Abstract: Magnetically-assisted mechanical gear systems and other power transmission systems, and related methods of operation and assembly, are disclosed herein. In an example embodiment, such a system includes a driving gear, a driven gear, and a first magnetomotive force (MMF) source that generates a magnetic flux. A first portion of the flux is communicated between at least one driving gear teeth and at least one driven gear teeth so that one or more magnetic forces are exerted between the gears. When the first rotational movement of the driving gear alternates from being in the first rotational direction to being in a third rotational direction opposite the first rotational direction, then the driven gear is driven by the one or more magnetic forces so that the second rotational movement also alternates, and a first amount of backlash movement between the driving and driven gears is avoided or reduced.

Abstract: Electric propulsion systems, and methods of operating and implementing same, are disclosed herein. In one example embodiment, an electric propulsion system includes an electric motor, a motor drive coupled to the electric motor, and a thermal management subsystem. The electric motor is a permanent magnet synchronous motor, and the motor drive includes each of an inverter including a plurality of wide bandgap semiconductor field effect transistors (FETs), and a controller coupled at least indirectly to the FETs and configured to control the FETs by way of pulse width modulation (PWM) control. Additionally, at least a first portion of the electric motor and at least a second portion of the motor drive are cooled by the thermal management subsystem.

Abstract: Electric propulsion systems, and methods of operating and implementing same, are disclosed herein. In one example embodiment, an electric propulsion system includes an electric motor, a motor drive coupled to the electric motor, and a thermal management subsystem. The electric motor is a permanent magnet synchronous motor, and the motor drive includes each of an inverter including a plurality of wide bandgap semiconductor field effect transistors (FETs), and a controller coupled at least indirectly to the FETs and configured to control the FETs by way of pulse width modulation (PWM) control. Additionally, at least a first portion of the electric motor and at least a second portion of the motor drive are cooled by the thermal management subsystem.

Abstract: An electric motor may comprise a rotor and a stator. One or more first cables connected to a first power converter circuit of are wrapped adjacent to at least some stator teeth of a stator core to form at least a first portion of one or more coil windings. One or more second cables connected to a second power converter circuit of the plurality of power converter circuit also may be wrapped adjacent to at least some of the stator teeth to form at least a second portion of the one or more coil windings.

Abstract: This invention pertains to reliable, lightweight and efficient hybrid electric powertrain and components thereof to power hybrid electric aircraft from one or more sources of electrical energy. In particular, a novel architecture is proposed for power panels that receive, condition and distribute high levels of electrical power to and from the propulsion electric motors and the one or several sources of electrical energy. Systems and methods for architecting the power panels using efficient, reusable and modular power electronics building blocks (PEBBs) is described, along with additional systems and methods for the optimal control of the power panels and components thereof. In addition, novel systems and methods are described for the efficient and lightweight thermal management for hybrid electric powertrain components, ranging from distribution manifolds for the powertrain or power panels, to micro fluid channels for cooling electronics with extreme heat flux.

Abstract: The present disclosure to electromagnetically-controlled magnetic cycloidal gear assemblies and methods of operating same. In one example embodiment, such an assembly includes a stator that is concentric with respect to a primary axis of the assembly, and that includes a plurality of first magnetic devices, where each of those devices includes a respective electromagnet. Also, the assembly includes an input shaft that includes an offset cam, a cycloid mounted at least indirectly upon the offset cam, and an output hub. The cycloid is eccentric with respect to the primary axis and includes a plurality of second magnetic devices, and the output hub is at least indirectly rotationally coupled to the cycloid. The assembly also includes a controller coupled to each of the electromagnets by way of one or more linkages, and configured to govern at least one electric current that is passed through at least one of the electromagnets.

Abstract: An electric motor may comprise a rotor and a stator. One or more first cables connected to a first power converter circuit of are wrapped adjacent to at least some stator teeth of a stator core to form at least a first portion of one or more coil windings. One or more second cables connected to a second power converter circuit of the plurality of power converter circuit also may be wrapped adjacent to at least some of the stator teeth to form at least a second portion of the one or more coil windings.

Abstract: This invention pertains to reliable, lightweight and efficient hybrid electric powertrain and components thereof to power hybrid electric aircraft from one or more sources of electrical energy. In particular, a novel architecture is proposed for power panels that receive, condition and distribute high levels of electrical power to and from the propulsion electric motors and the one or several sources of electrical energy. Systems and methods for architecting the power panels using efficient, reusable and modular power electronics building blocks (PEBBs) is described, along with additional systems and methods for the optimal control of the power panels and components thereof. In addition, novel systems and methods are described for the efficient and lightweight thermal management for hybrid electric powertrain components, ranging from distribution manifolds for the powertrain or power panels, to micro fluid channels for cooling electronics with extreme heat flux.

Abstract: A disclosed electric motor includes a rotor and a stator. One or more first cables that are connected to a first inverter circuit of are wrapped adjacent to at least some stator teeth of a stator core to form at least a first portion of one or more coil windings. One or more second cables that are connected to a second inverter circuit of the plurality of inverter also may be wrapped adjacent to at least some of the stator teeth to form at least a second portion of the one or more coil windings.

Abstract: Briefly, example methods, apparatuses, and/or articles of manufacture are disclosed that may be implemented, in whole or in part, to facilitate and/or support one or more operations and/or techniques for a system controller for a series hybrid powertrain, such as employed for propulsion of a hybrid electric aircraft, for example.

Abstract: Electric propulsion systems, and methods of operating and implementing same, are disclosed herein. In one example embodiment, an electric propulsion system includes an electric motor, a motor drive coupled to the electric motor, and a thermal management subsystem. The electric motor is a permanent magnet synchronous motor, and the motor drive includes each of an inverter including a plurality of wide bandgap semiconductor field effect transistors (FETs), and a controller coupled at least indirectly to the FETs and configured to control the FETs by way of pulse width modulation (PWM) control. Additionally, at least a first portion of the electric motor and at least a second portion of the motor drive are cooled by the thermal management subsystem.

Abstract: Briefly, example methods, apparatuses, and/or articles of manufacture are disclosed that may be implemented, in whole or in part, to facilitate and/or support one or more operations and/or techniques for a system controller for a series hybrid powertrain, such as employed for propulsion of a hybrid electric aircraft, for example.

Abstract: An electric motor may comprise a rotor and a stator. One or more first cables connected to a first inverter circuit of are wrapped adjacent to at least some stator teeth of a stator core to form at least a first portion of one or more coil windings. One or more second cables connected to a second inverter circuit of the plurality of inverter also may be wrapped adjacent to at least some of the stator teeth to form at least a second portion of the one or more coil windings.

Abstract: An electric motor may comprise a rotor and a stator. One or more first cables connected to a first power converter circuit of are wrapped adjacent to at least some stator teeth of a stator core to form at least a first portion of one or more coil windings. One or more second cables connected to a second power converter circuit of the plurality of power converter circuit also may be wrapped adjacent to at least some of the stator teeth to form at least a second portion of the one or more coil windings.

Abstract: Active inrush current control includes activating a load, the activating causing inrush current to flow, switching a semiconductor switching device to a current limiting state in response to the inrush current flow, the current limiting state being one of at least three states of the semiconductor switching device and the current limiting state dissipating the inrush current, and switching the semiconductor device to a full current flow state in response to the dissipating, the full current flow state not inhibiting current flow.

Abstract: A ram air fan control system includes a ram air fan motor, the ram air fan motor being a pole-change induction motor with at least two pole-count configurations, a ram air fan contactor in operative communication with a first pole-count configuration of the ram air fan motor over a ram air fan conductor bus, a ram air fan power controller in operative communication with the ram air fan contactor, a common contactor in operative communication a second pole-count configuration of the ram air fan motor over a common conductor bus, the common conductor bus being separate and electrically isolated from the ram air fan conductor bus, and a common power controller in operative communication with the common contactor.

Abstract: A ram air fan control system includes a ram air fan motor, the ram air fan motor being a pole-change induction motor with at least two pole-count configurations, a ram air fan contactor in operative communication with a first pole-count configuration of the ram air fan motor over a ram air fan conductor bus, a ram air fan power controller in operative communication with the ram air fan contactor, a common contactor in operative communication a second pole-count configuration of the ram air fan motor over a common conductor bus, the common conductor bus being separate and electrically isolated from the ram air fan conductor bus, and a common power controller in operative communication with the common contactor.

Abstract: Active inrush current control includes activating a load, the activating causing inrush current to flow, switching a semiconductor switching device to a current limiting state in response to the inrush current flow, the current limiting state being one of at least three states of the semiconductor switching device and the current limiting state dissipating the inrush current, and switching the semiconductor device to a full current flow state in response to the dissipating, the full current flow state not inhibiting current flow.

Abstract: An improvement in a control for a DC link power converter includes a phase command signal generator responsive to DC power on a DC link wherein the phase command signal generator develops a phase command signal for a control of the power converter whereby a parameter the DC power is caused to approach a certain level.

Abstract: A simulator (100) of an electrical power generating system in accordance with the invention includes a programmed electrical power system simulator (104) specifying at least one simulated electrical power generating element (200) for generating electrical power and at least one simulated contactor (202, 206, 210, 212 and 216) for connecting the at least one simulated electrical power generating element to at least one simulated load bus (208), a state of the simulated elements of the simulated electrical power generating system during simulated generation of electrical power and a simulated state of elements of the electrical power generating system in response to a simulated fault condition; an input (102) for inputting data to the programmed simulator relating to the simulated operation of the electrical power generating system; and an output (106) for outputting data from the programmed simulator including a display for displaying data outputted from the programmed simulator relating to simulated operation