Non-contact rotary power transfer system

The present invention refers to a control system for controlling delivery of power by a rotary transformer, the rotary system having a primary winding and a secondary winding and configured to transfer power between stationary coupling elements disposed on a stationary side and rotational coupling elements disposed on a rotating side, the control system comprising: one or more control elements disposed on the rotating side, the control elements configured to provide timing signals to the stationary side in order to control one or more power inverter stages that provide input power to the primary winding, the control elements including at least one control loop circuit configured to control delivery of power from the secondary winding of the rotary transformer, the control loop circuit further configured to close a feedback loop on desired and actual performance of output power converters that receive transmitted power from the rotary transformer and convert the received power to a desired range for the rotational coupling elements; and gate drive windings coupled to the control loop circuit and configured to transmit real time gate drive waveforms from at least some of the rotational coupling elements to at least some of the power inverter stages.