Enable Recite

Subscribe options

Select your newsletters:

Please enter your email address:

@

Your email address will only be used for the purpose of sending you the ITER Organization publication(s) that you have requested. ITER Organization will not transfer your email address or other personal data to any other party or use it for commercial purposes.

If you change your mind, you can easily unsubscribe by clicking the unsubscribe option at the bottom of an email you've received from ITER Organization.

For more information, see our Privacy policy.

News & Media

Latest ITER Newsline

  • Neutral Beam Test Facility | Lessons learned from SPIDER, a full-size negative ion source

    SPIDER finished its first test campaign in late November 2021 and is now entering an upgrade phase. During this time, the testbed will be shut down for about on [...]

    Read more

  • Manufacturing | Korea completes a third vacuum vessel sector

    A third 40-degree sector of the ITER vacuum vessel has exited the Hyundai Heavy Industries production line in Ulsan, Korea. Sectors representing one-third of th [...]

    Read more

  • On-site coil manufacturing | Two more to go!

    In the European winding facility on site, two large poloidal field coils have already left the manufacturing line. Two others are currently advancing through th [...]

    Read more

  • Manufacturing | Completion of the first vacuum vessel gravity support

    The factory acceptance test on the first ITER vacuum vessel gravity support has been successfully completed at Haneul Engineering in Gunsan, Korea. Under the 8, [...]

    Read more

  • Technology | Hail showers in ASDEX Upgrade for ITER disruption mitigation

    Just before the 2021 Christmas holiday break, the team at the ASDEX Upgrade tokamak successfully fired frozen deuterium pellet fragments into a plasma as part o [...]

    Read more

Of Interest

See archived entries

Bringing the voltage down

The workshop, hosted by ITER's Electrical Engineering Division's Coil Power Supply Section, reunited more than 40 participants. (Click to view larger version...)
The workshop, hosted by ITER's Electrical Engineering Division's Coil Power Supply Section, reunited more than 40 participants.
High-voltage current from the French grid will be delivered to ITER's door by the tall pylons that descend, arms outstretched, from the hills of the CEA Cadarache research facility.

ITER's coil power supply system will convert the 400 kV grid voltage from these lines into controlled direct current in ITER's 22 magnet coils. The high voltage must be transformed down to a much lower voltage so it can be rectified and delivered at very high current through a huge busbar system to the magnet feeders.

A joint workshop was held at ITER from 27-28 February to discuss the instrumentation and control (I&C) for the coil power supply system; it was the first multilateral face-to-face meeting on this topic with all procurement stakeholders present: the Domestic Agencies from China, Korea and Russia and their suppliers, and ITER experts from the CODAC and Electrical Engineering Divisions—more than 40 participants in all.

The I&C system's role will be to configure the plant and allow it to be driven by the plasma control system to produce and maintain a plasma discharge. The system will also monitor and protect the plant and interconnect to the central interlock system, as well as protect personnel and the toroidal field coils from safety hazards by interconnection with the central safety system. The coil power supply system has many other interfaces, for example the pulsed power electrical network and cooling water systems.

Coordinator Jeremy Goff with Wu Yao from the Chinese supplier of the reactive power compensation system, Rongxin Power Electronic Co Ltd (RXPE). (Click to view larger version...)
Coordinator Jeremy Goff with Wu Yao from the Chinese supplier of the reactive power compensation system, Rongxin Power Electronic Co Ltd (RXPE).
The coordinator of this week's workshop, Jeremy Goff, likens the coil power supply system to the heart of ITER, pumping "lifeblood" through the ITER coils. "If the current does not flow there can be no plasma. The coil power supply system will be a huge installation and it must be very reliable. Some plant components will run continuously for weeks at a time ..."

Although the procurement for the system is shared, providing the coordinating "top layer" of the I&C system—the master control system—is the responsibility of Korean Domestic Agency.

The workshop met most of its aims: it brought together all those involved around one table, design proposals were shared, and further work identified to bring all the systems together into one. The participation of CODAC experts was highly beneficial and the next steps towards a common final design can now be taken.


return to the latest published articles