Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

4 power supply sources for the experimental EFDA-JET fusion reactor

15.12.2005


JEMA has been contracted directly by the European Commission (commissioned through the European Fusion Development Agreement, EFDA) to design, construct and install 4 sources of power supply, each capable of producing 20 million watts of energy, for the European experimental fusion reactor installations located at Culham in the United Kingdom. The project is expected to last three years.



The contract is a sound example of the confidence these European agencies have in the work of JEMA, especially as this is a re-order on a previous contract in 2003 when the company supplied 2 units of these energy supply sources for the same centre.

Fusion reactions are produced within the stars at extremely high temperatures, thus generating energy in the form of light and heat, mainly with hydrogen as the raw material. In this type of reactor these reactions inside a star are being imitated in order to obtain energy. In fact the EFDAJET reactor is the largest in the world currently in operation and, as such, the reference for the scientific community throughout the world working in this field. At the same time, it is the system from which the new ITER reactor is to be developed, and which is to built thanks to an international agreement which will be the greatest scientific-technical project undertaken by mankind.


To explain in a nutshell the importance and scope of the project, the JEMA supply sources feed energy to the microwave systems that heat up the deuterium (hydrogen isotope) stored inside the reactor, with the aim of reaching a temperature of some 150 million degrees, necessary for the initiation of a fusion reaction

These power supply sources consist of special-characteristics equipment that are manufactured in a customised manner and are at the cutting edge of what is today manufacturable and the latest available technology.

Each supply source produces 20 million watts of electrical power (about 10% of the energy produced at the power station in the Basque port of Pasajes) in pulse format and using 130,000 volts d.c. power supply at 130 amperes, with high quality and precision specifications: less than 1,000 volts of error; 150 microseconds rising ramp and 7 microseconds falling ramp. Over a period of 20 seconds the power supply source is capable of generating 256 pulses, which is equivalent to short-circuiting the energy source itself on its exit.

To achieve the specifications required it has been necessary to develop a wide range of innovative elements and configurations (260,000 volt insulating transformers, high-voltage static crowbars, DSP control, refrigeration systems for water, etc.), which have required joint work with various research centres.

Irati Kortabitarte | alfa
Further information:
http://www.basqueresearch.com

More articles from Power and Electrical Engineering:

nachricht Researchers pave the way for ionotronic nanodevices
23.02.2017 | Aalto University

nachricht Microhotplates for a smart gas sensor
22.02.2017 | Toyohashi University of Technology

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

From rocks in Colorado, evidence of a 'chaotic solar system'

23.02.2017 | Physics and Astronomy

'Quartz' crystals at the Earth's core power its magnetic field

23.02.2017 | Earth Sciences

Antimicrobial substances identified in Komodo dragon blood

23.02.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>