EPE Association: EPE 1987 - 26 - Lecture Session 4.1: INDUSTRIAL APPLICATIONS (I)

EPE 1987 - 26 - Lecture Session 4.1: INDUSTRIAL APPLICATIONS (I)
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1987 - Conference > EPE 1987 - 26 - Lecture Session 4.1: INDUSTRIAL APPLICATIONS (I)

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   MORE INTELLIGENT AND MORE POWERFUL: The Major Digitally-Controlled Drive Systems
By Michel Boidin; Jean-François Miguaise [View]
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Abstract: In a previous document to EPE (1985), we introduced our first generation of digitally controlled converters particularly suited to integration in a distributed automatic control-system environment. Technological developments and experience have enabled us to develop a new general maintaining continuity with previous concepts, but widening the field of applications still further by using fully digital technology, thus increasing the standardization of circuit boards and therefore of applications.

   MODULAR 2-PHASE COOLING SYSTEM FOR POWER SEMICONDUCTORS
By U. Eckes; P. Merel [View]
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Abstract: The two-phase cooling system is more and more frequently used in railway equipments. This system must be adapted to the recent evolution in semiconductor technology, with the appearance of the GTO (gate turn-off thyristor) which has had an influence on the structure of forced commutation circuits. ALSTHOM has developed a new cooling system (SMF 1), which comes in the form of an interchangeable panel. This panel performs the total function of a chopper or of one inverter arm, taking into account wiring requirements between the GTO and the auxiliary circuits. The essential elements managing this development are reliability, ease of maintenance and standardization. The system uses Freon R113, with the following advantages: no pump, a low volume and high thermal dissipation. The components are not submerged, and the evaporators are linked to a single condenser, which is designed for system average losses. Natural convection is possible. This system has been used in the underground systems in Lyon (MPL 85) and Paris (MI 84).

   FREON 113 - IMMERSED COOLING APPLICATION TO POWER SUPPLIES FOR POLOIDAL FIELD OF TORE SUPRA
By M. Frouin; J. C. Guimaud; P. Merlino [View]
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Abstract: In the present paper, the authors put forward the advantages related to cooling by immersion in FREON 113 specifically at the level of:
- Suppression of environmental constraints,
- Use of cooling fluids without special treatment,
- High level insulation,
- Significant thermal capacity, notably in pulse state,
- Dimension compactness.
These various advantages led to the achievement of the pulse power supplies for TORE SUPRA poloidal field coils (240 MW peak power) installed on the CEA Site in CADARACHE (FRANCE).

   FREON FORCED CONVECTION COOLING OF HIGH POWER SEMICONDUCTORS EQUIPMENTS
By M. Boin; M. Vignier; D. Lefebvre; J. P. Kruch [View]
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Abstract: High power semiconductors cooling systems have to be compact, safety minded and able to be used in various environments and generate only low level nuisances. That is the reason why a liquid with good specific heat capacity, perfect dielectric strength and withstanding the frost was chosen. FREON 113* meets these requirements, its boiling temperature enables its use under liquid phase and forced evaporation. Under given conditions, the FREON liquid phase cooling performances equal these of water, and are higher by forced evaporation in the heatsinks.
With FREON 113 three types of cooling are used:
- liquid phase forced convection,
- immersed condensation forced convection,
- two-phase forced convection.
(*) Trichlorotrifluoroethane commonly called FREON 113.

EPE 1987 - 26 - Lecture Session 4.1: INDUSTRIAL APPLICATIONS (I)
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1987 - Conference > EPE 1987 - 26 - Lecture Session 4.1: INDUSTRIAL APPLICATIONS (I)
	[return to parent folder]

	MORE INTELLIGENT AND MORE POWERFUL: The Major Digitally-Controlled Drive Systems By Michel Boidin; Jean-François Miguaise	[View] [Download]
Abstract: In a previous document to EPE (1985), we introduced our first generation of digitally controlled converters particularly suited to integration in a distributed automatic control-system environment. Technological developments and experience have enabled us to develop a new general maintaining continuity with previous concepts, but widening the field of applications still further by using fully digital technology, thus increasing the standardization of circuit boards and therefore of applications.

	MODULAR 2-PHASE COOLING SYSTEM FOR POWER SEMICONDUCTORS By U. Eckes; P. Merel	[View] [Download]
Abstract: The two-phase cooling system is more and more frequently used in railway equipments. This system must be adapted to the recent evolution in semiconductor technology, with the appearance of the GTO (gate turn-off thyristor) which has had an influence on the structure of forced commutation circuits. ALSTHOM has developed a new cooling system (SMF 1), which comes in the form of an interchangeable panel. This panel performs the total function of a chopper or of one inverter arm, taking into account wiring requirements between the GTO and the auxiliary circuits. The essential elements managing this development are reliability, ease of maintenance and standardization. The system uses Freon R113, with the following advantages: no pump, a low volume and high thermal dissipation. The components are not submerged, and the evaporators are linked to a single condenser, which is designed for system average losses. Natural convection is possible. This system has been used in the underground systems in Lyon (MPL 85) and Paris (MI 84).

	FREON 113 - IMMERSED COOLING APPLICATION TO POWER SUPPLIES FOR POLOIDAL FIELD OF TORE SUPRA By M. Frouin; J. C. Guimaud; P. Merlino	[View] [Download]
Abstract: In the present paper, the authors put forward the advantages related to cooling by immersion in FREON 113 specifically at the level of: - Suppression of environmental constraints, - Use of cooling fluids without special treatment, - High level insulation, - Significant thermal capacity, notably in pulse state, - Dimension compactness. These various advantages led to the achievement of the pulse power supplies for TORE SUPRA poloidal field coils (240 MW peak power) installed on the CEA Site in CADARACHE (FRANCE).

	FREON FORCED CONVECTION COOLING OF HIGH POWER SEMICONDUCTORS EQUIPMENTS By M. Boin; M. Vignier; D. Lefebvre; J. P. Kruch	[View] [Download]
Abstract: High power semiconductors cooling systems have to be compact, safety minded and able to be used in various environments and generate only low level nuisances. That is the reason why a liquid with good specific heat capacity, perfect dielectric strength and withstanding the frost was chosen. FREON 113* meets these requirements, its boiling temperature enables its use under liquid phase and forced evaporation. Under given conditions, the FREON liquid phase cooling performances equal these of water, and are higher by forced evaporation in the heatsinks. With FREON 113 three types of cooling are used: - liquid phase forced convection, - immersed condensation forced convection, - two-phase forced convection. (*) Trichlorotrifluoroethane commonly called FREON 113.