EPE Association: EPE 1985 - 27 - Lecture Session 5.2: TRACTION (I)

EPE 1985 - 27 - Lecture Session 5.2: TRACTION (I)
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1985 - Conference > EPE 1985 - 27 - Lecture Session 5.2: TRACTION (I)

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   VOLTAGE-FED INVERTER DRIVE FOR LINEAR INDUCTION MOTORS IN RAILWAY TRACTION
By E. Masada; K. Fujisaki; M. Kitamoto; M. Kawashima [View]
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Abstract: The single-sided linear induction motor (SLIM) drive is studied for application to the railway traction, especially for the maglev transport. Its characteristics against the operation of a vehicle is analysed, where a voltage-source inverter is assumed to supply the controlled current to the motors. The drive system for the HSST EXPO'85 maglev vehicle is studied in details. The theoretical results are compared with the experimental data obtained during its test operations. Calculated characteristics are verified with measured data. The dynamic interaction between SLIM' s and the electromagnetic suspension system (EMS) is also evaluated. The constant slip frequency control scheme can reduce the effects of the normal force caused by SLIM's, but the value of the slip frequency should be chosen in relation with the extent of dynamic interference and energy efficiency of the system. The thrust ripple generated by the harmonics in the stator current has influence on the dynamic behaviour of the EMS system and should be considered in the wave form control of the inverter.

   SIMULATION OF AN UNDERGROUND LOCOMOTIVE - PART 1 : SIMULATION CRITERIA
By F. Fuga; R. Manigrasso; G. Superti Furga [View]
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Abstract: Design of prototype railway cars for the N.3 line of the Milan underground led to a computer program for the simulation of the locomotive. It is a two-stage drive (chopper in series with an impressed current inverter) with a field oriented regulator and an input filter. The system is suitably controlled also in order to limit the low frequency harmonics in the line current. In this paper we single out the criteria adopted in the simulation of the different components with special regard to the electric equipment. Transformation on dq axes and Park's Vectors have been used for the converter and electric machines simulation in order to simplify the writing of the state equations. Results will be presented in the second part of the work.

   SIMULATION OF AN UNDERGROUND LOCOMOTIVE - PART II : APPLICATIONS
By A. Farini; R. Moruzzi; R. Manigrasso; G. Superti Furga [View]
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Abstract: The computer program for the simulation described in the first paper was employed in order to improve the regulation behaviour of the harmonic filtering and the anti-skid performance of the drive. In the present paper we first discuss a method of comparing different measures for torque (at low speed) and line current harmonic reduction (around the signalling frequency values). Then results are presented pertaining to two particular methods for harmonic reduction and a way to improve the locomotive behaviour when skidding occurs.

   MICROPROCESSOR CONTROL OF A CHOPPER-FED DC-DRIVE FOR A TRAMWAY
By J. Best; P. Mutschler [View]
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Abstract: In this application the microcomputer handles the control algorithms of the chopper including the generation of firing pulses in an interrupt driven manner. Short commissioning periods are possible with this system since the superimposed vehicle specific programs are written in a problem-oriented modular language. Diagnostic software helps in commissioning testing and troubleshooting.

   ASYNCHRONOUS TRANSMlSSION FOR ROLLING STOCK
By G. Palais [View]
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Abstract: The majority of modern traction machines are equipped with choppers and direct current motors. Nevertheless, due to the important progress accomplished during the last few years in this field of physics and controlled semi-conductor technology, we can consider that asynchronous traction motor chains are liable to compete, for certain specific applications, with direct current motor and current chopper solutions. In order to guide our choice of the traction equipment to be installed in the new generations of rolling stock, the Alsthom-Atlantique-TCO group is presently experimenting with four asynchronous motor prototypes, thus covering the numerous types of railway equipment. The voltage inverter solution is, on one hand, applied to a high powered machine (The BB10003 locomotive) and on the other hand, to an MF 64 metro motorcoach. The current switch and copper solution is, for its part, being tested out on a suburban dual current motor coach (Z2N) and on an MF77 metro motorcoach. The general principals for each of these four experiments and the particularities of the retained solution are indicated herewith.

   REMARKS ON INPUT-OUTPUT FILTERS IN A DC CONVERTER FOR ELECTRIC TRACTION
By B. Azzerboni; G. Gallanti; P. Pelacchi; A. Tellini [View]
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Abstract: This work analyses the interactions between the various elementsof a traction system constitued by a D.C. motor-smoothing inductance-chopper-supply line. In particular the survey was applied to the determining of the influence which line filter elements have on the behaviour of the motor and on the distortions of the line current. The mathematical model of the variable topology net relating to the entire drive was consequently drawn up, the line filter was tuned on the basis of the specifics imposed by the signalling and by the existing structure of the contact line. The filter was then subsequently calculated seperately after having considered the system constituted only by the motor and the converter.

EPE 1985 - 27 - Lecture Session 5.2: TRACTION (I)
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1985 - Conference > EPE 1985 - 27 - Lecture Session 5.2: TRACTION (I)
	[return to parent folder]

	VOLTAGE-FED INVERTER DRIVE FOR LINEAR INDUCTION MOTORS IN RAILWAY TRACTION By E. Masada; K. Fujisaki; M. Kitamoto; M. Kawashima	[View] [Download]
Abstract: The single-sided linear induction motor (SLIM) drive is studied for application to the railway traction, especially for the maglev transport. Its characteristics against the operation of a vehicle is analysed, where a voltage-source inverter is assumed to supply the controlled current to the motors. The drive system for the HSST EXPO'85 maglev vehicle is studied in details. The theoretical results are compared with the experimental data obtained during its test operations. Calculated characteristics are verified with measured data. The dynamic interaction between SLIM' s and the electromagnetic suspension system (EMS) is also evaluated. The constant slip frequency control scheme can reduce the effects of the normal force caused by SLIM's, but the value of the slip frequency should be chosen in relation with the extent of dynamic interference and energy efficiency of the system. The thrust ripple generated by the harmonics in the stator current has influence on the dynamic behaviour of the EMS system and should be considered in the wave form control of the inverter.

	SIMULATION OF AN UNDERGROUND LOCOMOTIVE - PART 1 : SIMULATION CRITERIA By F. Fuga; R. Manigrasso; G. Superti Furga	[View] [Download]
Abstract: Design of prototype railway cars for the N.3 line of the Milan underground led to a computer program for the simulation of the locomotive. It is a two-stage drive (chopper in series with an impressed current inverter) with a field oriented regulator and an input filter. The system is suitably controlled also in order to limit the low frequency harmonics in the line current. In this paper we single out the criteria adopted in the simulation of the different components with special regard to the electric equipment. Transformation on dq axes and Park's Vectors have been used for the converter and electric machines simulation in order to simplify the writing of the state equations. Results will be presented in the second part of the work.

	SIMULATION OF AN UNDERGROUND LOCOMOTIVE - PART II : APPLICATIONS By A. Farini; R. Moruzzi; R. Manigrasso; G. Superti Furga	[View] [Download]
Abstract: The computer program for the simulation described in the first paper was employed in order to improve the regulation behaviour of the harmonic filtering and the anti-skid performance of the drive. In the present paper we first discuss a method of comparing different measures for torque (at low speed) and line current harmonic reduction (around the signalling frequency values). Then results are presented pertaining to two particular methods for harmonic reduction and a way to improve the locomotive behaviour when skidding occurs.

	MICROPROCESSOR CONTROL OF A CHOPPER-FED DC-DRIVE FOR A TRAMWAY By J. Best; P. Mutschler	[View] [Download]
Abstract: In this application the microcomputer handles the control algorithms of the chopper including the generation of firing pulses in an interrupt driven manner. Short commissioning periods are possible with this system since the superimposed vehicle specific programs are written in a problem-oriented modular language. Diagnostic software helps in commissioning testing and troubleshooting.

	ASYNCHRONOUS TRANSMlSSION FOR ROLLING STOCK By G. Palais	[View] [Download]
Abstract: The majority of modern traction machines are equipped with choppers and direct current motors. Nevertheless, due to the important progress accomplished during the last few years in this field of physics and controlled semi-conductor technology, we can consider that asynchronous traction motor chains are liable to compete, for certain specific applications, with direct current motor and current chopper solutions. In order to guide our choice of the traction equipment to be installed in the new generations of rolling stock, the Alsthom-Atlantique-TCO group is presently experimenting with four asynchronous motor prototypes, thus covering the numerous types of railway equipment. The voltage inverter solution is, on one hand, applied to a high powered machine (The BB10003 locomotive) and on the other hand, to an MF 64 metro motorcoach. The current switch and copper solution is, for its part, being tested out on a suburban dual current motor coach (Z2N) and on an MF77 metro motorcoach. The general principals for each of these four experiments and the particularities of the retained solution are indicated herewith.

	REMARKS ON INPUT-OUTPUT FILTERS IN A DC CONVERTER FOR ELECTRIC TRACTION By B. Azzerboni; G. Gallanti; P. Pelacchi; A. Tellini	[View] [Download]
Abstract: This work analyses the interactions between the various elementsof a traction system constitued by a D.C. motor-smoothing inductance-chopper-supply line. In particular the survey was applied to the determining of the influence which line filter elements have on the behaviour of the motor and on the distortions of the line current. The mathematical model of the variable topology net relating to the entire drive was consequently drawn up, the line filter was tuned on the basis of the specifics imposed by the signalling and by the existing structure of the contact line. The filter was then subsequently calculated seperately after having considered the system constituted only by the motor and the converter.