Abstract: An electronic sensor includes a signal generator configured to output excitation signals and a variable differential transformer connected to the signal generator to receive excitation signals. Embodiments of the variable differential transformer may include a primary coil, a first secondary coil connected to the signal generator, a second secondary coil connected to the signal generator, and a core disposed at least partially in a magnetic field generated via the first secondary coil and the second secondary coil and the first excitation signal and the second excitation signal. A phase of an output signal of the primary coil may correspond to a position of the core.

Abstract: An electrical connector assembly includes a first connector member, a second connector member configured for connection with the first connector member, a first insulator disposed at least partially in the first connector member and/or the second connector member, a second insulator disposed at least partially in the first connector member and/or the second connector member, and a circuit board configured to be disposed at least partially between the first insulator and the second insulator in a connected configuration of the electrical connector assembly. The circuit board may include an electrical characteristic sensor and/or a temperature sensor.

Abstract: A gate drive circuit of a wide band gap power device (IGBT) includes a buffer, a di/dt sensing network, a turn-on circuit portion and turn-off circuit portion. The buffer, responsive to turn-on, supplies a first current via the first current path to the gate of the IGBT, and responsive to turn-off ceases the supply of the first current. The di/dt sensing network receives a feedback control signal representative of a voltage measurement across a parasitic inductance that exists between a Kelvin emitter and a power emitter of the The turn-on circuit portion, responsive to turn-on and a parasitic inductance of zero volts, supplies a second current via a second current path to the gate of the IGBT. The turn-off circuit portion, responsive to turn-off and a parasitic inductance of zero volts, discharges a gate capacitance of the IGBT through both the first current path and a third current path.

Abstract: An axial flux electric can include a motor assembly including a motor shaft, a stator assembly, and a rotor assembly. The stator assembly can include a plurality of stator cores about which a wire coil is wound, wherein one or more of the stator cores includes a stator body with an internal fluid passageway for receiving a cooling fluid.

Abstract: A compact electric motor assembly unit includes an electric motor and an integrated thermal management system. A heat exchanger may be mounted directly to the electric motor and/or form part of the motor housing. A coolant pump may be mounted directly to the electric motor, The coolant pump may be connected either to a drive shaft of the electric motor or to a gear train disposed inside of the electric motor. In certain cases, the coolant pathways for the thermal management system are all located internal of the electric motor assembly unit.

Abstract: A power converter system includes a printed circuit board having a first connector for receiving low voltage control signals and a second connector for receiving input voltages from one or more power generators and transmitting output voltages to a power distribution unit. Power devices are mounted onto the printed circuit board to manage the input voltages and to generate the output voltages. An enclosure is mounted around the printed circuit board and power devices. The power devices engage interior surfaces of the enclosure forming a conductive heat path between the power devices, the interior surfaces, and exterior surfaces of the enclosure. The heat path conductively transfers heat from the power devices to the exterior surfaces.

Abstract: A motor assembly can include a motor shaft, a stator assembly, and a rotor assembly, and can include a cooling jacket. The cooling jacket can include an inner wall facing radially inwardly towards the stator assembly and an opposite outer wall facing radially outwardly, a circumferential internal fluid passageway for allowing a cooling fluid to be pumped through an interior of the cooling jacket, the internal fluid passageway being disposed between the inner and outer walls and extending between an inlet and an outlet, a mounting pad receiving, at an opening in the outer wall, a heat generating component associated with the motor assembly, the opening being in fluid communication with the internal fluid passageway such that the cooling fluid can provide cooling to the heat generating component.

Abstract: A current sensing system includes a pre-calibrated busbar, a voltage sensor, a temperature sensor and a controller. The pre-calibrated busbar has a known resistance, a known variation in resistance with respect to temperature and known dimensions. The voltage sensor detects a difference in voltage between a first location and a second location on the pre-calibrated busbar. The temperature sensor detects an ambient temperature of the pre-calibrated busbar. The controller determines a resistance of the busbar between the first location and the second location based on the known resistance, known variation in resistance, known dimensions and the ambient temperature. The controller additionally determines a current flowing through the pre-calibrated busbar based on the difference in voltage and the determined resistance. The current sensing system has numerous applications including using the determined current to control an operating condition of a solid state circuit breaker or a solid state power controller.

Abstract: The present disclosure relates to an axial flux motor comprising a stator assembly and a rotor assembly. The axial flux motor includes stator cores having enlarged end plates. The axial flux motor also includes a cooling jacket including fins that extend between electromagnets of the stator assembly. The axial flux motor rotor assembly also includes an air cooling arrangement to provide air cooling to the stator assembly.

Abstract: The present disclosure relates to an axial flux motor comprising a stator assembly and a rotor assembly. The axial flux motor also includes a cooling jacket including fins that extend between electromagnets of the stator assembly. The axial flux motor rotor assembly also includes an air cooling arrangement to provide air cooling to the stator assembly. The axial flux motor also includes stator cores having enlarged end plates.

Abstract: A solid state circuit breaker assembly includes a transistor, a transient voltage suppression device, and a circuit board. The transistor and/or the transient voltage suppression device may be electrically connected to the circuit board. The solid state circuit breaker module may be configured to be connected to one or more non-scalable modules to regulate current. The solid state circuit breaker module may be configured to receive one or more scalable modules. The transistor and/or the transient voltage suppression device may be disposed on the circuit board in a substantially symmetrical configuration.

Abstract: An electronic sensor includes a signal generator configured to output excitation signals and a variable differential transformer connected to the signal generator to receive excitation signals. Embodiments of the variable differential transformer may include a primary coil, a first secondary coil connected to the signal generator, a second secondary coil connected to the signal generator, and a core disposed at least partially in a magnetic field generated via the first secondary coil and the second secondary coil and the first excitation signal and the second excitation signal. A phase of an output signal of the primary coil may correspond to a position of the core.

Abstract: A method of monitoring an electrical system may include providing a ground fault detection unit, operating a transformer rectifier unit to provide DC power to a load, sensing, via a current sensor, a ground current at or about an output of the transformer rectifier, and/or monitoring a sensor output from the current sensor via the ground fault detection circuit. The ground fault detection circuit may be configured to detect ground faults at frequencies of at least 30 kHz.

Abstract: An electrical system includes a ground fault detection unit including a low frequency ground fault detection circuit and a high frequency ground fault detection circuit, and/or a ground fault control unit connected to the low frequency ground fault detection circuit and the high frequency ground fault detection circuit. The ground fault unit may be configured to detect a ground fault according to an output of the low frequency ground fault detection circuit and/or an output of the high frequency ground fault detection circuit. The electrical system may include a first current sensor connected to the low frequency ground fault detection circuit and/or a second current sensor connected to the high frequency ground fault detection circuit.

Abstract: An electronic sensor includes a signal generator configured to output a first excitation signal and a second excitation signal and a variable differential transformer connected to the signal generator to receive the first excitation signal and the second excitation signal. The variable differential transformer may include a primary coil, a first secondary coil connected to the signal generator, a second secondary coil connected to the signal generator, and a core disposed at least partially in a magnetic field generated via the first secondary coil and the second secondary coil and the first excitation signal and the second excitation signal. A phase of an output signal of the primary coil corresponds to a position of the core.

Abstract: A solid state circuit breaker assembly includes a transistor, a transient voltage suppression device, and a circuit board. The transistor and/or the transient voltage suppression device may be electrically connected to the circuit board. The solid state circuit breaker module may be configured to be connected to one or more non-scalable modules to regulate current. The solid state circuit breaker module may be configured to receive one or more scalable modules. The transistor and/or the transient voltage suppression device may be disposed on the circuit board in a substantially symmetrical configuration.

Abstract: An electronic sensor includes a signal generator configured to output a first excitation signal and a second excitation signal and a variable differential transformer connected to the signal generator to receive the first excitation signal and the second excitation signal. The variable differential transformer may include a primary coil, a first secondary coil connected to the signal generator, a second secondary coil connected to the signal generator, and a core disposed at least partially in a magnetic field generated via the first secondary coil and the second secondary coil and the first excitation signal and the second excitation signal. A phase of an output signal of the primary coil corresponds to a position of the core.

Abstract: An electrical system includes a ground fault detection unit including a low frequency ground fault detection circuit and a high frequency ground fault detection circuit, and/or a ground fault control unit connected to the low frequency ground fault detection circuit and the high frequency ground fault detection circuit. The ground fault unit may be configured to detect a ground fault according to an output of the low frequency ground fault detection circuit and/or an output of the high frequency ground fault detection circuit. The electrical system may include a first current sensor connected to the low frequency ground fault detection circuit and/or a second current sensor connected to the high frequency ground fault detection circuit.

Abstract: A method of monitoring an electrical system may include providing a ground fault detection unit, operating a transformer rectifier unit to provide DC power to a load, sensing, via a current sensor, a ground current at or about an output of the transformer rectifier, and/or monitoring a sensor output from the current sensor via the ground fault detection circuit. The ground fault detection circuit may be configured to detect ground faults at frequencies of at least 30 kHz.