SHIELDED POWER COUPLING DEVICE

摘要

One or more techniques and/or systems described herein provide a shielded power coupling device, such as may be used to transfer electric power from a stator portion of a computed tomography (CT) apparatus to a rotor portion. The shielded power coupling device comprises a rotor portion and a stator portion, separated by an airgap, respectively comprising one or more windings and a core. The shielded power coupling device further comprises a fringe field mitigation element(s) (e.g., an electrically conductive wire) that is configured to carry an induced current that creates a magnetic field that mitigates, or substantially cancels, magnetic flux generated by current in the windings that escapes from the core near the core airgap.

主权项

1. A shielded power coupling device configured to transfer electric power between a stator and a rotor, comprising:
an inductive field generating element configured to convert electric power to an inductive coupling field; an inductive field receiving element configured to convert the inductive coupling field to electric power; a primary and secondary core separated by a core airgap, and a shell, the shell comprising:
a fringe field mitigation element comprising an electrically conductive material and configured to mitigate magnetic flux generated by at least one of the inductive field generating element and the inductive field receiving element and escaping from at least one of the primary core and the secondary core near the core airgap, anda non-fringe field mitigation element.