
Abstract: An inductively powered automatic guided vehicle needs a lateral sensor to steer the vehicle. The vehicle used for the work described in this paper is developed for people transportation. One way to realise the guidance function is to use the magnetic field generated by the induction power transfer. The magnetic field provides the guidance signals to coils located on the vehicle. The conception of the sensor, the acquisition and processing of these signals are subjects treated by this paper.

	Power Transformers Computer-Aided Monitoring By C. Vlaicu; S. Dan Grigorescu; M. Marilena Albu	[View] [Download]
Abstract: Degradation of large power equipment is one of the major concerns of electricity supply authorities. Current methods for monitoring the condition of heavy power equipment are time consuming and often inaccurate. Fibre optic sensors and transducers based on fibre optic transmission offer a radically different approach to these problems and could allow continuos, on-line condition monitoring. This paper provides a brief survey of these sensors and explores the practical and potential applications for the conditions monitoring of high voltage equipment, particularly big power transformers.