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: Provided is a capacitor module in which a plurality of film capacitor cells and a pair of bus bars are housed in a metal case to be integrated with a resin added in the metal case, and an electrical insulating film is formed at least on an inner surface of the metal case or each of outer surfaces of the pair of bus bars. The capacitor module is provided in an inverter device including an inverter circuit that converts DC power into AC power. The inverter device is provided in a motor module including an AC motor rotationally driven by AC power supplied from the inverter device, and the motor module is provided in a vehicle including an electric drive system.

Abstract: A coil component includes a core including a winding core portion, a first flange portion, and a second flange portion, and a first wire and a second wire that are wound around the winding core portion in the same direction and that form a winding portion. The winding portion includes a second intersecting portion along a third side surface of the winding core portion at a position on the winding portion nearest to the second flange portion.

Abstract: According to an embodiment, a current monitoring circuit includes a signal shaping unit configured to receive a current sense signal and provide a modified current signal; a filter configured to receive the modified current signal and to provide a respective filtered signal; a comparator configured to receive the filtered signal and a threshold value and to indicate when the filtered signal exceeds the threshold value. The signal shaping unit is configured to calculate a level of the modified current signal from a corresponding level of the current sense signal in accordance with non-linear function.

Abstract: A system includes a first generator configured to output a first plurality of AC signals; a second generator configured to output a second plurality of AC signals; a first set of rectifiers configured to convert the first plurality of AC signals into a first plurality of DC signals for output onto a first DC bus, wherein each of the first set of rectifiers includes a respective contactor configured to de-couple a DC output of the respective rectifier from the first DC electrical bus; and a second set of rectifiers configured to convert the second plurality of AC signals into a second plurality of DC signals for output onto a second DC bus, wherein each of the second set of rectifiers includes a respective contactor configured to de-couple a DC output of the respective rectifier from the second DC bus.

Abstract: A wireless sensor network gateway includes safe side circuitry, hazardous side circuitry and isolation circuitry, which are supported by a housing. The safe side circuitry includes a safe side power circuit, and a safe side data input/output (I/O) circuit. The hazardous side circuitry includes a hazardous side power circuit, and a hazardous side data I/O circuit. The isolation circuitry divides the safe side circuitry from the hazardous side circuitry. The isolation circuitry includes a power isolation circuit that couples the safe side power circuit to the hazardous side power circuit and forms an intrinsic safety barrier between the safe side power circuit and the hazardous side power circuit, and a data isolation circuit that couples the safe side data I/O circuit to the hazardous side data I/O circuit and forms an intrinsic safety barrier between the safe side data I/O circuit and the hazardous side data I/O circuit.

Abstract: Examples described herein provide a method that includes determining whether a charging station for charging a battery of a vehicle is operating in a first high voltage mode or a second high voltage mode. The method further includes, responsive to determining that the charging station is operating in the first high voltage mode: enabling an electric motor and a traction power inverter of the vehicle to operate as a boost converter to boost an accessory bus voltage of the vehicle while charging in the first high voltage mode, and charging the battery of the vehicle by supplying electric power, at a first high voltage, from the charging station to the battery.

Abstract: A power reception control method for a power storage element controls element-receiving electric power received by the power storage element in an electric power system for supplying electric energy to a load group including plural power storage elements. The power reception control method acquires differential electric power by subtracting a current value of total transmitted electric power from a maximum value of the total transmitted electric power that is an available amount to be supplied to the entire load group via an electric power supply base point, calculates a degree of priority of the power storage element in accordance with a numerical value indicating a demand of a user, multiplies the differential electric power by the degree of priority to calculate element differential electric power, and adds the element differential electric power to the previous element-receiving electric power so as to update the element-receiving electric power.

Abstract: A field device includes: a current controller configured to operate with a first power supply voltage and output a control signal for controlling a current to be output to a transmission line; a current output unit configured to operate with a second power supply voltage different from the first power supply voltage, the current output unit being capable of outputting a current of a magnitude corresponding to the control signal output from the current controller to the transmission line; and an abnormality notification unit configured to output, to the current output unit, a first signal for causing the current output unit to output a burnout current indicating that an abnormality has occurred in a case in which an abnormality occurs in the first power supply voltage.

Abstract: Motor vehicle on-board electrical network switch having at least two inputs for a respective one of at least two on-board power supplies, at least one output for a load of the motor vehicle, at least two switches, a first switch being disposed between a first of the inputs and a common node, and a second switch being disposed between a second of the inputs and the common node, and the output being electrically connected to the common node, wherein the switches are formed as semiconductor switches and are respectively connected with their body diodes in forward direction towards the common node, characterized in that a monitoring circuit monitors a first voltage at the first input and/or a second voltage at the second input and/or a voltage at the common node, and in that the monitoring circuit causes an opening signal for simultaneous opening of both switches depending on an amount of at least one of the monitored voltages.

Abstract: A switching device includes: a triggering unit; an actuator coupled to the triggering unit; a switching mechanism coupled to the actuator; and an interface module. The interface module includes: a signal processing unit coupled to the triggering unit; an interface circuit coupled to a transmitting and receiving circuit of the signal processing unit; a power supply input for feeding a first supply voltage; and a voltage converter connected on an input side to the power supply input and a power outlet for issuing a second supply voltage. The power outlet is coupled to the signal processing unit and to the triggering unit.

Abstract: A transport climate control system is disclosed. The system includes a compressor, a motor-generator-rectifier machine, a belt drive connected to the motor-generator-rectifier machine and the compressor, at least one condenser fan, at least one evaporator fan, and a DC to DC converter. The motor-generator-rectifier machine connects to the at least one condenser fan, the at least one evaporator fan, and the DC to DC converter. The motor-generator-rectifier machine includes a motor, a low voltage generator connected to the motor, and a rectifier connected to the low voltage generator. The motor-generator-rectifier machine can provide a first low voltage DC power to the at least one condenser fan, the at least one evaporator fan, and the DC to DC converter. The DC to DC converter can convert the first low voltage DC power to a second low voltage DC power that is different from the first low voltage DC power.

Abstract: In one aspect, a hybrid circuit protection device for current-limiting a fault current between a source and a load during a fault is provided. The hybrid circuit protection device includes an input configured to couple to the source, an output configured to couple to the load, a return configured to couple the source to the load, a main switch configured to selectively couple the input to the output, a switching network coupled in parallel with the main switch, and a controller. The controller is configured to determine that the main switch has opened in response to the fault current, where the fault current has an initial value, and activate the switching network to current-limit the fault current to less than the initial value during the fault.

Abstract: A system includes three switches each having a single pole and dual throws. The respective single pole is on a supply side of the each respective switch. The dual throws are on a load side of each respective switch, and include a respective normally open (NO) throw and a respective normally closed (NC) throw. A first voltage detector is connected from the single pole of the first switch to the NC throw of the third switch. A second voltage detector is connected from the single pole of the second switch to the NC throw of the first switch. A third voltage detector is connected from the single pole of the third switch to a NC throw of the second switch.

Abstract: The present invention is directed to an electronic switch device, the device including a housing assembly including a front cover assembly having a user accessible surface, a back body assembly, terminals configured to be coupled to an AC power source and the load; an antenna assembly including an antenna substrate disposed inside the housing assembly adjacent a portion of the front cover assembly, an antenna being disposed on the antenna substrate having a conductive grid structure; and a circuit assembly disposed inside the housing assembly coupled to the terminals, the circuit assembly comprising a printed circuit board, the printed circuit board including a ground plane, the circuit assembly being electrically connected to the antenna assembly via a conductor, the printed circuit board being separated from the antenna assembly by a predetermined distance, the circuit assembly including a relay switch having at least one solenoid winding connected to the circuit assembly and a set of contacts.

Abstract: This disclosure provides a method to limit the post-disturbance node maximum RoCoF by optimizing UC decisions. The node initial RoCoF expressions under common disturbance types, including the load, the line switching, and the generator turbine disturbances, are derived. Then, the piecewise linear relationship between the node initial RoCoF and UC decision variables are obtained. To avoid numerical simulation of the node maximum RoCoF, two analytical constraints, i.e., the node initial RoCoF constraint and the COI maximum RoCoF constraint, are formulated in the UC model.

Abstract: An arc-flash sensor may provide flexibilities for supporting both surface mounting and peek-through mounting on a panel (e.g., a wall panel or an electrical panel). The arc-flash sensor includes a translucent optical lens, a fiber-optic cable, and a skirt around the back side of the optical lens. The translucent optical lens diffuses the light produced in an arc flash to enhance the detectability of light signals picked by the fiber-optic cable. The fiber-optic cable enters parallel to the panel and perpendicular to principal axis of the optical lens. The parallel fiber-optic cable configuration reduces sensor installation space occupied and potential damage to the sensor. The skirt is used to prevent false tripping caused by unexpected events on the fiber-optic cable side such as camera flashes, lightning, sunlight, or the like.

Abstract: A system for dynamic excitation of an energy storage element configured for use in an electric aircraft includes a plurality of propulsors mechanically connected to the electric aircraft. The system includes a plurality of energy storage elements electrically connected to the plurality of propulsors. The system includes a bus element, wherein the bus element is electrically connected to the plurality of energy storage elements and a cross tie element connected to the bus element configured to disconnect a first energy storage element from a second energy storage element. The system includes a modulator unit electrically connected to the bus element configured to modulate a first electrical command to the first energy storage element and a second electrical command to the second energy storage element. The system includes at least a sensor configured to detect an energy datum corresponding to the first energy storage element as a function of the modulation.

Abstract: An electrical power system including: an electrical power source, a power electronics converter, an electrical network, a current limiting diode and a controllable circuit interruption device, wherein: the current limiting diode is configured to limit a fault current passing between the electrical power source and the electrical network in a fault condition; and the controllable circuit interruption device is configured to interrupt the fault current in response to a determination that the electrical power system is in the fault condition.

Abstract: A power supply control apparatus includes: a first system capable of supplying electric power from a first power supply to a first load; a second system capable of supplying electric power from a second power supply to a load group including a second load and a third load having consumed electric power smaller than that of the second load; a plurality of load switches as defined herein; and a control unit configured to control the load switches so that backup control performed by the second system is executed by the electric power supply from the second power supply, in a case where an occurrence of a ground fault in the first system is detected, and when the control unit inspects as to whether the backup control can be executed, the control unit connects the load switch corresponding to the third load of the load group to execute the inspection.