Abstract: A hybrid power system for an aircraft. The hybrid power system comprises a high-voltage DC (HVDC) bus and a generator-motor system configured to (1) selectively receive electric power from the HVDC bus to assist in providing propulsion and (2) provide electric power to the HVDC bus during regulated power extraction. An LPS generator/motor is coupled with an LPS shaft of an engine. An HPS generator/motor is coupled with an HPS shaft of the engine. A first AC/DC converter is connected to the LPS generator/motor and the HVDC bus. A second AC/DC converter is connected to the HPS generator/motor, the first AC/DC converter, and the HVDC bus. An electric motor is connected to the HVDC bus and configured to provide propulsion and/or electric power. Further, AC and DC distribution systems are connected to the HVDC bus. A control system is configured to selectively control connections to the HVDC bus.

Abstract: This application provides a vehicle DC voltage conversion circuit, including a high voltage battery connected in sequence, a primary-side-bridge module, a resonant module, a transformer module and a secondary-side-output module, wherein the secondary-side-output module includes a first voltage unit outputting a first voltage and a second voltage unit outputting a second voltage. The secondary side winding of the transformer is connected with the first voltage unit and the second voltage unit; The circuit also includes a driver module connected with the original side bridge module. The vehicle DC voltage conversion circuit provided in this application can not only output the first voltage, but also output the second voltage at the same time. It has the advantages of small size, high efficiency, low cost and industrialization, and can be widely used in the vehicle 48V electrical load, such as 48V vehicle electric heating system, 48V vehicle cooling fan, and so on.

Abstract: An electric power conversion system comprising: an alternating current (AC) source comprising a plurality of AC terminals for conducting AC power; a voltage source electrically coupled to the AC terminals; and a controller operably coupled to the voltage source, the controller being configured to: operate the voltage source to apply a fault reducing voltage at the AC terminals that reduces an AC line-to-line fault current (If).

Abstract: Systems and methods for dynamic control of a configuration of electrical circuits are provided. An example system includes a plurality of electric power sources and a plurality of switches configured to connect and disconnect some of the electric power sources. The system may include a controller coupled to the switches. The controller may be configured to enable and disable the switches to cause a change in a configuration of the connections between the electric power sources. The electric power sources can include at least one generator and at least two batteries. The controller can be further configured to cause a change in the configuration to connect the two batteries in series to a load for discharging and connect the two batteries in parallel to the generator for recharging.

Abstract: An automatic door operator is disclosed, including a main control circuit, an actuating unit configured to output torque, and a transmission device. The main control circuit controls operation of the actuating unit to drive a movement of a door leaf through the transmission device. The automatic door operator further includes: a DC power supply configured to supply a DC voltage VDD to the main control circuit; and a standby power switching circuit, connected in series between the DC power supply and the main control circuit, and configured to acquire a switching signal and conduct, or cut off after a preset time period ?t has been elapsed, electric current between the DC power supply and the main control circuit according to the switch signal. A method for driving the automatic door operator is also disclosed. The present disclosure realizes the purpose of saving energy and electricity of the automatic door operator, while increasing the lifetime of the main control circuit.

Abstract: A vacuum cleaner includes a vacuum motor configured to draw air through the vacuum cleaner; a battery configured to supply electricity to the vacuum motor; and a control system configured to control the supply of electricity from the battery to the vacuum motor. The control system is configured to switch the vacuum cleaner between a first power mode in which electricity is delivered from the battery to the vacuum motor at a first power level, and at least a second power mode in which electricity is delivered from the battery to the vacuum motor at a second power level which is lower than the first power level. The control system is configured to monitor the extent of operation of the vacuum cleaner in the different power modes, and to provide an alert if usage of the vacuum cleaner in the first power mode exceeds a threshold.

Abstract: An on-vehicle network system includes, for each of a plurality of zones defined in a vehicle, a zone control unit, a power distributor connected to an on-board battery, and a plurality of electronic devices supplied with power from the power distributor via a common power supply line. Each of individual relays is interposed between one of the electronic devices and a body ground of the vehicle to individually turn on and off connection between the one of electronic device and the body ground based on a control signal from the zone control unit.

Abstract: The invention relates to a buck converter comprising an input for receiving an input voltage, an output node for providing an output voltage to a load, a rectifier circuit coupled to the input, a first switch coupled between a first output of the rectifier circuit and a switching node, a second switch coupled between the switching node and a second output of the rectifier circuit, an inductor coupled between the switching node and the output, a first capacitor coupled between the first output of the rectifier and the output, a second capacitor coupled between the output and the second output of the rectifier and a controller. The controller controls the first switch and the second switch and arranged to operate the buck converter in a first mode and a second mode.

Abstract: Distributed maximum power point tracking systems, structures, and processes are provided for power generation structures, such as for but not limited to a solar panel arrays. In an exemplary solar panel string structure, distributed maximum power point tracking (DMPPT) modules are provided, such as integrated into or retrofitted for each solar panel. The DMPPT modules provide panel level control for startup, operation, monitoring, and shutdown, and further provide flexible design and operation for strings of multiple panels. The strings are typically linked in parallel to a combiner box, and then toward and enhanced inverter module, which is typically connected to a power grid. Enhanced inverters are controllable either locally or remotely, wherein system status is readily determined, and operation of one or more sections of the system are readily controlled. The system provides increased operation time, and increased power production and efficiency, over a wide range of operating conditions.

Abstract: Aspects of the present disclosure include an aircraft with auxiliary components that are powered by an external power supply. Auxiliary components may include components that are used while the aircraft is grounded. Auxiliary components may be off while the aircraft is in flight.

Abstract: A compact solid state relay (7) is provided. Solid state devices (74, 75), such as Triacs or Thyristors are used to implement the relay functionality. The device is at least partially enclosed in a housing that has pins for mounting on an electronics board. A number of “U” shaped jumpers (72) or other jumpers or wires are provided in the housing to act as heat sinks. A sub-miniature fan (70) is positioned to create an air flow over the heat sinks and dissipate heat from the device.

Abstract: A electric aircraft power distribution system includes a first battery pack connected to at least a first load and to a common bus that connects the first battery pack in parallel to at least a second battery pack; a first electrical component electrically connected between the first battery pack and the first load and configured to disconnect the first load from the first battery pack in response to current above a first threshold current, wherein the first electrical component has a first disconnection time at the first threshold current; and a second electrical component electrically connected between the first battery pack and the common bus and configured to disconnect the first battery pack from the common bus in response to current above a second threshold current, wherein the second electrical component has a second disconnection time at the second threshold current that is higher than the first disconnection time.

Abstract: Provided is a power supply system configured to supply AC power to a building. The power supply system includes a discharge assembly which is connectable to a discharge port provided in a vehicle. The discharge assembly includes a first end which receives electric power from the discharge port connected thereto, and a second end which outputs AC power. The second end of the discharge assembly is connected to the building by a single-phase three-line wiring.

Abstract: A wireless power transmitter (101) an output circuit (203, 103) comprises a transmitter coil (103) for which generates the power transfer signal a drive signal generated by a driver circuit (201) is applied. A power loop controller (209) implements a power control loop for controlling the drive signal to adjust a power level of the power transfer signal in response to power control error messages received from the power receiver (105). A mode store (213) stores a plurality of power level modes for the power receiver where each power level mode is associated with a reference power level for the power transfer signal. A mode circuit (211) adapts the drive signal to set the power level of the power transfer signal to a first reference value in response to receiving a mode request message where the first reference value corresponds to a reference power level for a first power level mode indicated in the mode request message.

Abstract: An electronic component includes external ground connections for connecting to a cable harness and internal ground connections electrically coupled to paired external ground connections so that the potential at each internal ground connection corresponds to the potential at the paired external ground connection. An analysis circuit determines on which internal ground connections first and second signal information is applied to infer a coding of the component from the pattern of the internal ground connections being supplied with the first and second potential. A combination circuit connects the internal ground connections to the external ground connections such that when a ground line of a cable harness is connected to precisely one of the external ground connections, the first signal information is applied to a respective different sub-quantity of internal ground connections depending on which of the external ground connections the ground line is connected to.

Abstract: An example electronic device includes a controller to determine a user touch detection by a power adaptor coupled to the electronic device to operate the electronic device in an AC power mode. The power adaptor may comprise a proximity sensor to detect a user touch for detachment of the power adaptor from the electronic device, and a control circuit to operate a configuration pin in a low output mode to signal user touch detection. The controller may initiate central processing unit (CPU) throttling to reduce power consumption by the electronic device. The controller may further stop CPU throttling in response to detecting that the power adaptor has been detached from the electronic device. Further, the controller may switch the electronic device to a DC power mode to operate using DC power supplied by a battery of the electronic device in response to power adaptor detachment.

Abstract: A method for controlling a power system having at least one inverter-based resource connected to an electrical grid includes monitoring, via at least one controller of the at least one inverter-based resource, one or more command signals issued by a system-level controller. The method also includes determining, via the at least one controller of the at least one inverter-based resource, whether the one or more command signals issued by the system-level controller includes oscillatory behavior characteristic of an instability. In response to determining that the one or more command signals issued by the system-level controller includes oscillatory behavior characteristic of the instability, the method includes reducing one or more gains of a volt-var regulator of the system-level controller to reduce the instability.

Abstract: A housing and/or installation frameworks for a modular multi-level energy system includes a set of similar cabinets configured for orthogonal (e.g., vertical and horizontal) alignment of the modules. The cabinets are configured so modules of a particular phase are oriented along an axis parallel to a reference plane. Modules of the same level of the multi-level arrangement but of different phases are mounted in each cabinet, arranged such that a module for each phase is a defined distance from the reference plane. The cabinets are arranged equidistant and orthogonal to the reference plane, minimizing distance for connections between modules of the same phase across multiple cabinets, and facilitating convenient addition or removal of levels. The framework also facilitates data and reference signal connections between local control devices of the modules, and between the local control devices and a master control device for the system.

Abstract: A mobility system includes: one or more controllers; one or more batteries; a switching device configured to switch connections between the one or more controllers and the one or more batteries; and a processor configured to control an order of update target controllers among the one or more controllers and batteries to supply power to the update target controllers among the one or more batteries by controlling the switching device based on at least one of relative importance of the one or more controllers, a present state of the one or more batteries, or a vehicle driving state.

Abstract: A power conversion apparatus and a method for controlling an output impedance of a power conversion apparatus are provided to resolve a prior-art problem of relatively low accuracy of a method for determining a working status of a power conversion apparatus. The method includes: adjusting the output impedance of the power conversion apparatus to a first impedance when the power conversion apparatus does not satisfy a start condition; or adjusting the output impedance of the power conversion apparatus to a second impedance when the power conversion apparatus satisfies a start condition, where the first impedance is not equal to the second impedance.