EPE Association: EPE 2003 - Topic 07g: System Integration and Applications

EPE 2003 - Topic 07g: System Integration and Applications
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2003 - Conference > EPE 2003 - Topic 07: MEASUREMENTS AND SENSORS > EPE 2003 - Topic 07g: System Integration and Applications

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   Simulation and experimental verification of torque/speed transients of induction machines by using an Eddy-current sensor
By A. Sonal; B. Skala [View]
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Abstract: The torque, acceleration and speed measurements in high transient conditions in rotating machines are often a complicated and expensive matter. The methods and instruments for transient torque of an electrical machine measurement without impact on mechanical system behaviour are described. For this investigation a simple and effective angular acceleration sensor working on the Ferraris principle, to determine the transient torque and velocity transients has been developed and used. The eddycurrent acceleration-measuring sensor presented on this paper is able to give in real time the transient shaft torque and by integration of the acceleration signal the speed of extremely wide range of all kind of rotating machines. The torque, speed, currents and voltages of 2 various induction motors with 0,9 kW and 11 kW as test results for no-load running-up, reversing, star-delta switching transient behaviour are presented. The calculated results of three-phase, star-connected, 4 pole, 230 V / 400 V, 11 kW and 50 Hz induction motor based on the space-phasor theory using a simulation program are compared with measured results.

   FPGA realization of reconfigurable IP-core function for real-time induction motor model
By L. Charaabi; E. Monmasson; I. Slama-Belkhodja; J-P. Louis [View]
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Abstract: This paper presents a new circuit realization of induction motor model using Field Programmable Gate Array (FPGA) device. The proposed model can be realized using only single FPGA (XC2s100) from Xilinx, Inc. To develop an efficient IP-Core function of this model, authors apply a methodology that offers a considerable hardware design advantage and allows its reconfiguration in real time. The proposed method starts with simulation in order to formulate the specification model. This is followed by the circuit synthesis for the development of the implementation model. Simulation and experimental results are given to verify the implemented model.

   An interference current sensor for Eurostar
By C.D.M. Oates; W.G. Garlick; R. Banks; N. Spibey; A.J. Burnett; R.B. Siddall [View]
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Abstract: An Interference Current Monitor Unit (ICMU) is used in railway systems to provide a means of detecting and preventing electrical currents drawn by a train from interfering with the track signalling. It does this by detecting the presence of electrical interference and shutting down the relevant part of the train system for sufficient time for the interference to clear. The ICMUs for the Eurostar 750V d.c. supply have to detect currents of less than 2 A r.m.s at 50Hz in the presence of up to 3,000 A d.c. in a busbar also used at rated input voltages of 3 kV. The ICMU’s design was subject to stringent reliability requirements and it had to be mounted in an area of very high electro-magnetic field and so needed to be immune to electrical interference. This paper discusses the characterisation of the electromagnetic environment, the busbar currents to be monitored on Eurostar and the implications for equipment design.

EPE 2003 - Topic 07g: System Integration and Applications
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2003 - Conference > EPE 2003 - Topic 07: MEASUREMENTS AND SENSORS > EPE 2003 - Topic 07g: System Integration and Applications
	[return to parent folder]

	Simulation and experimental verification of torque/speed transients of induction machines by using an Eddy-current sensor By A. Sonal; B. Skala	[View] [Download]
Abstract: The torque, acceleration and speed measurements in high transient conditions in rotating machines are often a complicated and expensive matter. The methods and instruments for transient torque of an electrical machine measurement without impact on mechanical system behaviour are described. For this investigation a simple and effective angular acceleration sensor working on the Ferraris principle, to determine the transient torque and velocity transients has been developed and used. The eddycurrent acceleration-measuring sensor presented on this paper is able to give in real time the transient shaft torque and by integration of the acceleration signal the speed of extremely wide range of all kind of rotating machines. The torque, speed, currents and voltages of 2 various induction motors with 0,9 kW and 11 kW as test results for no-load running-up, reversing, star-delta switching transient behaviour are presented. The calculated results of three-phase, star-connected, 4 pole, 230 V / 400 V, 11 kW and 50 Hz induction motor based on the space-phasor theory using a simulation program are compared with measured results.

	FPGA realization of reconfigurable IP-core function for real-time induction motor model By L. Charaabi; E. Monmasson; I. Slama-Belkhodja; J-P. Louis	[View] [Download]
Abstract: This paper presents a new circuit realization of induction motor model using Field Programmable Gate Array (FPGA) device. The proposed model can be realized using only single FPGA (XC2s100) from Xilinx, Inc. To develop an efficient IP-Core function of this model, authors apply a methodology that offers a considerable hardware design advantage and allows its reconfiguration in real time. The proposed method starts with simulation in order to formulate the specification model. This is followed by the circuit synthesis for the development of the implementation model. Simulation and experimental results are given to verify the implemented model.

	An interference current sensor for Eurostar By C.D.M. Oates; W.G. Garlick; R. Banks; N. Spibey; A.J. Burnett; R.B. Siddall	[View] [Download]
Abstract: An Interference Current Monitor Unit (ICMU) is used in railway systems to provide a means of detecting and preventing electrical currents drawn by a train from interfering with the track signalling. It does this by detecting the presence of electrical interference and shutting down the relevant part of the train system for sufficient time for the interference to clear. The ICMUs for the Eurostar 750V d.c. supply have to detect currents of less than 2 A r.m.s at 50Hz in the presence of up to 3,000 A d.c. in a busbar also used at rated input voltages of 3 kV. The ICMU’s design was subject to stringent reliability requirements and it had to be mounted in an area of very high electro-magnetic field and so needed to be immune to electrical interference. This paper discusses the characterisation of the electromagnetic environment, the busbar currents to be monitored on Eurostar and the implications for equipment design.