A power delivery system, comprising: a. a rotary transformer having a primary winding and a secondary winding, the rotary transformer configured to transfer power between one or more stationary coupling elements disposed on a stationary side of the rotary transformer and one or more rotational coupling elements disposed on a rotating side of the rotary transformer, the rotational coupling elements sharing a central axis with the stationary coupling elements and being adapted to rotate with respect to the stationary coupling elements, the rotary transformer comprising a plurality of the primary windings on the stationary side and a plurality of the secondary windings on the rotating side; b. a plurality of AC / AC conversion modules, each having as input mains power supply, and each output of each of said AC / AC conversion modules driving one of said plurality of primary windings of an isolation transformer; c. said isolation transformer also comprising a plurality of secondary windings, each secondary winding driving one of said primary windings of said rotary transformer; d. one or more output power converters configured to receive transmitted power from a secondary winding of said rotary transformer via parallel resonant secondary windings of an additional transformer on said rotating side, said output power converters being configured to convert the received power to a desired range for an x-ray tube coupled to said rotating side of said rotary transformer; and e. one or more control elements disposed on said rotating side of said rotary transformer, the control elements configured to control the performance of said AC / AC converters, said control elements transmitting to said stationary side of said rotary transformer one or more timing signals to control said AC / AC conversion modules via a link via electromagnetic fields. a. a rotary transformer having a primary winding and a secondary winding, the rotary transformer configured to transfer power between one or more stationary coupling elements disposed on a stationary side of the rotary transformer and one or more rotational coupling elements disposed on a rotating side of the rotary transformer, the rotational coupling elements sharing a central axis with the stationary coupling elements and being adapted to rotate with respect to the stationary coupling elements, the rotary transformer comprising a plurality of the primary windings on the stationary side and a plurality of the secondary windings on the rotating side; b. a plurality of AC / AC conversion modules, each having as input mains power supply, and each output of each of said AC / AC conversion modules driving one of said plurality of primary windings of an isolation transformer; c. said isolation transformer also comprising a plurality of secondary windings, each secondary winding driving one of said primary windings of said rotary transformer; d. one or more output power converters configured to receive transmitted power from a secondary winding of said rotary transformer via parallel resonant secondary windings of an additional transformer on said rotating side, said output power converters being configured to convert the received power to a desired range for an x-ray tube coupled to said rotating side of said rotary transformer; and e. one or more control elements disposed on said rotating side of said rotary transformer, the control elements configured to control the performance of said AC / AC converters, said control elements transmitting to said stationary side of said rotary transformer one or more timing signals to control said AC / AC conversion modules via a link via electromagnetic fields.