Abstract: An example connector assembly for reconfiguring the voltage output of an alternator comprises a terminal block assembly and a cartridge connected thereto. The cartridge being configured to provide an electrical connection between a first lead and a second lead of an alternator connected to the terminal block assembly. The cartridge being selectively connected to the terminal block assembly and configured to cause the connector assembly to output a first voltage. A second cartridge being selectively connected to the terminal block assembly and configured to cause the connector assembly to output a second voltage.

Abstract: A control circuit for controlling a multi-level buck converter having N pairs of switches serially connected between an input terminal and a logic ground, wherein N is an integer equal to or greater than 2. The control circuit has a comparing circuit, a selecting circuit and a delay circuit. The comparing circuit compares a voltage feedback signal indicative of an output voltage signal of the multi-level buck converter with a reference signal to generate a comparing signal. The selecting circuit generates N set signals based on the comparing signal. The delay circuit delays the N set signals to provide N delay set signals to control the N pairs of switches when the output voltage signal falls in ( 1 ± k ? % ) ? 1 N of an input voltage signal of the multi-level buck converter, ( 1 ± k ? % ) ? 2 N of the input voltage signal, . . . , or ( 1 ± k ? % ) ? N - 1 N of the input voltage signal, wherein k is a proportional coefficient.

Abstract: A power supply module having at least one inductor modules, a top PCB mounted on top of the at least one inductor modules, and at least one pair of power device chips mounted on top of the top PCB, wherein power pins and signal pins for connecting the top PCB and a board that the at least one inductor modules are attached to, are implemented by metal layers wrapping each of the at least one inductor modules.

Abstract: A system for cooling an electric motor includes a stator pole configured to retain at least one of a coil or a magnet, wherein the stator pole includes a recess and a pole retainer configured to fit inside the recess in the stator pole and to attach the stator pole to a hub. The pole retainer includes a channel extending through the pole retainer from a proximal end of the pole retainer that is configured to be mounted on the hub to a distal end of the pole retainer, a proximal mount disposed at the proximal end of the pole retainer and configured to attach the pole retainer to the hub, and a distal mount disposed at the distal end of the pole retainer and configured to connect the channel to a fluid transfer duct.

Abstract: A battery discharge current management system used for discharging battery packs. The battery discharge current management system has a voltage converting circuit and at least one switch module. The voltage converting circuit can operate at a charge mode or a discharge mode. The voltage converting circuit can serve to discharge battery packs so as to provide a master discharge current signal to other devices when it operates at the discharge mode. The voltage converting circuit further controls the at least one switch module to discharge the battery packs so as to provide at least one additional discharge current signal.

Abstract: A retention structure can be created using two or more different materials (e.g., one magnetic material, and one non-magnetic material) as a composite structure. The retention structure can include a cylindrical hoop comprising one or more one or magnetic regions tangentially alternating with one or more non-magnetic regions configured to surround and retain a plurality of magnets to a rotor, wherein the one or more magnetic regions are aligned with each one of the plurality of magnets and the one or more non-magnetic regions are aligned with one or more spaces between the plurality of magnets on the rotor. The magnetic material allows flux from the permanent magnets to flow through to the stators and the non-magnetic sections reduce leakage of magnetic flux to adjoining permanent magnets through use of non-magnetic materials. The retention structure can be fabricated using a hot isostatic press process.

Abstract: A debris capture device for use in a battery system includes a housing and a baffle arrangement. The baffle arrangement is sized and configured to capture debris that is greater than a threshold weight (e.g., 10 grams) and/or greater than a threshold size (e.g.; 0.25 inches (0.635 cm)) to prevent the debris from being exhausted out an exhaust system of the battery system. The present disclosure relates generally to thermal runaway debris capture systems, devices, and methods, and more specifically, to thermal runway capture devices for use in aviation systems.

Abstract: Various enhancements to grid-interactive inverters in accordance with embodiments of the invention are disclosed. One embodiment includes input terminals configured to receive a direct current, output terminals configured to provide an alternating output current to the utility grid, a controller, an output current sensor, and a DC-AC inverter stage comprising a plurality of switches controlled by control signals generated by the controller. In addition, the controller is configured to: generate control signals that cause the switches in the DC-AC inverter stage to switch a direct current in a bidirectional manner; measure the alternating output current; perform frequency decomposition of the output current; and generate control signals that cause the switches in the DC-AC inverter stage to switch current in a way that the magnitude of a plurality of unwanted current components is subtracted from the resulting output current.

Abstract: A blower includes a motor mounted to a frame. The frame includes wheels mounted to the frame. The blower includes a fan powered by the motor and a blower outlet. The fan is configured to expel air from the fan through the blower outlet. The blower outlet is movable in a horizontal direction and a vertical direction. The blower includes a horizontal control for controlling a horizontal position of the blower outlet. The blower includes a vertical control for controlling a vertical position of the blower outlet. Both the horizontal and vertical controls are positioned remote from the blower outlet.

Abstract: A method for testing and controlling a rapid shutdown device, and a tester are provided. The method includes: transmitting a heartbeat signal of first signal strength to a target rapid shutdown device in a target rapid shutdown module to switch the target rapid shutdown device on and testing the target rapid shutdown device using a preset testing program t, on receipt of a rapid shutdown device testing request, where all rapid shutdown devices in the target rapid shutdown module are previously off; and transmitting a heartbeat signal of second signal strength to the target rapid shutdown module to switch the rapid shutdown devices on or off, on receipt of a rapid shutdown device control request, where the first signal strength is lower than the second signal strength. The rapid shutdown devices can be tested and controlled efficiently, thereby effectively avoiding safety hazards and thus protecting workers.

Abstract: A method of fabricating a wide bandgap device includes providing a thin native substrate. An epitaxial layer is grown on a surface of the native substrate. After growing the epitaxial layer, a handle substrate is attached to the opposite surface of the native substrate by way of an interface layer. With the handle substrate providing mechanical support, wide bandgap devices are fabricated in the epitaxial layer using a low-temperature fabrication process. The handle substrate is detached from the native substrate after fabrication of the wide bandgap devices.

Abstract: An electric power system is disclosed herein. The electric power system may manage and store electric power and provide uninterrupted electric power, derived from a plurality of electric power sources, to an electric load. The electric power system may contain an energy storage unit and generator assembly. The electric power system may connect to a power grid and renewable energy sources, and may charge the energy storage unit using the power grid, renewable energy sources, and/or generator assembly. The electric power system may be configured to determine load power usage and environmental factors to automatically and continuously modify a charging protocol to, for example, provide high efficiency and/or self-sufficiency from the power grid. The electric power system may operate entirely off-grid and may provide electricity to the load without interruption to power.

Abstract: A novel converter circuit topology is disclosed. The converter circuit has a bridge circuit, a transformer, and a half-bridge current-doubler rectifier. An input end of the bridge circuit is connected to an input voltage node of the converter circuit. A reference end of the bridge circuit is connected to an output voltage node of the converter circuit. Opposing ends of a primary winding of the transformer are connected to bridge nodes of the bridge circuit. A secondary winding of the transformer serves as current-doubler inductors of the half-bridge current-doubler rectifier. A tap of the secondary winding is connected to the reference end of the bridge circuit.

Abstract: The disclosed apparatus, system, and techniques described herein allow pole retention hardware of the electric motor to also function as a cooling manifold for removing heat generated by the electrical coils. A pole retainer apparatus can include a pole retainer for retaining a pole to a hub. The pole retainer can include a proximal end mounted on the hub and a distal end. The pole retainer can include a channel extending through the pole retainer from the proximal end of the pole retainer mounted on the hub to the distal end of the pole retainer. The apparatus can include a mount located at the distal end of the pole retainer and configured to retain the pole on the hub. The apparatus can include a fluid transfer duct connected to the mount. The cooling system can be employed on TORUS Axial Flux Permanent Magnet motors, and various other motor designs.

Abstract: A method of operating a forced induction gaseous-fueled engine includes mixing gaseous-fuel and engine intake air to form a mixture at a fuel mixer. The method includes delivering the mixture to an intake manifold by at least partially bypassing a charge air cooler.

Abstract: A battery module assembly includes a first battery cell and a second battery cell. The first battery cell includes a rear surface, a side surface, and a top surface. A second battery cell also includes a front surface, a side surface, and a top surface. The front surface of the second battery cell contacts the rear surface first battery cell. A barrier contacts the side surfaces of both the first battery cell and the second battery cell.

Abstract: A battery module comprises a first electrical connector assembly disposed opposite a second electrical connector assembly. The first electrical connector assembly of a first of the battery module is configured to electrically and physically couple the second electrical connector assembly of a second of the battery module.

Abstract: Various embodiments of the present disclosure include an apparatus and systems including a cooling tube including a proximal end having a first opening and a distal end having a second opening. The cooling tube includes an intermediate portion extending between the proximal end and the distal end. The apparatus includes an interface component disposed on an exterior interface of the intermediate portion and at least partially encapsulating the cooling tube, the interface component composed of an electrically insulating and thermally conductive material. The interface component is in abutting contact with one or more heat conducting or heat generating elements of an electromechanical device.