Abstract: An uninterruptible power supply (UPS) system with stranded power recovery has a plurality of UPS modules with one or more of the UPS modules usable to provide stranded power to a recovered power bus. When a UPS module is used to provide stranded power to the recovered power bus, the AC/AC converter associated with that UPS module provides AC power that is synchronized with AC power being provided to the recovered power bus by each of the other AC/AC converters that are providing AC power. In this manner all of the AC/AC converters that are providing AC power to the recovered power bus have the same voltage, the same frequency, and are in phase.

Abstract: A body-worn hub may detect that a first battery charge level of a first battery in a body-worn device connected to the body-worn hub via a wired connection is at or below a first battery charge level threshold. Accordingly, the body-worn hub may route power from the body-worn hub to the body-worn device via the wired connection to charge the first battery when a second battery charge level of a second battery in the body-worn hub is above a second battery charge level threshold. However, in response to the first battery of the body-worn device being charged to a third battery charge level that is above the first battery charge level threshold or the second battery charge level dropping to the second battery charge level threshold, the body-worn hub may stop routing power to the body-worn device via the wired connection.

Abstract: A system and method of managing a power infrastructure having a plurality of duty power modules (DPMs) configured to power a plurality of load centers. Various different operational modes may be deployed. Inherent redundancy mode is implemented by: monitoring operations of the power infrastructure; powering each load center during normal operations using DPMs through a load center switch via an enabled preferred setting (PS) input; providing an inherent redundancy (IR) bus coupled to each load center switch via an alternate setting (AS) input that is disabled during normal operations, wherein the IR bus is configured to receive excess capacity power exclusively from the DPMs; and in response to a detected DPM failure, disabling the PS input and enabling the AS input in the load center switch for an affected load center to capture power from the IR bus.

Abstract: An auxiliary power supply device for an inverter with a plurality of power modules connected in parallel is disclosed. The auxiliary power supply device includes: a plurality of soft-start circuits, each coupled to a DC port of a corresponding power module; a plurality of distributed auxiliary power supplies, each having an input terminal coupled to the DC port of the corresponding power module; and a centralized auxiliary power supply having an input terminal coupled to an AC side of the inverter, and an output terminal coupled to a DC side of the inverter. By replacing auxiliary power supplies on the AC sides of all power modules with the centralized auxiliary power supply and omitting soft-start circuits on the AC sides of all power modules, the present invention improves system performance in cost, volume, loss, and electromagnetic compatibility.

Abstract: An apparatus for defining an AC power source having a predetermined amperage rating and for use with a pallet truck or fork lift lifting device. The apparatus includes a pair of terminal banks, a battery, a converter adapted to change DC to AC power, a relay, a controller, and a base adapted for engagement by the lifting device for transport of the apparatus. The apparatus is shaped so that it can be transported by the lifting device through a doorway. A pair of terminal banks, battery, converter, relay and controller are coupled to one another and configured for selective operation in a standalone configuration or a stacked configuration.

Abstract: Examples of the disclosure include an uninterruptible power supply comprising an input configured to be coupled to a power source, an output configured to output power to a load, a main controller, a main logic power supply, an auxiliary logic power supply, and an auxiliary controller configured to receive power from the auxiliary logic power supply, the auxiliary controller being configured to receive a signal indicating that the load is not powered by the uninterruptible power supply, output a first signal to initiate shutdown of the main controller and the main logic power supply, and output a second signal to power-up the main controller and the main logic power supply after a predetermined period of time elapses after outputting the first signal.

Abstract: An embodiment relates to an arrangement for equalizing voltage drops in a power supply mains having a first mains supply and a second mains supply. The arrangement includes at least one first converter system and one second converter system, to which intermediate circuits are coupled and which form a mains coupling as a result. The first mains supply is connected to a distributor via a decoupling inductor, a voltage measurement and a first switch. The second mains supply is connected to the distributor via a second switch, and wherein the mains coupling is arranged parallel to the second switch.

Abstract: Apparatus and methods are provided for a welding-type power system that includes an engine comprising a starter battery. An electric generator is turned by the engine. A power bus connects an output of the generator to a welding-type output. A sensor measures a power demand on the power bus. A controller is configured to control the engine to adjust speed in response to a measured power demand on the power bus, and to control a converter to connect the starter battery to output power to the power bus in response to the measured power demand.

Abstract: A case opening recording apparatus which, in a mechanical apparatus having a circuit board provided with an electric circuit, and a case capable of housing the circuit board, records whether or not the case is removed from the circuit board, and the case opening recording apparatus includes: a current path provided in the case; an auxiliary power supply provided in either the circuit board or the case and different from a main drive power supply of the mechanical apparatus; a state holding unit in which a state signal to be held is switched when received voltage changes; and a connection unit configured to electrically connect the auxiliary power supply to the state holding unit via the current path when the circuit board is housed in the case, and electrically disconnect the auxiliary power supply from the state holding unit when the circuit board is not housed in the case.

Abstract: A method of testing a distribution center bus system having one or more of the following features: (a) opening a reserve bus breaker between a reserve bus UPS and a reserve bus, (b) initiating a self-test mode at the reserve bus UPS, (c) routing current through the reserve bus UPS, the reserve bus, a reserve bus static bypass circuit back to the reserve bus UPS, (d) testing the reserve bus to detect heat, determine any significant current loss, or identify other attributes suggesting failure, (e) identifying if a primary bus static transfer switch has tripped over to the reserve bus, and (f) terminating the self-test at the reserve bus UPS if the primary bus static transfer switch has tripped.

Abstract: An airport ground power unit for supplying electric current to an aircraft parked on the ground, a method of operating the ground power unit, a system for supplying electric current to an aircraft parked on the ground, a method of operating such system, and a Y-adaptor.

Abstract: Various implementations power homes and businesses without needing to connect to electric utility company-provided power, i.e., they can operate off-grid. Generally the system includes solar panel racks (e.g., photovoltaic cells on sheets stabilized using ballasts, anchors, or mounting) that generate electrical power used to provide power to a building or that is stored on batteries. The system includes the solar panel racks and an enclosure to be installed at the premises and separate from the building. The enclosure includes the batteries and inverters that are electronically connected to the solar panel racks and batteries. The inverters are configured to convert direct current (DC) electricity from the solar power racks and batteries to alternating current (AC) electricity to provide power to the building via wires electrically connecting the inverters to the main panel of the building.

Abstract: A method for controlling an electrical consumer is provided. The electrical consumer is coupled to an electricity supply grid using a frequency converter. The electricity supply grid has a line voltage and is characterized by a nominal line voltage. The electricity supply grid is monitored for a grid fault in which the line voltage deviates from the nominal line voltage by at least a first differential voltage. When the grid fault occurs, the electrical consumer remains coupled to the electricity supply grid, and a power consumption of the electrical consumer is changed on the basis of the deviation of the line voltage from the nominal line voltage.

Abstract: An immersion liquid cooling tank assembly includes a generally elliptical tank, at least one condenser including a plurality of condenser tubes, at least one cooling fan adjacent to the condenser, a manifold system coupled to the at least one condenser to assist in distributing liquid flow to and from the plurality of condenser tubes, and a top cover disposed over the generally elliptical tank. The top cover includes an air baffle.

Abstract: A power conversion circuit for an uninterruptible power system, including an inductor, a first capacitor, a second capacitor, a first switch, a second switch, a third switch, a first diode, a second diode, and a third diode body, is provided. A terminal of the second switch is electrically coupled to the inductor through the first switch, and another terminal of the second switch is electrically coupled to a neutral wire and the third switch. An anode and a cathode of the first diode are electrically coupled to the first switch and a positive DC bus, respectively. A cathode and an anode of the second diode are electrically coupled to the first switch and the third switch, respectively. A cathode and an anode of the third diode are electrically coupled to the third switch and a negative DC bus, respectively. In addition, an uninterruptible power system using the same is provided.

Abstract: A vehicle control unit (e.g., a control unit for an automobile) receives feedback from an intelligent voltage/current sensor and a DC/DC controller. The DC/DC controller comprises a first switch for controlling power from a primary power source (e.g., low voltage power supplied from a high voltage battery). The intelligent voltage/current sensor senses power output from the primary power source. The vehicle control unit processes feedback from the intelligent voltage/current sensor and/or the DC/DC controller to determine if a failure has occurred in the primary power source. In response to determining the failure in the primary power source, the vehicle control unit disables the power from the primary power source using a second switch (e.g., a switch in a relay).

Abstract: A fast charging station for a marine vessel battery on a marine vessel is provided. The fast charging station includes a dock battery, a charger that is operatively coupled to a power source and the dock battery, and an enclosure located on a dock structure in a body of water. The enclosure is configured to encapsulate the dock battery and the charger. The charger is configured to charge the dock battery using the power source when the marine vessel is not docked to the dock structure. The charger is further configured to charge the marine vessel battery using the power source and the dock battery when the marine vessel is docked to the dock structure.

Abstract: The present invention provides a system comprising PoE apparatus including midspans, switches and routers that can provide high powered PoE connections that enable the recovery of DC power in sufficient quantities that allow it to be converted to AC power by way of an inverter. The invention also provides a method for providing AC power, data and light to office workstations using a single PoE connection. The invention further comprises a common mode signaling system that operates independently of any TCP/IP signal transmitted through an Ethernet connection wherein said signaling system is adapted to communicate with and control PoE powered devices.

Abstract: A modular in vitro diagnostics (IVD) vessel mover system providing redundant power management includes a plurality of modules which are configured to provide storage to one or more IVD samples. Each module comprising a power failover switch which is configured to receive internal power from an internal primary power source and transmit backup power to one or more of the plurality of modules.

Abstract: Methods, systems, and devices for power electronics-based (PE-based) battery management. A system may include a set of battery strings, where each battery string may include a set of battery modules, and where each battery module may include a set of battery cells. The system may also include a set of power converters, where each power converter may be coupled with at least one battery string. A power electronics-based (PE-based) BMS may provide one or more battery management functions for at least one corresponding battery string while also monitoring or controlling a corresponding power converter.

Abstract: A sleep monitoring circuit and a sleep monitoring apparatus are provided, in the circuit: a bidirectional receiving unit includes an electrode pad, and when the electrode pad receives a power supply signal, a handover control unit generates a charging control signal according to the power supply signal, so as to control a charging unit to perform charging management; when the electrode pad receives a bioelectric signal, a command acquisition unit acquires from a user a sleep monitoring command, so as to trigger an enabling unit to generate a monitoring handover signal, the handover control unit outputs a bioelectric signal to a bioelectric signal pick-up unit according to the monitoring handover signal, causing the bioelectric signal pick-up unit to extract feature information from the bioelectric signal and output same to a sleep monitoring unit, and the sleep monitoring unit generates a person sleep monitoring result according to the feature information.

Abstract: Uninterruptible power supplies (UPS) and control methods are disclosed. The UPS can deliver power from a first source, such as AC grid power, under normal operating conditions and a from second source, such as batteries, if power from the first source is unavailable or unsuitable. The UPS can also allocate power to and among various connected loads and can supply supplemental power to a load if that load has surpassed its regular power allocation. For example, when the power output or demand from the loads exceeds the available incoming power from the first power source, supplemental power may be supplied from the second source. Thus, the UPS can support temporary surges in power demand by apportioning power among loads and by temporarily engaging all available power sources, if needed.

Abstract: Delivery of power to one or more servers is controlled by energizing a control circuit and transmitting, from the control circuit to a first power source, a first signal indicating that the control circuit is energized. After transmitting the first signal indicating that the control circuit is energized, the control circuit receives a second signal indicating that the first power source is ready to provide power. The control circuit also receives, from a server, a third signal indicating that the server is energized. Having received the second signal indicating that the first power source is ready to provide power and the third signal indicating that the server is energized, the control circuit transmit to the server a fourth signal indicating that the server may start receiving power from the first power source.

Abstract: Provided is an uninterruptable power supply device. An uninterruptable power supply device 100, which is provided between a commercial power system 10 and an essential load 30 and which provides AC power to the essential load 30, wherein the uninterruptable power supply device 100 is provided with: a power supply unit 2, which has a power converter 22 and a storage battery 21 and which is connected to a power line L1; an open switch 3 for opening the power supply line L1; a system abnormality detection unit 5 for detecting a system abnormality, which is at least one of voltage rise, phase fluctuation, voltage imbalance, harmonic abnormality, and flicker, in addition to at least one of frequency fluctuation and voltage drop including instantaneous voltage drop; and a control unit 6 which, opens the open switch 3 and supplies AC power to the essential load 30.

Abstract: A power supply system with UPS, PCS and circuit diagnosis capabilities is disclosed, including: a DC-bus connected to a voltage/current (V/I) meter, a battery energy storage system (ESS) container, a power conditioning system (PCS), at least one current translation unit, and an energy management controller (EMC), wherein, the V/I meter is used to monitor the voltage and current of the DC-bus, and the PCS performs bi-directional conversion between the DC current from the DC-bus and the AC power from an external distribution panel, the current translation unit translate the DC current from the DC-bus into a voltage suitable for at least a critical load, and the EMC controls the operation of the V/I meter, the battery ESS container, the PCS, and the at least one current translation unit, respectively.

Abstract: Systems, circuits, and methods to mitigate effects of short-term power losses in medical systems are provided. An exemplary surgical system includes a fluidics subsystem, a surgical instrument subsystem that couples to a surgical instrument and a power supply subsystem coupled to the surgical instrument subsystem. The power supply subsystem includes a main power supply connectable to AC mains to generate a voltage, a power bus connected to the main power supply, an alternate power supply, and a circuit that monitors the voltage on the power bus for powering the surgical instrument subsystem. The circuit automatically connects the power bus to the alternate power supply when the voltage drops below a reference voltage due to a power loss from the main power supply.

Abstract: A method is for a network synchronization of a permanently excited three-phase machine including a soft starter, including thyristors, and mechanical bypass contacts for bridging the thyristors in the network operation. The method includes generating a first control signal, to initiate switching the mechanical bypass contacts to become conductive, after a criterion is reached while running up the three-phase machine on the soft starter, a time at which the first control signal is generated representing actuation time of the bypass contacts; generating ignition pulses for the thyristors within a time period, running from the actuation time to a contact time of the bypass contacts, using a second control signal; and operating the three-phase machine in the network operation via the bypass contacts. Each ignition pulse for a thyristor is generated when a phase current measurement indicates that the current strength in the assigned phase has fallen below a threshold value.

Abstract: An adaptive aircraft electrical power distribution system includes an aircraft power source, a power connector, an aircraft power distribution bus, and a bidirectional power controller. The aircraft power source is operable to generate and supply electrical power. The power connector is mounted on a fuselage of the aircraft. The aircraft power distribution bus is operable to distribute electrical power to an aircraft electrical load. The bidirectional power controller is mounted in the aircraft and is electrically coupled to the aircraft power source, the aircraft power connector, and the aircraft power distribution bus. The bidirectional power controller is configured to: sense when the aircraft power source is generating and supplying electrical power, sense when electrical power is being supplied to the power connector from an external power source, and selectively couple at least one of the aircraft power source or the power connector to the aircraft power distribution system.

Abstract: A maintenance bypass (MBP) system for an uninterruptible power supply (UPS) includes a first switch having at least three positions that provide different couplings of a power source, a load, a power input of a UPS and a power output of a UPS and including a first contact set configured to indicate at least one transition between positions of the at least three positions. The system further includes a second switch configured to enable transition of the first switch between at least two of the positions and including a second contact set configured to indicate actuation of the second switch. The first switch may include a rotary switch and the second switch may include a pushbutton switch.

Abstract: The present disclosure discloses a control processing method for an inverter device having an H5 topological structure. The control processing method includes: when a power grid supplies power normally, using a unipolar H5 PWM modulation mode to enable the inverter device to work in a grid-connected power generation mode; when the power grid supplies power abnormally or the power grid is in outage for a short time, using a unipolar H5 PWM constant-voltage modulation mode to enable the inverter device to work in an off-grid power generation mode; and when the power grid is in outage for a long time, using an H5-1 PWM constant-voltage modulation mode to enable the inverter device to work in an emergency SPS power generation mode.

Abstract: An object of the present invention is to improve availability when a power is lost. In a power conversion device 1, a gate drive power supply circuit 50 can supply a gate drive power within a predetermined normal voltage range. A backup power supply circuit 70 supplies the gate drive power to a lower arm gate circuit 40 when a voltage of the gate drive power applied from the gate drive power supply circuit 50 to the lower arm gate circuit 40 falls below a normal voltage range. When the gate drive power is supplied from the backup power supply circuit 70, the lower arm gate circuit 40 drives a lower arm switching circuit 22 in a short state in which all switching elements of the lower arm switching circuit 22 are turned on.

Abstract: A power supply system includes a housing comprising internal power circuitry; a receptacle panel removably coupled to the housing; and a circuit interrupter, such as a circuit breaker or fused disconnect switch, held in the housing. The circuit breaker includes a switch handle that is externally accessible and configured to allow a user to translate the switch handle between OFF and ON positions, the OFF position associated with electrical isolation of the power receptacle panel from a power output path between the receptacle panel and the internal power circuitry. In the OFF position, even when the power supply system is in an ON state, the receptacle panel is in electric isolation from the internal power circuitry and de-energized to thereby allow a user to remove the receptacle panel to thereby allow a hot swap with another receptacle panel.

Abstract: A press device includes a press device main body and a main breaker to supply or stop power from an external power supply to the press device main body. The press device main body includes a slide, a bolster disposed below the slide, a servomotor configured to drive the slide, a power storage unit able to supply stored power to the servomotor, a discharge unit configured to discharge a charge stored in the power storage unit, and a first contactor. An upper die can be mounted on the slide. A lower die can be disposed on the bolster. The first contactor interrupts an electrical connection between the power storage unit and the discharge unit in an energized state and electrically connects the power storage unit and the discharge unit in a non-energized state. The first contactor is supplied with power for energization from the external power source without passing through the main breaker.

Abstract: A bicycle light that is constructed and arranged to be supplied with input electrical power. The power can be supplied by multiple power sources, or not. When there are multiple power sources, the bicycle light includes a circuit that is adapted to deliver power to the light source from any of the power sources. The bicycle light can have an electrical power output, and a circuit that is adapted to deliver power to the light source and the power output.

Abstract: As an example, a power supply may provide a particular voltage of multiple voltages based on a power profile provided by a universal serial bus Type C (USB-C) integrated circuit (IC) built-in to a USB-C port of a computing device. A power factor correction (PFC) converter may provide an output voltage that varies according to the power profile. The output voltage of the PFC converter may be used as an input to an inductor-inductor-capacitor (LLC) converter. The LLC converter may produce an output voltage that varies in voltage level proportionally to the PFC converter output voltage. The PFC converter may provide a voltage to the LLC converter that causes the LLC converter to provide an amount of voltage indicated in the power profile sent by the USB-C IC of the computing device.

Abstract: An apparatus, system, and method for lighting effects, including simulating a flame. A three dimensional carrier includes an array of a plurality of light sources distributed on it. A control circuit coordinates on/off of the light sources in a manner to simulate a jumping flame. In one embodiment, the three dimensional carrier and LEDs are encapsulated in an at least partially light transmissive cover. This light modular engine includes a control circuit and an interface to electrical power. The system can include the light engine in a light fixture such as an architectural fixture. The methodology can include a sequence of on/off and brightness variations for the array of light sources.

Abstract: A power control circuit includes: a lithium-ion capacitor (LIC) charged by power supplied by a power source; a first protection circuit supplying, to a first load operating using power supplied by the external power source, a first discharge current of the LIC when the power is no longer supplied from the power source; and a second protection circuit supplying, to a second load operating using the power, a second discharge current of the LIC when the power is no longer supplied. The second load operates at a lower power consumption than the first load. The first protection circuit stops supplying the first discharge current to the first load when a voltage of the LIC becomes less than a first voltage. The second protection circuit stops supplying the second discharge current to the second load when the voltage becomes less than a second voltage being lower than the first voltage.

Abstract: The disclosure is directed to a system and method for providing supplemental power to start one or more cranking motors. The supplemental starting system includes a starting-signal isolator configured to connect to one or more electrical starting-signal wires providing starting signal to one or more cranking motors, a resetting relay electrically connecting to the starting-signal isolator, a programmable logic controller (PLC) electrically connecting to the resetting relay, a supplemental battery relay electrically connecting to the starting-signal isolator and the PLC, a supplemental battery electrically connecting to the supplemental battery relay, and a positive output-terminal electrically connecting to the supplemental battery relay.

Abstract: Methods and devices optimize backup power management for network devices connected to backup power sources including two different batteries. Machine learning techniques are used to predict upcoming power outages affecting the network device based on power-related historic information and current conditions. A backup-power operation plan prescribing usage of the backup power sources during the predicted power outages is then generated. The backup-power operation plan schedules a battery among the backup power devices to be used at least twice without being recharged.

Abstract: A power distribution unit includes a circuit protection device having output terminals and a current transformer board connected to the output terminals of the circuit protection device. The power distribution unit further includes a signal board connected to the current transformer board and a measurement board connected to the signal board.

Abstract: A mobile generator includes a housing having a top portion, a first side portion, and a second side portion, wherein the first side portion includes an energy-receiving component. The mobile generator also includes an arm pivotally coupled to the housing at a first pivot point and to the first side portion at a second pivot point. A first motion controller is configured to drive rotation of the arm about the first pivot point, and a second motion controller configured to drive rotation of the first side portion about the second pivot point.

Abstract: A power system of an aircraft includes a hybrid energy storage system with at least two energy storage subsystems each having a different power-energy density, power draw characteristics and/or dissimilar configuration. A primary power unit includes an aircraft engine coupled to an electric motor and a first generator. A secondary power unit is coupled to a second generator. A bidirectional power converter is coupled to the hybrid energy storage system and one or more controllers of the electric motor, the first generator, and the second generator. A power management controller is configured to interface with the hybrid energy storage system and the one or more controllers of the electric motor, the first generator, and the second generator and perform a model predictive control to dynamically adjust one or more electric power flows through the bidirectional power converter based on an engine propulsion power demand of the aircraft engine.

Abstract: In one or more embodiments, a power distribution unit may include: multiple power distribution module (PDM) receptacles, in which each PDM receptacle is configured to receive a PDM along a longitudinal axis of the PDM receptacle and is configured with multiple conductors disposed along a plane orthogonal to the longitudinal axis; first multiple power outlets coupled to a first PDM receptacle of the multiple PDM receptacles, in which the first multiple power outlets are configured to provide first single-phase power to first multiple information handling systems housed by a rack; and second multiple power outlets coupled to a second PDM receptacle of the multiple PDM receptacles, in which the second multiple power outlets are configured to provide second single-phase power to second multiple information handling systems housed by the rack. In one or more embodiments, a monitoring device of the power distribution unit may monitor one or more environmental attributes.

Abstract: Described herein is a system for consuming, generating, storing, and delivering renewable, redundant, energy and providing backup energy storage and transmission to and from electrical load and method of using the same. The invention relates to a renewable energy consumption, generation, storage, and delivery systems and methods of using the same. A preferred embodiment of the present invention is related to use of the system to provide renewable, redundant, remote backup energy storage and transmission to a mission critical facility such as a data center or colocation facility.

Abstract: A power supply combination comprises a first power source comprising a first power rail delivering power at a first voltage and a second power rail delivering power at a second voltage. The power supply combination also comprises a second power source comprising a third power rail delivering power at the first voltage and a fourth power rail delivering power at the second voltage. A first power combining circuit is electrically connected to the first power rail and to the third power rail. The first power combining circuit delivers power at the first voltage to a first voltage input of a load. A second power combining circuit is electrically connected to the second power rail and to the fourth power rail. The second power combining circuit delivers power at the second voltage to a second voltage input of the load.

Abstract: Systems and apparatuses include an automatic transfer switch including a source pole coupled with a power source, a first load pole coupled with a first load, a second load pole coupled with a second load, a first switch selectively coupling the first load pole to the source pole, and a second switch selectively coupling the second load pole to the source pole.

Abstract: An Uninterruptible Power Supply (UPS) including an input configured to receive input AC power, a DC output configured to provide output DC power to a load, an AC output configured to provide output AC power to the load, a charger coupled to the input and configured to convert the input AC power into DC power, a DC bus, and a controller configured to monitor a current demand at the DC output relative to a demand threshold, operate, in response to a determination that the current demand at the DC output is below the demand threshold, the UPS in a first mode of operation by enabling the charger to provide DC power to the DC bus, and operate, in response to a determination that the current demand at the DC output is above the demand threshold, the UPS in a second mode of operation by disabling the charger.

Abstract: Disclosed is a low-voltage DC power distribution fast switching device. The device includes a positive output terminal electrically connected to a positive pole of a load, and no less than two switching circuits connected in parallel with each other; the switching circuit includes a positive input terminal electrically connected to a positive pole of common negative power supplies, a supplementary diode cluster composed of no less than one diode connected in series, and a thyristor connected between the positive input terminal and the positive output terminal; the positive input terminal is electrically connected to an anode of the supplementary diode cluster and an anode of the thyristor, and the positive output terminal is electrically connected to a cathode of the complementary diode cluster and a cathode of the thyristor.

Abstract: A power system of an aircraft includes a hybrid energy storage system with at least two energy storage subsystems each having a different power-energy density, power draw characteristics and/or dissimilar configuration. A primary power unit includes an aircraft engine coupled to an electric motor and a first generator. A secondary power unit is coupled to a second generator. A bidirectional power converter is coupled to the hybrid energy storage system and one or more controllers of the electric motor, the first generator, and the second generator. A power management controller is configured to interface with the hybrid energy storage system and the one or more controllers of the electric motor, the first generator, and the second generator and perform a model predictive control to dynamically adjust one or more electric power flows through the bidirectional power converter based on an engine propulsion power demand of the aircraft engine.

Abstract: A system includes a break-before-make automatic transfer switch (ATS) configured to selectively couple a utility grid and at least one distributed generator (e.g., a plurality of paralleled generators) to a load bus such that, in a state transition of the ATS, the utility grid and the at least one distributed generator are both disconnected from the load bus before the utility grid or the at least one distributed generator is connected to the load bus. The system further includes at least one converter configured to be coupled to the load bus and configured to provide power to the load bus during the state transition of the ATS.