EPE Association: EPE 2005 - Topic 17-1: Power Electronics Systems for Industry and Physics Research

EPE 2005 - Topic 17-1: Power Electronics Systems for Industry and Physics Research
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2005 - Conference > EPE 2005 - Topic 17: ENERGY EFFICIENT POWER ELECTRONICS SYSTEMS AND DRIVES IN THE INDUSTRY AND PHYSICS RESEARCH > EPE 2005 - Topic 17-1: Power Electronics Systems for Industry and Physics Research

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   Development of a 25kV 1 Amp Direct Conversion Power Supply for High Power RF Applications
By CLARE Jon; PRYZBYLA Jan; CATUCCI Maurizio; COOK David; WHEELER Patrick; OATES Colin [View]
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Abstract: This paper is concerned with a new type of power supply for highpower RF applications for CW operation. The converter switches atzero current for high operating frequency for minimisedtransformer and filter size. Circuit operation and control arediscussed. Advantages of this topology over conventionalapproaches are discussed, along with the potential problems andproposed solutions.

   DEVELOPMENT, TEST AND LARGE PRODUCTION OF SOFT SWITCHING HIGH CURRENT POWER CONVERTERS FOR PARTICLE ACCELERATORS
By NISBET David; VOLOTINEN Heikki; BORDRY Frederick; KORHONEN Petri; MONTABONNET ValeRie; TURUNEN Rauno [View]
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Abstract: The Large Hadron Collider (LHC) is the next particle accelerator being constructed on the CERN site. The 27km long accelerator requires many high current (multi-kA) power converters to supply the superconducting magnets. This paper describes the development of a modular high current power converter, capable of supplying up to [8kA, 8V] using several current sources of [2kA, 8V] in parallel. Production aspects and test results of 200 power converters are presented and analysed.

   Five years of operational experience with digitally controlled Power Supplies for beam control at the Paul Scherrer Institut (PSI)
By JENNI Felix; KUENZI Rene; TANNER Lukas; LUEDEKE Andreas [View]
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Abstract: Precise beam control is a crucial requirement for the operation of particle accelerators. High-precision power supplies for beam guiding are essential. For the Swiss Light Source a new digital power supply control technology was developed and implemented. A large number of power supplies are equipped with this compact and flexible control system at PSI. Practical experiences of five years of operation are presented.

   Pulse operation of HPS lamps in high-frequency modulation
By VILELA JoãO; PERIN Arnaldo [View]
[Download]

Abstract: This paper presents a control technique which permits supplying HPS lamps without using inductive, capacitive or resistive elements; the current through the lamp is established by the resistance of the plasma present inside the discharge tube. The lamp was supplied in a pulsating manner at high-frequency by means of peak current control in order to stabilize the plasma’s temperature and, consequently, its conductivity. The pulses modulated at low-frequency provide improved color rendering index and correlated color temperature for the light emitted by standard HPS lamps. The current stabilization technique was implemented using the Full-Bridge converter and experimental results demonstrate this technique.

EPE 2005 - Topic 17-1: Power Electronics Systems for Industry and Physics Research
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2005 - Conference > EPE 2005 - Topic 17: ENERGY EFFICIENT POWER ELECTRONICS SYSTEMS AND DRIVES IN THE INDUSTRY AND PHYSICS RESEARCH > EPE 2005 - Topic 17-1: Power Electronics Systems for Industry and Physics Research
	[return to parent folder]

	Development of a 25kV 1 Amp Direct Conversion Power Supply for High Power RF Applications By CLARE Jon; PRYZBYLA Jan; CATUCCI Maurizio; COOK David; WHEELER Patrick; OATES Colin	[View] [Download]
Abstract: This paper is concerned with a new type of power supply for highpower RF applications for CW operation. The converter switches atzero current for high operating frequency for minimisedtransformer and filter size. Circuit operation and control arediscussed. Advantages of this topology over conventionalapproaches are discussed, along with the potential problems andproposed solutions.

	DEVELOPMENT, TEST AND LARGE PRODUCTION OF SOFT SWITCHING HIGH CURRENT POWER CONVERTERS FOR PARTICLE ACCELERATORS By NISBET David; VOLOTINEN Heikki; BORDRY Frederick; KORHONEN Petri; MONTABONNET ValeRie; TURUNEN Rauno	[View] [Download]
Abstract: The Large Hadron Collider (LHC) is the next particle accelerator being constructed on the CERN site. The 27km long accelerator requires many high current (multi-kA) power converters to supply the superconducting magnets. This paper describes the development of a modular high current power converter, capable of supplying up to [8kA, 8V] using several current sources of [2kA, 8V] in parallel. Production aspects and test results of 200 power converters are presented and analysed.

	Five years of operational experience with digitally controlled Power Supplies for beam control at the Paul Scherrer Institut (PSI) By JENNI Felix; KUENZI Rene; TANNER Lukas; LUEDEKE Andreas	[View] [Download]
Abstract: Precise beam control is a crucial requirement for the operation of particle accelerators. High-precision power supplies for beam guiding are essential. For the Swiss Light Source a new digital power supply control technology was developed and implemented. A large number of power supplies are equipped with this compact and flexible control system at PSI. Practical experiences of five years of operation are presented.

	Pulse operation of HPS lamps in high-frequency modulation By VILELA JoãO; PERIN Arnaldo	[View] [Download]
Abstract: This paper presents a control technique which permits supplying HPS lamps without using inductive, capacitive or resistive elements; the current through the lamp is established by the resistance of the plasma present inside the discharge tube. The lamp was supplied in a pulsating manner at high-frequency by means of peak current control in order to stabilize the plasma’s temperature and, consequently, its conductivity. The pulses modulated at low-frequency provide improved color rendering index and correlated color temperature for the light emitted by standard HPS lamps. The current stabilization technique was implemented using the Full-Bridge converter and experimental results demonstrate this technique.