Abstract: A rotary transformer is disclosed herein comprising a stationary portion and a rotating portion. The stationary portion includes a transformer housing, a primary coil positioned within the transformer housing and defining a central axis, and a stationary printed circuit board (PCB). The stationary PCB includes an excitation coil of an inductive position sensor and at least one sensing coil of the inductive position sensor. The rotating portion of the rotary transformer includes a rotating PCB with a secondary coil of the rotary transformer positioned on the rotating PCB. The rotating portion further includes a diode holder connected to the rotating PCB. The diode holder includes at least one target for the inductive position sensor.

Abstract: A rotary transformer with an integrated inductive position sensor is disclosed herein. The rotary transformer comprises a stationary side and a rotating side. The stationary side includes a core defining a central axis and a first printed circuit board (PCB) coupled to the core. A primary coil of the rotary transformer is positioned within the core concentric with the central axis. An excitation coil of an inductive position sensor and at least one sensing coil of the inductive position sensor is positioned on the first PCB. The rotating side includes a second PCB with a secondary coil of the rotary transformer positioned on the second PCB. Additionally, at least one target for the inductive position sensor positioned on the second PCB. The rotary transformer may be advantageously used to feed the rotor of a wound rotor synchronous machine.

Abstract: A wireless power transfer (WPT) device includes a polyphase coil network comprising a plurality of phases for transfer of high-frequency AC power, each one of the plurality of phases comprising a phase coil, wherein the polyphase coil network is configured to operate in a polyphase configuration to enable transfer of polyphase high-frequency AC power with a mating WPT device operating in a polyphase mode; and operate in a single phase interoperability configuration to enable transfer of single phase high-frequency AC power with a mating WPT device operating in a single phase mode.

Abstract: Embodiments of the disclosure provide a rotary transformer (RT) that includes a printed circuit board (PCB) and a set of secondary windings integrated with the PCB. The set of secondary windings includes a plurality traces extending over a first region of the PCB and a second region of the PCB. The plurality of traces are organized in a first positional order in the first region of the PCB. The plurality of traces are organized in a second positional order in the second region of the PCB.

Abstract: Embodiments of the disclosure provide an electric drive motor system that includes a stationary-side, a rotating-side, and a stationary-side sensor system operable to detect current on the stationary-side and send current-based sensor readings to a controller. The stationary-side further includes a compensation network. The controller is operable to perform a rotor current prediction operation operable to predict a rotor current associated with a rotor of the rotating-side based at least in part on the current-based sensor readings and a parameter of at least one component of the compensation network of the stationary-side.

Abstract: Embodiments of the disclosure provide an electric drive motor system that includes a stationary-side and a rotating-side. The stationary-side includes an only-stationary-side (OSS) compensation network. A first OSS compensation element of the OSS compensation network is operable to provide a rotating-side compensation function.

Abstract: Embodiments of the disclosure provide an electric drive motor system that includes a stationary-side, a rotating-side, and a first mounting and communications structure on the rotating-side. A secondary is winding physically coupled to the first mounting and communications structure. A rectifier system is physically coupled to the first mounting and communication structure.