Abstract: A transmitter for a magnetic coupler includes a plate made of a magnetic material. A first coil and a second coil are arranged on a surface of the plate. The first coil and the second coil are disposed within a periphery of the surface of the plate. A first portion of the first coil overlaps a first portion of the second coil. The transmitter emits a magnetic field.

Abstract: This disclosure pertains to control systems used in electric power systems. In one embodiment, a plurality of intelligent electronic devices (IEDs) is configured to monitor a respective portion of an electric power system. Each IED may obtain electric power system measurements from the respective portion of the electric power system, determine electric power system operating conditions from the electric power system measurements, and transmit the electric power system operating conditions. A master controller may communicate with the plurality of IEDs. The master controller may comprise a communications interface configured to receive the electric power system operating conditions from the plurality of IEDs, a topology detection subsystem configured to determine a topology of the electric power system based on a common event detected by the plurality of IEDs, and an action subsystem configured to implement a control action or a protective action based on the topology of the electric power system.

Abstract: A wireless power transmission device includes a transmitter unit and a receiver unit. The transmitter unit converts an input DC power into an inverted AC power, the receiver unit receives the AC power through a coupling effect. A fault protection method is also provided in the present disclosure. If the receiver unit is abnormal, a main power circuit of the receiver unit is short-circuited. Then, a phase relationship between an inverted AC voltage and an inverted AC current of the inverted AC power is detected. A phase judgment signal is generated according to the phase relationship. An overcurrent judgment signal is generated according to the amplitude of the inverted AC current and a predetermined current threshold. A fault signal is generated according to the phase judgment signal and the overcurrent judgment signal. In response to the fault signal, the wireless power transmission device is controlled to shut down.

Abstract: A microprocessor-controlled rechargeable brake light control circuit is a compact package with connectors that includes a rechargeable power source, a power supply sensor, and a non-volatile memory connected to a microprocessor. When power is abruptly disconnected, as when the brake is disengaged, there still is enough power to the device from the rechargeable power source for a period of time that allows a microprocessor to store an indication, such as a time stamp, of approximately where in time the pulse sequence terminated. When the brake is again depressed and power is restored to the circuit, that time stamp may be used as a reference point to restart the pulse sequence. Pulsing of the brake light is through a MOSFET switch pulse circuit that receives vehicle power when the brake pedal is depressed and imprints a pulse pattern on that vehicle power responsive to pulse sequence command from the microprocessor.

Abstract: A redundant power supply system has power supplies and holdup control circuits. The power supplies are connected in parallel for connecting to an input capacitor of a load system. An OR-gate anti-reverse current element is connected between each of the power supplies and the input capacitor. The holdup control circuits correspondingly connect to the DC output sides of the power supplies. Each of the holdup control circuits has an inductor, an electronic switch and a controller. The inductor is connected in series to the OR-gate anti-reverse current element. The electronic switch is connected between the DC output side of the corresponding power supply and a node where the inductor and the OR-gate anti-reverse current element are connected. The controller turns on and off of the electronic switch according to the DC power output from the DC output sides, thereby prolonging the holdup time after a power failure.

Abstract: In one embodiment, a vehicle pre-charge limiting system is disclosed. The system includes an inverter, a comparator, a latch circuit, and a microprocessor. The inverter inverts a first power signal into a second power signal. The comparator receives a first measured current of the second power signal and compares the first measured current to a predetermined current value. The comparator transmits a first control signal indicative of the first measured current exceeding the predetermined current value. The latch circuit transmits a second control signal to the inverter to discontinue inverting the first power signal and transmits a first latch signal. The microprocessor receives a first sense signal indicative of current of the first power signal and transmits a third control signal to the latch circuit. The microprocessor inverts the first power signal into the second power signal for a predetermined number of output periods.

Abstract: A non-contact power supply device of the present invention includes a power supply element provided in a power supply unit, an AC power supply circuit for supplying AC power to the power supply element, a power receiving element provided in the power receiving, a power receiving circuit for outputting a received voltage, obtained by converting AC power received by the power receiving element, to an electric load, a resonance element connected to at least one of the power supply element and the power receiving element to form a resonance circuit; a power supply substrate configured to include the AC power supply circuit, a power receiving substrate configured to include the power receiving circuit, and a resonant substrate configured to include the resonant element. The non-contact power supply device having a versatile substrate configuration can be provided for multiple types of power supply elements and power receiving elements having different characteristics.

Abstract: Supplemental power systems for aircraft are described. One example is a power conversion system for an electrical power system in a twin engine aircraft having a first generator and a second generator is described. The power conversion system includes a first branch, a second branch, and a selector. The first branch has a first input, a first power converter, and a first output configured for coupling to an aircraft electrical distribution system. The second branch includes a second input, a second power converter, and a second output configured for coupling to the aircraft electrical distribution system. The selector is coupled between the first branch and the second branch. The selector is configured to selectively connect the first generator to the first branch or to the first and second branches. The selector is also configured to selectively connect the second generator to the second branch or the first and second branches.

Abstract: An electrical power system for regenerative loads may include a DC bus and an electrical actuator load, where back-driving the electrical actuator load generates regenerative electrical energy, and where the electrical actuator load is configured to transmit the regenerative electrical energy to the DC bus. The system may also include at least one additional load, where at least a portion of the regenerative electrical energy is transmitted to the at least one additional load.

Abstract: A system and method for hardware tamper detection and mitigation for a circuit breaker. The method includes detecting and mitigating a breach to a circuit breaker of an electrical power management system, wherein the circuit breaker includes a housing, an electrical circuit, and switch coupled to and controllable by the electrical circuit. An alert identifying a detected breach event at the circuit breaker is generated and transmitted to a computing device. The circuit breaker device experiencing the detected breach event is disabled in response to the alert. An electrical power management system includes a plurality of circuit breakers each having a breach detector coupled to an electrical circuit, and a switch coupled to and controllable by the electrical circuit. A circuit breaker controller controls the state of the circuit breaker as determined by the breach detector.

Abstract: A technique for power an apparatus during a mission includes powering the apparatus with a first energy storage device during a first mission segment of the mission. The first energy storage device has a first energy density and a first peak power rating. The apparatus is powered with a second energy storage device, distinct from the first energy storage device, during a second mission segment of the mission. The second energy storage device has a second energy density lower than the first energy density and a second peak power rating that is greater than the first peak power rating.

Abstract: An energy storage system for supporting dual electrical functions of a vehicle includes an energy storage unit having a plurality of energy storage modules connected in series, a plurality of sensing units for sensing state of charges of the plurality of energy storage modules, and a pair of primary voltage terminals. The series connected plurality of energy storage modules is connectable across the pair of primary voltage terminals during a key-on state of the vehicle to supply energy storage power at a first voltage level to support primary electrical functions of the vehicle. The energy storage system is further configured to select a subset of the plurality of energy storage modules during a key-off state of the vehicle to connect across a pair of secondary voltage terminals using a switch network to supply energy storage power at a second voltage level.

Abstract: A powertrain for a vehicle may include a variable voltage converter (VVC), and a controller. The VVC may include an inductor, a bus capacitor and a flying capacitor. The controller may be configured to, in response to a power demand signal exceeding a threshold, modulate switches of the VVC such that an inductor current created by a collapsing field of the inductor is directed into the flying capacitor or the bus capacitor such that a bus capacitor voltage exceeds a flying capacitor voltage, and in response to the power demand signal dropping below the threshold, modulate switches such that the flying capacitor and the bus capacitor are coupled in parallel.

Abstract: A power electronics module for operating a hybrid module for a hybrid drive unit wherein the power electronics module includes a power electronics module-side electrical signal and/or clutch actuator connection that includes a power electronics module-side contact device connected to the power electronics module for a direct connection to a hybrid module-side contact device, provided on the hybrid module, of a hybrid module-side electrical signal and/or clutch actuator connection is provided. A hybrid module and to a method for assembling a hybrid module is also provided.

Abstract: A power transmission apparatus includes a power transmission pad, a base structure, and grout. The power transmission pad for wireless power transmission has a cast resin frame, at least part of the cast resin frame being embedded in the ground. The base structure is disposed below the power transmission pad. The grout is filled around the power transmission pad, including a gap between an upper surface of the base structure and the power transmission pad.

Abstract: An electric vehicle charging circuit includes a first power converting circuit configured to provide an output current to charge an electric vehicle, a power storage device, and a second power converting circuit electrically coupled between the power storage device and a bus, and configured to bi-directionally transmit power between the storage device and the bus. The first power converting circuit includes an AC/DC converter configured to convert an AC voltage to a bus voltage to the bus, and a DC/DC converter electrically coupled to the AC/DC converter at the bus and configured to output the output current. The second power converting circuit includes an isolated bidirectional converter.

Abstract: A vehicle includes an inverter. The vehicle includes a contactor power bus configured to supply power to latching mechanisms of main and precharge contactors that are associated with the inverter. The vehicle includes a controller configured to maintain operation of the inverter and generate a sensor fault. The operation of the inverter may be maintained responsive to sensor output indicating that different portions of the contactor power bus are energized and deenergized.

Abstract: The present disclosure describes aspects of wireless power transfer for stationary applications. In some aspects, a system includes a transmitter and receiver separated by a wireless gap with a membrane. The transmitter has an inverter circuit to invert direct current (DC) power from a DC power source to alternating current (AC) power. The transmitter also has a transmitting circuit that includes a first resonant coil configured to resonate at a frequency of the AC power. The first resonant coil is also configured to wirelessly transmit the AC power across the wireless gap. The receiver has a receiving circuit that includes a second resonant coil configured to resonate based on resonance of the first resonant coil and to receive the wirelessly transmitted AC power. Additionally, the first and second resonant coils are configured as primary and secondary windings, respectively, of a transformer to transform the wirelessly transmitted AC power.

Abstract: The invention relates generally to the field of barrier control systems and in particular relates to barrier control systems, such as a garage door opener, with auxiliary power supply and auxiliary power supply for barrier control systems. A barrier control system, such as a garage door opener, with an auxiliary power supply and an auxiliary power supply for a barrier control system are described. The auxiliary power supply includes a backup battery and a light source that is operable on DC power. The auxiliary power supply includes a sensor to detect whether a DC motor of the barrier control system is powered by the backup battery, and switches on the light source upon detecting the DC motor being powered by the backup battery.

Abstract: A power source system includes a first power source, a second power source, a Direct Current to Direct Current converter, a first load including a vehicle control device configured to perform predetermined control regarding at least one of traveling, steering, and braking of the vehicle regardless of a driving operation performed by a driver of the vehicle, and an electric actuator as a control target of the vehicle control device, and connected to the first path so as to be supplied with power from the first power source, and a power source control device configured to control an operation of the Direct Current to Direct Current converter such that power is supplied to the first path from the second power source in a case where the predetermined control is performed.