EPE Association: EPE 1987 - 14 - Lecture Session 1.14: GTO CONVERTERS

EPE 1987 - 14 - Lecture Session 1.14: GTO CONVERTERS
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1987 - Conference > EPE 1987 - 14 - Lecture Session 1.14: GTO CONVERTERS

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   STUDY AND REALIZATION OF 37,5 KW DOUBLE RESONANT CONVERTER USING GTO THYRISTORS SWITCHING AT 12,5 KHz
By B. Hennevin; S. Volut; A. Dupaquier [View]
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Abstract: In this paper, a new high frequency DC converter topology using GTO thyristors is described. A zero current commutation of these devices realized by double resonance principle allows reduction of switching losses. In this case, high frequency operation can be possible with good efficiency. Futhermore, only a low frequency range is needed to regulate output voltage. In the presented converter 1,2 KV - 600 A GTO are used at a frequency witch can varied from 6,7 KHz to 12,5 KHz. Design considerations and experimental results of the prototype for the CERN'S LEP project are given.

   PULSE-CONTROLLED CURRENT-SOURCE INVERTERS WITH TURN-OFF SEMICONDUCTOR DEVICES
By A. Weschta [View]
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Abstract: Pulse width modulation strategies can also be applied to current-source inverters with fast turn-off semiconductor devices. The voltage peaks accuring during the commutation of such inverters have to be limited by means of additional circuitry. The paper provides an overview of various power section circuit arrangements. A number of aspects of design and rating of the power semiconductor and snubber are examined more closely, and various control methods for PWM current-source inverters are discussed. Experimental investigations were carried out on a 15 kVA converter with transistors and a 110 kVA converter with gate-turn-off thyristors. An explanation with oscillograms is given of the steady-state and transient performance of these converters and also of a special commutation aspect.

   CHOPPER AND PWM INVERTER USING GTO'S IN DUAL THYRISTOR OPERATION
By Serge Boyer; Henri Foch; Jaqcues Roux; Michel Metz [View]
[Download]

Abstract: In the field of medium and high powers, the GTO is being considered as an increasingly important device. This tendency shows up in particular in the growing market of available devices, as well as in the increasing number of publications and realisations concerning this subject. In this paper the authors show how the best GTO performances can be achieved by using it as dual-thyristor, according to soft commutation modes and with a very high operation safety. After having defined the converter operation mode due to the use of GTO in dual thyristor configuration the authors present a structure which is well adapted to the realisation of medium power sinusoidal supplies.

EPE 1987 - 14 - Lecture Session 1.14: GTO CONVERTERS
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1987 - Conference > EPE 1987 - 14 - Lecture Session 1.14: GTO CONVERTERS
	[return to parent folder]

	STUDY AND REALIZATION OF 37,5 KW DOUBLE RESONANT CONVERTER USING GTO THYRISTORS SWITCHING AT 12,5 KHz By B. Hennevin; S. Volut; A. Dupaquier	[View] [Download]
Abstract: In this paper, a new high frequency DC converter topology using GTO thyristors is described. A zero current commutation of these devices realized by double resonance principle allows reduction of switching losses. In this case, high frequency operation can be possible with good efficiency. Futhermore, only a low frequency range is needed to regulate output voltage. In the presented converter 1,2 KV - 600 A GTO are used at a frequency witch can varied from 6,7 KHz to 12,5 KHz. Design considerations and experimental results of the prototype for the CERN'S LEP project are given.

	PULSE-CONTROLLED CURRENT-SOURCE INVERTERS WITH TURN-OFF SEMICONDUCTOR DEVICES By A. Weschta	[View] [Download]
Abstract: Pulse width modulation strategies can also be applied to current-source inverters with fast turn-off semiconductor devices. The voltage peaks accuring during the commutation of such inverters have to be limited by means of additional circuitry. The paper provides an overview of various power section circuit arrangements. A number of aspects of design and rating of the power semiconductor and snubber are examined more closely, and various control methods for PWM current-source inverters are discussed. Experimental investigations were carried out on a 15 kVA converter with transistors and a 110 kVA converter with gate-turn-off thyristors. An explanation with oscillograms is given of the steady-state and transient performance of these converters and also of a special commutation aspect.

	CHOPPER AND PWM INVERTER USING GTO'S IN DUAL THYRISTOR OPERATION By Serge Boyer; Henri Foch; Jaqcues Roux; Michel Metz	[View] [Download]
Abstract: In the field of medium and high powers, the GTO is being considered as an increasingly important device. This tendency shows up in particular in the growing market of available devices, as well as in the increasing number of publications and realisations concerning this subject. In this paper the authors show how the best GTO performances can be achieved by using it as dual-thyristor, according to soft commutation modes and with a very high operation safety. After having defined the converter operation mode due to the use of GTO in dual thyristor configuration the authors present a structure which is well adapted to the realisation of medium power sinusoidal supplies.