Inductive high-power energy transfer in
CT scanners

Traditional slip ring technology used to transfer power to the rotating part of a CT gantry is approaching its limit with the latest scanners. To support Philips’ future development of CT scanners, Philips Applied Technologies developed a first-of-a-kind contactless energy transfer system for powering the X-ray generator on the rotating part of the CT gantry.

Optimization with minimized redesign

A major constraint of the new design was the need for it to be accommodated in the circular space currently occupied by the slip rings to minimize redesign of the CT gantry. This was achieved using circular arrays of off-the-shelf standard ferrite E-cores glued into the two gantry halves. Philips Applied Technologies is now looking into developing the system further to reduce the weight of the rotating gantry half.