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.

Abstract: Methods and apparatus for detecting and characterizing arc faults in an aerospace electric propulsion system and then coordinating the operation of various elements of the protection system to execute a fault-clearing sequence. In a current-based method, the arc is detected and characterized based on differential readouts from current sensors. The difference between currents measured at two ends of a protection zone are compared to a difference threshold. In a power-based method, the arc is detected and characterized based on differential readouts from voltage and current sensors. The differential voltage and current readouts are used to compute the respective powers at two ends of a protection zone. The difference between the respective powers is integrated over a period of time and then the integrated difference is compared to a difference threshold. A differential protection trip mode is invoked when the difference threshold is exceeded.

Abstract: A direct current (DC)-DC conversion system including at least one DC source, at least one source cable, a DC-DC converter, at least one output cable, and at least one DC load. Each of the at least one source cable includes a source input connector, a source output connector, and a source input cable. The DC-DC converter includes a housing, a DC-DC input connector, and a DC-DC output connector. Each of the at least one output cable includes a load input connector, at least one load output connector, and a load output cable. The DC-DC converter is operable to receive energy from the at least one source via the at least one source cable, and is operable to provide energy to the at least one DC load via the at least one output cable.

Abstract: A backup power-supply device including a control unit is provided. In a case where a main power supply is normal when an ignition is turned on, the control unit controls to turn on or off a charging circuit to charge a capacitor from the main power supply so that a voltage of the capacitor becomes constant at a target voltage and turns off the discharging circuit to stop discharging from the capacitor to a first electronic device. In a case where an abnormality occurs in the main power supply when the ignition is turned on, the control unit turns off the charging circuit to stop charging from the main power supply to the capacitor and turns on the discharging circuit to perform discharging from the capacitor to the first electronic device.

Abstract: The present disclosure relates to the technical field of vehicles, and provides an electric vehicle and an integrated controller and an integrated control system therefor. The integrated controller includes: a first control chip, including a first core and a second core, where the first core is configured to control an electronic control module to drive a motor, and the second core is used as a vehicle controller; and a second control chip, configured to control an on-board charging module, so that an external AC power supply realizes AC charging for a power battery, or the power battery realizes AC discharging to an external load through an AC charging and discharging port.

Abstract: A traffic signal back-up system assembly is provided for supplying traffic signals and other traffic control devices with electrical energy if the primary supply of electrical energy from the utility company is interrupted or disconnected. With the use of a lithium-ion battery bank, this assembly can store enough electrical energy to power a traffic signal for several days without restoration of the primary source of electrical energy. This assembly can be installed inside, on, or apart from the traffic signal control box as needed.

Abstract: Method for monitoring the distribution of power in a hybrid propulsion system comprising one or more electrical sources delivering an AC voltage, each of which is associated with an AC-to-DC controlled rectifier and one or more batteries, wherein, the AC-to-DC controlled rectifier and the battery each being connected directly to an HVDC bus supplying one or more electrical loads with power, the monitoring of the distribution of power is performed through the individual AC-to-DC controlled rectifier by a feedback loop to a power setpoint (Pref) on the basis of a measured power of the battery (Pbat) and a feedback loop to a voltage setpoint (Vref) on the basis of a measured voltage of the HVDC bus (VHVDC), either one of these two feedback loops delivering an RMS current setpoint Idref and Iqref for a feedback loop on the basis of a current (Igen) of the electrical source delivering an AC voltage.

Abstract: An example system includes an electrical energy storage system (ESS) comprising: an upper node and a lower node; a first set of battery modules that are connected in series; a second set of battery modules that are connected in series; a DC/DC converter electrically in series with the first set of battery modules between the upper node and the lower node, wherein the DC/DC converter sources electrical energy from the second set of battery modules; and a controller configured to adjust an output voltage of the DC/DC converter such that a voltage across the upper node and the lower node is maintained at a specified output voltage level.