Abstract: A high frequency and high-speed polyphase rotary transformer construction for field excitation of WRSMs. A polyphase rotary transformer configuration may reduce the eddy current losses. Additional first and second metal rings that the rotary transformer includes further mitigate eddy currents with them being applicable to both single and polyphase rotary transformer designs. The first and second metal rings may include one or more of tapered surfaces, laminated ring configurations, surface depressions, and sectored constructions.

Abstract: A shield construction for transfer of wireless power is provided. The shield construction be a magnetic shield in the form of a border or frame with respect to aspects of a wireless transmitter or a wireless receiver. The wireless transmitter or the wireless receiver, or both, may be double-D coil based configurations.

Abstract: A receiver construction and/or a transmitter assembly is provided for transfer of wireless power. The receiver and/or transmitter assemblies may include a respective receiver or transmitter coil assembly, a backing, and a core provided between the backing and the respective receiver or transmitter coil assembly. The receiver coil assembly and/or the transmitter coil assembly may include one or more coils provided in an epoxy operable to facilitate thermal transfer from the one or more coils to at least one of the core and the backing. A thermally conductive element may be provided between the backing and the core.

Abstract: A wound rotor synchronous machine (WRSM) includes a rotary transformer. The rotary transformer has a primary coil and a secondary coil. A rotor is connected to a positive direct current (DC) output of the secondary coil and connected to a negative DC output of the secondary coil. The rotor includes a shaft. A winding is wound around the shaft. The winding includes a turn of one of the positive DC output and the negative DC output. A contactless sensor is disposed adjacent the winding and in communication with a controller.

Abstract: A component for wireless power transfer is provided with tuning capacitors integrated with coils. For instance, a single turn coil can be split into two halves and capacitance (other than self-capacitance) may be implemented by introducing a dielectric layer between portions of the two half turns.

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: A wireless power transfer (WPT) device includes an in-wheel electric motor having a rotor and a stator having at least one phase coil, a resonant network, and at least one switch configured to selectively connect the resonant network to the phase coil and disconnect the resonant network from the at least one phase coil. A processing device is configured to determine that the at least one phase coil is adjacent to at least one transmitter coil of a WPT transmitter that transmits high-frequency AC power, and operate the at least one switch to close a connection between the resonant network and the phase coil. The phase coil is configured as a receiver coil to receive the high-frequency AC power from the at least one transmitter coil when the at least one switch is closed.

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: A receiver construction and/or a transmitter assembly is provided for transfer of wireless power. The receiver and/or transmitter assemblies may include a respective receiver or transmitter coil assembly, a backing, and a core provided between the backing and the respective receiver or transmitter coil assembly. The receiver coil assembly and/or the transmitter coil assembly may include one or more coils provided in an epoxy operable to facilitate thermal transfer from the one or more coils to at least one of the core and the backing. A thermally conductive element may be provided between the backing and the core.

Abstract: A wireless power supply power supply including first tuning circuitry coupled directly to a transmitter, the first tuning circuitry including an LCC configuration. The wireless power supply may include second tuning circuitry coupled directly to switching circuitry (e.g., an inverter) of the power supply, where the second tuning circuitry may be operable to direct power from the switching circuitry to the first tuning circuitry for supply to the transmitter, and where the second tuning circuitry includes a reactance operable to establish inductive operation of the switching circuitry at the switching frequency of the switching circuitry.

Abstract: A shield construction for transfer of wireless power is provided. The shield construction may be a magnetic shield having a plurality of layers and provided for a wireless transmitter or a wireless receiver, or both. The magnetic shield may include a first layer and a second layer, where the first layer may be nearer to a core than the second layer, and where the second layer may include a second layer area that is larger than a first layer area of the first layer. The wireless transmitter and the wireless receiver may be configured to multi-phase wireless power transfer.

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.

Abstract: A shield construction for transfer of wireless power is provided. The shield construction may be a magnetic shield having a plurality of layers and provided for a wireless transmitter or a wireless receiver, or both. The magnetic shield may include a first layer and a second layer, where the first layer may be nearer to a core than the second layer, and where the second layer may include a second layer area that is larger than a first layer area of the first layer. The wireless transmitter and the wireless receiver may be configured to multi-phase wireless power transfer.

Abstract: A shield construction for transfer of wireless power is provided. The shield construction be a magnetic shield in the form of a border or frame with respect to aspects of a wireless transmitter or a wireless receiver. The wireless transmitter or the wireless receiver, or both, may be double-D coil based configurations.