EPE Association: EPE 1989 - 27 - Lecture Session 3.10: TRACTION DEVICES

EPE 1989 - 27 - Lecture Session 3.10: TRACTION DEVICES
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1989 - Conference > EPE 1989 - 27 - Lecture Session 3.10: TRACTION DEVICES

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   CURRENT CONTROL OF A CURRENT-SOURCE SINGLE-PHASE PWM-CONVERTER WITH LOW REACTION ON MAINS
By B. Yu; U. Kunz [View]
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Abstract: This paper deals with a current source single-phase converter in pulse-mode operation with pulsewidth modulation for the use in traction technique. The control of the converter consists of two parts, the DC output current control and the AC input current control. Because of the controlled DC output current, the converter can feed DC motors directly and three-phase AC motors with an additional current source inverter. The AC input current control takes care that the line current is sinusoidal and in phase with the line voltage. Experimental results show the usability of the control scheme.

   MODULAR CONTROL WITH MICRO-CONTROLLER AND HIGH SPEED SERlAL NETWORK FOR ASYNCHRONOUS DRIVES
By J. Bavard; E. Avril [View]
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Abstract: This document outlines a family of programmable controls developed by ALSTHOM for its asyncbronous drive railway applications. The desired reduction of costs and development deadlines has led to a definition of standard hardware and software elements. They are combined into a non-hierarchical structure using 16-bit micro controllers which dialogue via a high speed serial link. Each application is the subject of parametering of its standard elements by modules on the hardware level, by procedures to obtain an executable code for the software. The use of this structure by ALSTHOM has been tested on many applications, including that of the trans-channel TGV in order to demonstrate the flexible assembly of the standard elements.

   AN INVERTER AND INDUCTION MOTOR TRACTION DRIVE APPLIED TO DEEP UNDERGROUND MINING LOCOMOTIVES
By J. Schultz; J. D. van Wyk; W. G. Dunford; R. B. Prest; C. F. Landy [View]
[Download]

Abstract: The environmental conditions encountered by electric traction drives in deep mines down to 4000 m are extremely harsh, due to high ambient temperatures, high humidity, dust and poor track conditions. In addition flooded sections of track are encountered from time to time. The paper describes a drive system for an 84 V battery powered mine locomotive under these conditions, consisting of a power inverter with natural cooling and a sealed induction traction motor. Specifications, a block diagram, measurements and illustrations of the developed system are given.

   APPLICATION OF EVAPORATIVE-COOLED GTO INVERTERS AND TRANSISTOR AUXILIARY INVERTERS ON A DIESEL-ELECTRIC LOCOMOTIVE
By A. Steimel [View]
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Abstract: Self-turn-off devices offer great benefits for traction inverters as they can commutate high currents independently of the amplitude of the input voltage: this enlarges the field of economic operation of the inverter. Thus GTO thyristors supersede forced-commutation in traction main drives, transistors in auxiliary drives. The expense for an GTO high-power inverter is considerably determined by the snubber circuits relieving the GTOs from switching stress and the protection against the consequences of short-circuits. The low-loss asymmetric "Undeland" snubber circuit gives the best overall performance. Immersed fluid cooling systems show great advantages for high power GTO inverters. The fluorocarbone (R113) evaporation cooling is highly effective, especially when combined with a water intermediate system. This inverter design for a 1400 kVA traction inverter is applied first on the four diesel-electric locomotives DE 1003 for Ruhrkohle AG. The auxiliary drives are equipped with three-phase motors, supplied by 4 individual transistor inverters fed from the main d.c. link via a GTO half-bridge inverter. The power applied is controlled according to the actual demand and moreover, during dynamic braking the brake energy is utilized.

   SIMULATION TECHNIQUES FOR STUDYING AC RAILWAY POWER ELECTRONIC TRACTION DRIVE CIRCUITS
By S. Burdett; J. AlIan; B. Mellit; J. A. Taufiq [View]
[Download]

Abstract: This paper presents a review of existing simulation methods and a detailed description of a variant of the tensor based simulation method. An application of this method is described and results presented from a study of power factor correction techniques. The performance of the modified tensor method compares favourably with other methods in run time, ease of use and storage space.

   COMPARISON OF CURRENT-FED AND VOLTAGE-SOURCE TRACTION DRIVE SYSTEMS WITH SEPARATELY EXCITED SYNCHRONOUS MACHINE
By Th. Reckhorn; A. Ackva; J. Ch. Bendien [View]
[Download]

Abstract: In this paper simulation programmes for a complete current-fed and a voltage-source traction drive system with separately excited synchronous machine are presented. The programmes are based on the analytical equations which describe the equivalent circuit of the synchronous machine. The relevant quantities of the machine and the inverter are calculated by iterative approach. By means of the programmes the two traction drive systems are compared with regard to their behaviour at maximum load, the resulting losses and consequentely their efficiency. Results are verified by measurements on the corresponding drive systems.

EPE 1989 - 27 - Lecture Session 3.10: TRACTION DEVICES
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1989 - Conference > EPE 1989 - 27 - Lecture Session 3.10: TRACTION DEVICES
	[return to parent folder]

	CURRENT CONTROL OF A CURRENT-SOURCE SINGLE-PHASE PWM-CONVERTER WITH LOW REACTION ON MAINS By B. Yu; U. Kunz	[View] [Download]
Abstract: This paper deals with a current source single-phase converter in pulse-mode operation with pulsewidth modulation for the use in traction technique. The control of the converter consists of two parts, the DC output current control and the AC input current control. Because of the controlled DC output current, the converter can feed DC motors directly and three-phase AC motors with an additional current source inverter. The AC input current control takes care that the line current is sinusoidal and in phase with the line voltage. Experimental results show the usability of the control scheme.

	MODULAR CONTROL WITH MICRO-CONTROLLER AND HIGH SPEED SERlAL NETWORK FOR ASYNCHRONOUS DRIVES By J. Bavard; E. Avril	[View] [Download]
Abstract: This document outlines a family of programmable controls developed by ALSTHOM for its asyncbronous drive railway applications. The desired reduction of costs and development deadlines has led to a definition of standard hardware and software elements. They are combined into a non-hierarchical structure using 16-bit micro controllers which dialogue via a high speed serial link. Each application is the subject of parametering of its standard elements by modules on the hardware level, by procedures to obtain an executable code for the software. The use of this structure by ALSTHOM has been tested on many applications, including that of the trans-channel TGV in order to demonstrate the flexible assembly of the standard elements.

	AN INVERTER AND INDUCTION MOTOR TRACTION DRIVE APPLIED TO DEEP UNDERGROUND MINING LOCOMOTIVES By J. Schultz; J. D. van Wyk; W. G. Dunford; R. B. Prest; C. F. Landy	[View] [Download]
Abstract: The environmental conditions encountered by electric traction drives in deep mines down to 4000 m are extremely harsh, due to high ambient temperatures, high humidity, dust and poor track conditions. In addition flooded sections of track are encountered from time to time. The paper describes a drive system for an 84 V battery powered mine locomotive under these conditions, consisting of a power inverter with natural cooling and a sealed induction traction motor. Specifications, a block diagram, measurements and illustrations of the developed system are given.

	APPLICATION OF EVAPORATIVE-COOLED GTO INVERTERS AND TRANSISTOR AUXILIARY INVERTERS ON A DIESEL-ELECTRIC LOCOMOTIVE By A. Steimel	[View] [Download]
Abstract: Self-turn-off devices offer great benefits for traction inverters as they can commutate high currents independently of the amplitude of the input voltage: this enlarges the field of economic operation of the inverter. Thus GTO thyristors supersede forced-commutation in traction main drives, transistors in auxiliary drives. The expense for an GTO high-power inverter is considerably determined by the snubber circuits relieving the GTOs from switching stress and the protection against the consequences of short-circuits. The low-loss asymmetric "Undeland" snubber circuit gives the best overall performance. Immersed fluid cooling systems show great advantages for high power GTO inverters. The fluorocarbone (R113) evaporation cooling is highly effective, especially when combined with a water intermediate system. This inverter design for a 1400 kVA traction inverter is applied first on the four diesel-electric locomotives DE 1003 for Ruhrkohle AG. The auxiliary drives are equipped with three-phase motors, supplied by 4 individual transistor inverters fed from the main d.c. link via a GTO half-bridge inverter. The power applied is controlled according to the actual demand and moreover, during dynamic braking the brake energy is utilized.

	SIMULATION TECHNIQUES FOR STUDYING AC RAILWAY POWER ELECTRONIC TRACTION DRIVE CIRCUITS By S. Burdett; J. AlIan; B. Mellit; J. A. Taufiq	[View] [Download]
Abstract: This paper presents a review of existing simulation methods and a detailed description of a variant of the tensor based simulation method. An application of this method is described and results presented from a study of power factor correction techniques. The performance of the modified tensor method compares favourably with other methods in run time, ease of use and storage space.

	COMPARISON OF CURRENT-FED AND VOLTAGE-SOURCE TRACTION DRIVE SYSTEMS WITH SEPARATELY EXCITED SYNCHRONOUS MACHINE By Th. Reckhorn; A. Ackva; J. Ch. Bendien	[View] [Download]
Abstract: In this paper simulation programmes for a complete current-fed and a voltage-source traction drive system with separately excited synchronous machine are presented. The programmes are based on the analytical equations which describe the equivalent circuit of the synchronous machine. The relevant quantities of the machine and the inverter are calculated by iterative approach. By means of the programmes the two traction drive systems are compared with regard to their behaviour at maximum load, the resulting losses and consequentely their efficiency. Results are verified by measurements on the corresponding drive systems.