Abstract: An insulating enclosure is disclosed, including: an opening in a side of the insulating enclosure, wherein the opening provides a conductor within a conduit passage into an interior of the insulating enclosure, wherein the conductor is to carry current from the inverter module, wherein a conductive sheath of the conduit is mechanically connected to the insulating enclosure via the opening; and a conductive liner, wherein the conductive liner provides a ground plane for components within the insulating enclosure, wherein the conductive liner covers at least a portion of the side of the insulating enclosure, and wherein the conductive liner is electrically connected to the conductive sheath of the conduit.

Abstract: A latch assembly for a closure panel and corresponding method of operation are provided. The assembly includes an actuation group to latch and unlatch the closure panel using power from a main power source during normal operation. A first backup energy source is selectively coupled to the actuation group and stores energy during normal operation and supplies the energy during a failure. A second backup energy source is selectively coupled to the first backup energy source and supplies energy thereto during the failure. A latch controller is coupled to the backup energy sources and detects latch operation and whether there is normal operation. The latch controller charges the first backup energy source using energy from the second backup energy source based on the detection of latch operation and the failure and disconnects the second backup energy source during normal operation to conserve energy stored in the second backup energy source.

Abstract: An output circuit includes a comparator circuit, a voltage conversion circuit and a signal output circuit. The comparator circuit detects an operating mode based on a first supply voltage and a second supply voltage and generates a first control signal. The voltage conversion circuit adjusts a level of an output voltage from a low-dropout regulator according to the first control signal to generate a first voltage, and generates a second voltage according to the first control signal and the first voltage. The signal output circuit adjusts a level of a digital signal according to the first voltage, the second voltage and the first supply voltage to generate a digital output signal corresponding to the operating mode.

Abstract: In various embodiments, a process for performing metering component testing includes obtaining a configuration associated with at least one metering component installed at a site to be metered and performing a metering component test. The metering component test includes at least one of: detecting phase assignment of the at least one metering component based at least on the configuration, and detecting polarity of the at least one metering component based at least on the configuration. The process includes outputting information associated with the metering component test.

Abstract: An integrated power control system for transferring electric power from a photovoltaic source through a power module to a transfer switch and/or a storage battery. A monitoring system includes external current sensors that control connection of the transfer switch to a utility distribution network. Electrical energy that is generated by the photovoltaic source is directed to a load and a lithium-ion storage battery according to the level of photovoltaic power generated and according to the load demand. At times when the photovoltaic energy is greater than the load demand and the charge level of the battery is at full capacity, excess energy is directed to the electrical distribution grid. In case of grid outage, energy is drawn from the battery to maintain electric supply for designated loads.

Abstract: A system includes: a ring bus; a plurality of static uninterruptible power supplies (UPSs), each static UPS of the plurality of static UPSs including: at least one battery; an input that is electrically connected to a first external electrical power source; and an output that is electrically connected to a load, and, via a first corresponding choke, to the ring bus; at least one fuel-cell interface converter (FIC) that converts direct current (DC) electrical power to alternating current (AC) electrical power, each FIC of the at least one FIC being electrically connected to the ring bus via a second corresponding choke; and a fuel cell module corresponding to and electrically connected to each FIC, the fuel cell module including a fuel cell.

Abstract: The present disclosure includes an automotive battery system that uses switching devices to increase operational performance and reliability. The battery system includes a battery cell, a primary switching device electrically coupled to a terminal of the battery cell, and a secondary switching device electrically coupled to the terminal of the battery cell and in parallel with the primary switching device. The primary switching device includes an electromechanical switching device that enables charging or discharging of the battery and generates a boosted voltage. A secondary switching device includes a solid-state switching device and a diode, electrically coupled in series, which detect short circuit conditions in a power-efficient manner and remove the short circuit condition by using the boosted voltage to actuate the armature.

Abstract: Disclosed are an offline uninterruptible power source and a control method therefor.

Abstract: Systems and apparatuses for access-controlled electrical docking stations that automatically switch power to an electrical system between generator power and utility power are disclosed herein. An illustrative electrical docking station can include a cabinet that houses a circuit breaker, a generator interface to connect generators to the electrical docking station, an Automatic Transfer Switch, and a power supply. The power supply can supply converted DC power and protection to different accessories for the electrical docking station including an alarm, a supervisory control and data acquisition (SCADA), and a locking mechanism. The locking mechanism can be configured to lock a door to the generator connectors in a closed position when the ATS is energized by a generator and to not lock the door when the door is in an open position. In some such circumstances, the alarm can shine green or provide an audible alarm and shine red respectively.

Abstract: A system and a method for condition monitoring during the operation of a conveyor system, in particular an airport baggage conveyor system, includes conveyor units and a background system. A conveyor unit includes an individual conveyor line and/or a group of conveyor lines. It is possible to record an individual current characteristic of an individual conveyor unit. Each individual conveyor unit has a defined current characteristic during fault-free operation and the background system is configured to record the defined current characteristic and the actual current characteristic of the conveyor unit. The background system is configured to analyze the actual current characteristic of the conveyor unit and to signal, on the basis of the analysis, an impending wear and/or a malfunction of the conveyor system, in particular of a conveyor line of the conveyor unit.

Abstract: Elevator systems, methods, and devices comprising dual source light systems are described herein. Such elevator systems may be associated with or located within wind turbines and wind turbine towers. In embodiments, an elevator cabin may comprise a dual source light system further comprising at least one light source, a supercapacitor unit, an electronic circuit electrically connected to the at least one light source and the supercapacitor, and a housing unit. The dual source light system can receive energy from an external power source, convert one or more characteristics of the energy, e.g., voltage or current, and distribute the energy to the at least one light source. Any excess energy can be used to charge the supercapacitor such that when energy from the external power source is insufficient to power the at least one light source, such as during an outage, the electronic circuit draws energy from the charged supercapacitor.

Abstract: An uninterruptible power apparatus is coupled between a power grid and a load. The uninterruptible power apparatus includes a bypass path, a power conversion module, and a control module. The bypass path is coupled to the power grid through a grid terminal, and coupled to the load through a load terminal. The control module turns off a first thyristor and a second thyristor by injecting a second voltage into the load terminal during a forced commutation period. The control module calculates a magnetic flux offset amount based on an error amount between the second voltage and a voltage command, and provides a compensation command in response to the magnetic flux offset amount. The control module controls the DC/AC conversion circuit to provide a third voltage to the load terminal based on the compensation command and the voltage command.

Abstract: An apparatus for uninterruptible power supply (UPS) comprises a rotating electric machine having a generator winding and a plurality of motor windings. The motor windings of the plurality of motor windings are electrically insulated from the generator winding and from one another. The UPS further comprises, for each motor winding, an energy storage for electric energy and an inverter which outputs an alternating current and via which the energy storage is connected to the respective motor winding.

Abstract: A system is provided for suppressing transient currents in electrical circuits to prevent damage to switching devices such as relays and/or solid-state switching devices. An associated automatic transfer switch (ATS) system (300) includes a primary power cord terminating in cord cap (302) for receiving power from a primary power source and a secondary power cord terminating in cord cap (304) for receiving power from a secondary power source. The system (300) further includes an output (306) for connecting to an output load such as a piece of electronic equipment. The output (306) may be a female outlet such that the system (300) can be directly connected to a male power port of a piece of equipment. The system (300) further includes a micro-ATS module (308) operative to sense a power outage or degradation of signal quality for the power signal of at least the primary power source and, in response, to switch the power supply from the primary source to the secondary power source.

Abstract: Systems and methods are described herein to accommodate different settings associated with an inverter-based electric power generator and an inverter-based electric power generator for electric power generation within an electric power delivery system. The electric power delivery system may provide electric power generated by a bulk electric system to the loads via distributed substations using a first operating frequency. Moreover, the distributed substations may include inverter-based electric power generators to supply the electric power demand of downstream loads in an islanded configuration. That said, the inverter-based electric power generators may supply the electric power using a second frequency that is higher than the first frequency. Protective systems, positioned downstream from the distributed substations, may use different settings associated with the bulk electric system or the inverter-based electric power generators based on detecting the frequency of the supplied electric power.

Abstract: A system for using one of two independent alternating power sources to power a load is provided. The system sets a flux match to a first value, wherein the flux match indicates a set range for switching between powering the load using a first power source and powering the load using a second power source. The system switches between powering the load using the first power source and powering the load using the second power source using the first flux match value. The system further obtains a first set of inrush current values associated with the switching. Based on the first set of inrush current values and a maximum inrush current threshold, the system adjusts the flux match to a second value and switches between powering the load using the first power source and powering the load using the second power source using the second flux match value.

Abstract: An isolated bus inverter system including inverter circuits and a controller. The inverter circuits include a switching array to provide a polyphase alternating current (AC) signal to an output. Each of the inverter circuits includes an energy source isolated from the other inverter circuits of the inverter circuits or a reference isolated from the other inverter circuits of the inverter circuits. The controller is configured to generate timing signals for the inverter circuits to generate the AC signals for the output based on DC signals received from one or more rectifier circuits.

Abstract: A method for transmitting information includes transmitting a broadcast message in a manner of out-of-band communication by a first power transmitting device. The broadcast message is configured to indicate related information of a first power transmitting device to a power receiving device and/or other power transmitting devices.

Abstract: An inductive-load control circuit includes a circuit board on or in which a controller and a driving circuit are disposed, an inductive load disposed at a location apart from the circuit board and connected to the driving circuit of the circuit board, a detection resistor group included in the driving circuit and connected in series with the inductive load, and a temperature measuring element. The detection resistor group includes resistors. The temperature measuring element is disposed between the resistors. The controller and the driving circuit are supplied with electric power by a power supply. The driving circuit controls the electric power supplied by the power supply and applies the electric power to the inductive load. The circuit board has a signal ground connected to the controller and a power ground connected to the detection resistor group of the driving circuit. The temperature measuring element is connected to the power ground.

Abstract: Implementations are described for a modular power distribution unit (PDU) for a rack-mountable power tray or power shelf. The modular PDU includes a housing defining an input face and an opposing output face, and a plurality of power cables extending to the input face. The modular PDU further includes one or more second power connectors arranged at the output face, and distribution circuitry configured to distribute power from a first power bus and a second power bus to the one or more second power connectors. The modular PDU further includes one or more fasteners configured to attach the output face of the housing to the face of the power tray or power shelf, wherein the one or more second power connectors are retained in a coupled configuration with the one or more first power connectors.

Abstract: One embodiment provides an electrical circuit coupled to an alternator. The electrical circuit includes a rotor and stator coils. The electrical circuit is configured to receive, at a point when an engine is operating, an electrical current that is induced in the stator coils by rotation of the rotor and charge a battery pack with the electrical current and inhibit generation of a spark by the engine while the alternator is powered by the battery pack until a speed of the alternator is greater than a threshold. The electrical circuit is further configured to power the alternator, at a point when the engine is not operating, with electrical current supplied by the battery pack coupled to a battery connector to start the engine.

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 power system is disclosed. The power system includes a first power generating unit. The first power generating unit includes a first power converting subunit and a first control unit coupled to the first power converting subunit, where the first control unit is configured to regulate a voltage of the first power generating unit. The power system further includes a second power generating unit coupled to the first power generating unit and a load, where the second power generating unit includes a second power converting subunit and a second control unit coupled to the second power converting subunit, wherein the second control unit is configured to control a current of the second power generating unit to share a quantity of electrical output current flowing through the load among the first and second power generating units.

Abstract: An image forming apparatus has an AC circuit having a heater and a triac for load control connected in series with the heater in order to control the heater. In addition, an image forming apparatus includes an overcurrent operation circuit connected in parallel with the AC circuit and through which a current flows in a state where DC power is suppliable to the AC circuit, and a polyswitch connected in series with the AC circuit and the overcurrent operation circuit, in which the polyswitch shuts off the current when an overcurrent flows in the overcurrent operation circuit.

Abstract: A power system includes a base, two magnetic bearings mounted on the base, a shaft rotatably mounted on the two magnetic bearings, a flywheel mounted on the shaft, a motor connected with the flywheel, an uninterrupted power supply electrically connected with the motor, a utility power electrically connected with the uninterrupted power supply, a coupling connected with the shaft, a speed change device connected with the coupling, a generating device connected with the speed change device, a load electrically connected with the generating device, a recharge rectifier electrically connected with the uninterrupted power supply, and a reactor electrically connected with the recharge rectifier and the generating device. Thus, the enlarged torque of the flywheel provides the inertia power to enhance the generating power of the generating device.

Abstract: A power system and method for powering an imaging system. The power system and method include a power distribution unit (PDU) coupled to an imaging system gantry. An input of the PDU is electrically coupled to an alternating current (AC) power source from a utility power supply. An output of the PDU is electrically coupled to the imaging system gantry. The power system and method further include an energy storage system providing peak power to an X-ray generator of the imaging system during X-ray generation.

Abstract: A method of operating a charging station for a marine battery on a marine vessel is provided, wherein the charging station includes a charger configured to deliver a DC charge current from an AC power source and wherein the charger is at least partially encapsulated in an enclosure located on a dock structure in or adjacent to a body of water. Upon the marine battery being operatively coupled to the charging station, charging the marine battery with the charger using the power source. At least one pump is controlled to draw in cooling water from the body of water and to circulate the cooling water through the enclosure to cool the charger.

Abstract: A photovoltaic air conditioner control method and apparatus and a photovoltaic air conditioner. The method includes: detecting in real time the grid-connected side inverter module temperature and the grid-connected side current of a photovoltaic air conditioner; determining the interval in which the grid-connected inverter module temperature is located and the interval in which the grid-connected side current is located; and, on the basis of the determining results, performing frequency-limiting and frequency-reduction control of the photovoltaic air conditioner.

Abstract: A control system includes: a semiconductor chip, having built therein a processing part, an A/D converter and a pull device circuit; a wiring part, having one end connected to a terminal connected to the A/D converter; and a sensor, connected to the other end of the wiring part and inputting a sensor signal in analog form via the wiring part. The pull device circuit includes a switching element, and has one end connected to ground or a power supply voltage and the other end connected between the A/D converter and the terminal. The processing part includes: a switch control part, controlling the switching element to be in an on or off state; a sensor information generator, generating sensor information based on the sensor signal; and a disconnection detector, detecting disconnection of the wiring part based on output of the A/D converter when the switching element is in the on state.

Abstract: An arrangement is for compensating voltage drops in a power supply network. The arrangement includes at least one first converter system and a second converter system. The intermediate circuits thereof are coupled, and the first converter system is connected to a first distribution and the second converter system is connected to a second distribution.

Abstract: Electrical systems for providing uninterruptible power to a critical load. One electrical system includes a ring bus, multiple power blocks including one or more generators electrically coupled to the ring bus, and uninterruptible power supplies (UPSs) electrically coupled to the ring bus. In some aspects, the electrical system includes a UPS switchgear electrically coupled between the ring bus and the UPSs. In other aspects, the UPSs are electrically coupled together in parallel. Another electrical system includes a utility switchgear, UPS blocks electrically coupled together in parallel and electrically coupled to the utility switchgear via transformers, low voltage (LV) power blocks electrically coupled to the UPS blocks, and medium voltage (MV) switchgear electrically coupled to the UPS blocks via transformers. Each of the LV power blocks include one or more generators.

Abstract: A timer circuit for an X-ray imaging system having an X-ray generator used to generate images of a patient. The circuit includes a current sensor connected between a main power system and a circuit interrupter, wherein the circuit interrupter is also connected to the X-ray generator. The circuit also includes a timing device coupled between the current sensor and a control computer. The timing device is triggered when a current level detected by the current sensor exceeds an idle current level wherein X-rays are not generated by the X-ray generator. The timing device then measures a time period that the idle current level is exceeded. When the measured time period exceeds a predetermined time period by 10%, the circuit interrupter is activated to turn off current flow to the X-ray generator.

Abstract: A UPS system includes a plurality of UPSs coupled in parallel and each having a bypass switch and a controller that is in communication with the controller of the other UPSs and including: a first unit monitoring the current flowing through a bypass line of its UPS and determining the effective value of the current strength; a second unit collecting the effective values of all of the UPSs having the bypass switch closed and defining a reference effective value corresponding to the lowest collected effective value; a third unit determining a delay for closing the bypass switch of said UPS, the delay being zero if the effective value of its UPS is equal to the reference effective value; and a fourth unit keeping the bypass switch closed if the delay is zero, or opening it for a duration corresponding to the delay before closing it.

Abstract: An isolation transformer boost system. The system includes a power supply and an isolation transformer. The isolation transformer includes a primary winding electrically connected to the power supply, a secondary winding, a first voltage tap, and a second voltage tap. Wherein the isolation transformer is configured to, in response to a command from an electronic processor, disconnect a connection from the second voltage tap and establish a second connection from the first voltage tap, wherein the command is based on an electrical characteristic measurement of the power supply exceeding an upper limit threshold for a predetermined period of time.

Abstract: Disclosed is a power control system for a container vessel. The power control system has a power interface for supplying energy to at least one reefer container transportable by the container vessel. The power control system also has a controller configured to obtain load data representative of a load on a generator of the container vessel, and target load range data representative of a target load range for the generator. The power control system is configured to control the load such that the load falls within the target load range by the controller increasing energy supplied to the power interface for storage at the at least one reefer container, when the load is below the target load range.

Abstract: The disclosure discloses a scheduling method for collaborative work of multi-device in a parallel switching system, the method comprises: providing a load and N backup energy storage devices, n is a positive integer greater than or equal to 2; and connecting the AC output interfaces of the N backup energy storage devices to the load or assembling the AC charging interfaces of the N backup energy storage devices to form a parallel switching system and obtaining numbers 1 to N according to the sequence of the communication modules accessing Wi-Fi hotspots. When the backup energy storage device with any number is switched to the load in the power supply mode, the other backup energy storage devices are switched to the wire mode to transfer current.

Abstract: A method includes providing, when delivery of power to a memory sub-system comprising a plurality of non-volatile memory components from a main power supply is interrupted, power from an auxiliary power supply to a portion of a controller interfacing with the non-volatile memory components. The portion of the controller may utilize the power from the auxiliary power to supply to: responsive to a prediction, generated when the delivery of the power from the main power supply to the memory sub-system is interrupted, that a particular portion of the plurality of non-volatile memory components will experience an impending data loss event, perform a targeted refresh operation of data stored in the particular portion.

Abstract: A power transfer switch suitable as a bypass switch connecting a utility feed to a load comprises a bi-stable actuator selectively driven by a compression means charged by a handle. A latch retains the actuator until suitable power source conditions are detected to allow the transfer to proceed. The controller releases the latch and the actuator abuts breakers in sequence to effect a reliable make-before-break or break-before-make transfer.

Abstract: A powered building system that includes an electric power distribution system configured to distribute electrical power to a plurality of receptacles; one or more load sources; and one or more battery systems associated with: a respective receptacle of the plurality of receptacles and a respective load source of the one or more load sources.

Abstract: The invention provides a power converter apparatus for converting an alternating current (AC) power input to a direct current (DC) power output. The apparatus comprises a plurality of n single-phase power converting circuits arranged in parallel, where n is equal to or greater than 2, wherein one of said n single-phase power converting circuits comprises a single-stage AC/DC converter module having an operating AC/DC converter; and each of a remaining n?1 of said single-phase power converting circuits comprises a two-stage converter module having an AC/DC converter as an input stage and a DC/DC transformer as an output stage.

Abstract: A power supply apparatus, including: a transformer including a first primary winding for connection to a first power source and a second primary winding for connection to a second power source, and a secondary winding for delivering power therefrom as the output of the power supply apparatus; a controller for receiving voltage inputs from the first power source and the second power source, and in response to the received voltage inputs control supply from the first power source to the first primary winding and from the second power source to the second primary winding, such that: if the first power source and second power source are available the controller operates to allow power to be supplied to the first primary winding from the first power source and operates to shut off supply of power to the second primary winding from the second power source.

Abstract: A dual-input power conversion system includes a first primary side power network coupled between a first ac power source and a first primary winding of a transformer, a second primary side power network coupled between a second ac power source and a second primary winding the transformer, a secondary side power network coupled to a secondary side of the transformer, and a power converter coupled between the secondary side power network and a load.

Abstract: A design for the electrical infrastructure of a data center enables two different configurations to be utilized, including a distributed, redundant configuration that provides higher reliability and a non-redundant configuration that provides higher capacity. In the distributed, redundant configuration, each server in the data center draws power from at least two different power supply systems. This enables load shifting when a power supply system becomes unavailable, which can have the effect of increasing server reliability. In the non-redundant configuration, each server in the data center draws power from only one power supply system. Load shifting is not utilized in the non-redundant configuration, which eliminates the need to maintain reserve capacity and thereby increases capacity. Advantageously, it is possible to switch between these two configurations without making any internal changes to the data center other than modifying connections between sets of server racks and power buses.

Abstract: An intelligent stable power supply system includes a first power input module, a first non-return valve module, an active pulse wave generation unit, a DC power processing unit, and a control unit. When the control unit determines that a first voltage value is less than a first predetermined value or greater than a second predetermined value, and a second voltage value is between the first predetermined value and the second predetermined value, the control unit firstly controls the first non-return valve module being from an on state to an off state, and then controls the second non-return valve module being from an off state to an on state so that a power signal of the second power input module flows into the active pulse wave generation unit and the DC power processing unit to output a DC power signal.

Abstract: An apparatus converts an AC power panel into a persistent DC power panel with a persistent power switch. The persistent power switch includes a removable power unit for coupling to the AC power switch in order to convert the AC power panel into a persistent DC power panel. The removable power unit can be mounted in the power panel or can be implemented as a stand-alone external device for connecting to the power panel.

Abstract: The disclosure provides a photovoltaic electric appliance system and a voltage protection value control method and apparatus thereof, and a controller. The photovoltaic electric appliance system includes: a photovoltaic power generation module, an electric appliance, and a grid-connection module. Said control method comprises-: acquiring the working states of the photovoltaic power generation module, the electric appliance and the grid-connection module; and according to the working states of each, determining an operation mode of the photovoltaic electric appliance system, and setting a voltage protection range of the photovoltaic electric appliance system according to the operation mode.

Abstract: Power systems and methods are provided that receive input power and provide output power to a load. Under a first state of operation, power conversion circuitry may receive the input power and provide the output power. A bypass switch includes a controller that detects a failure condition by detecting a link down state on a communications interface. In response to detecting the link down state, the switch controller operates the bypass switch to convey the input power to the output in a second state of operation. The second state of operation is a bypass state of operation whereby the power conversion circuitry is bypassed.

Abstract: A multi-port split-phase power system that includes a control panel including a plurality of breakers, a multi-port converter including an AC port coupled to a second breaker, a DC port coupled to a DC energy source device, and galvanically isolated converters coupled to the AC port and DC port, where the AC port includes a first line, a second line, and a neutral and structured to supply, from the AC energy source device during islanded mode, at least one of 240V to the load device via the first line and the second line or 120V to the load device via the first line and the neutral, and an energy management system including a software for controlling the plurality of breakers, the energy management system structured to perform islanding, reconnection to the utility, and interlocking of the plurality of breakers during the islanding.

Abstract: The present disclosure provides a method for controlling an energy control system. The energy control system includes a grid interconnection, a backup load interconnection, a non-backup load interconnection, and a backup power interconnection. The method includes receiving electronic data from a plurality of backup loads. The method includes detecting a power outage at the grid interconnection electrically coupled to a utility grid. The method includes disconnecting the grid interconnection from the backup power interconnection, in which the backup power interconnection is electrically coupled to a backup power source. The method includes connecting a first set of the plurality of backup loads to the backup load interconnection, in which the backup load interconnection is electrically coupled to the backup power interconnection such that power is supplied from the backup power source to the first set of backup loads.

Abstract: A energy storage system includes a power supply device, a main battery and a backup battery, and a power supply method of the energy storage system includes: when the power supply device works normally, a load is powered and the backup battery is floatingly charged by the power supply device, and the main battery is in standby mode; when the power supply device stops supplying power, the load will be powered by the backup battery, and meanwhile, the main battery will be triggered to switch from the standby mode to a backup mode to start supplying power to the load; when an output power of the main battery is equal to a power of the load, an output power of the backup battery is zero and the backup battery is in a bypass state.