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: 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: 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.

Abstract: The power conversion system includes a power conversion circuit, a power conversion control circuit including a charging control mode, and a command value generating part. The charging control mode is a mode in which the output voltage of the power conversion circuit is controlled so that an interconnection inductance receives an interconnection inductance voltage determined by the power supply voltage vector of the AC power supply and the voltage command value vector having a delay phase with respect to the power supply voltage vector and having a magnitude and a phase based on the command value. The command value generating part generates a second command value for operation of the charging control mode when the voltage of the storage battery falls below the over-discharge threshold.

Abstract: In a detection condition determining method, a control center obtains a working parameter value of a target photovoltaic device in a first time length closest to a current time point, where the working parameter value of the target photovoltaic device may be provided for the control center by a photovoltaic inverter coupled to the target photovoltaic device. The control center detects the target photovoltaic device in response to the control center determining, based on the working parameter value, that an environmental parameter value of the target photovoltaic device meets an environmental parameter threshold. Using the method helps reduce operation and maintenance costs of a photovoltaic power station.

Abstract: The present disclosure relates to a technical idea for efficiently using space of a power supply unit of a charging/discharging system by facilitating arrangement and design in a unit module. A modular high-precision charger/discharger sub-rack assembly structure includes: a base plate fixed in a state of being vertically erected to a sub-rack of a high precision charger/discharger; and at least one charger/discharger power supply unit or electrically or physically detachably attached to one surface of the base plate, configured to perform charging or discharging through bi-directional AC-DC conversion or bi-directional DC-DC conversion between a battery and a power source, including constituent circuits arranged in a first direction to have an elongated shape in the first direction and to perform charging or discharging, and arranged in parallel in a second direction perpendicular to the first direction on the base plate.

Abstract: Aspects of the disclosure include a power device having a first input configured to be coupled to a main power source, a second input configured to be coupled to a back-up power source, an output configured to be coupled to a load, the load being configured to perform a procedure, and at least one controller configured to determine a required energy for the load to perform the procedure, estimate an amount of available energy predicted to be available to the power device during the procedure, the available energy being derived from at least the back-up power source, determine whether the amount of available energy predicted to be available is equal to or greater than the required energy, and prevent power from being provided at the output responsive to determining that the amount of available energy predicted to be available is less than the required energy.

Abstract: A variable frequency drive system (300) includes a power converter (310) with a plurality of power cells supplying power to one or more output phases (A, B, C), a main power source (320) for providing main input power to the power converter (310), an auxiliary power source (330) for providing auxiliary input power to the power converter (310), and a control system (314) in communication with the power converter (310) and controlling operation of the plurality of power cells, wherein the control system (314) comprises one or more processor(s) (315) configured via computer executable instructions to detect a main input voltage drop of the main power source (320) below a predefined power threshold, disconnect the main power source (320) in response to the main input voltage drop, and enable the auxiliary power source (330) to provide auxiliary input power to the power converter (310) in response to the main input voltage drop.

Abstract: An IoT wireless power transfer sensor is provided, which includes a sensor circuit, a group of retrodirective searching antennas, a group of energy harvesting antennas and a communication antenna. The sensor circuit includes a switching unit, an energy converting unit, a power management unit and an energy converting and storage unit. The searching antennas are connected to the switching unit. When the switching unit is on, the searching antennas don't harvest the energy of an external device's scanning signal; they reflect the incident energy to the external device. The energy harvesting antenna is connected to the energy converting unit and receives the incident energy to charge the energy converting and storage unit. When the power storage level of the energy converting and storage unit reaches a first threshold value, the switching unit is consecutively switched between on and off to transmit a device information in back-scattered way to the external device.

Abstract: This application discloses power distribution equipment and a power distribution system. The power distribution equipment includes a power distribution device and a power distribution box, where the power distribution device is capable of being inserted into and removed from the power distribution box; a connection port is disposed at a first end of the power distribution device, where the connection port is used to connect a power cable or a user load line; a power connection terminal is disposed at a second end of the power distribution device, where the power connection terminal is used to plug into a busbar inside the power distribution box; and the connection port and the power connection terminal are connected inside the power distribution device. A design in which the power distribution device is capable of being inserted into and removed from the power distribution box simplifies operation and improves convenience.

Abstract: A powertrain for powering wellsite pumping operations includes a power source for producing energy, a power bank, electric motors coupled to pumps, and a power management system. The power source can be a prime mover coupled to a generator, the prime mover sized for supply up to the average power demand of the pumping operation, and the power bank is sized to supply up to at least the difference between the peak and average power demand of the pumping operation, thereby providing a load levelling means to satisfy peak demand of the operation. The power management system manages the direction of current flow, state of charge of the power bank, and power source operation to provide least fuel consumption while meeting the power demand of the pumping operation.

Abstract: Described is an architecture for a physical layer device useable with single pair Ethernet in a multidrop bus topology that may operate in a sleep mode and control other devices in network segment to operate in a sleep mode. Some embodiments of the physical layer device may support partial networking in a multidrop network, and mixed networks including the same.

Abstract: A turbine speed probe diagnostic system is provided. The turbine includes a speed probe and a speed reading circuit. A speed lead connects the speed probe and speed reading circuit together to transmit speed signals from the speed probe to the speed reading circuit. A speed probe diagnostic circuit is also provided for connection to the speed lead. An isolation switch is provided to isolate the speed probe diagnostic circuit during normal operation when the speed reading circuit is receiving speed signals from the speed probe. When no speed signals are being received, the isolation switch closes and the speed probe diagnostic circuit performs a test on the speed probe or speed lead.

Abstract: A redundant power transfer apparatus provides an uninterrupted power transfer for a rear-stage circuit. The redundant power transfer apparatus includes a main loop switch coupled to a main power source, a standby loop switch coupled to a standby power source, and a control unit. The control unit controls the redundant power transfer apparatus to make the main power source or the standby power source supply power to the rear-stage circuit.

Abstract: An Ethernet power supply device is provided. The Ethernet power supply device includes a first switch, a second switch, and a processor. When the first switch detects that there is no adapter power supply, the first switch generates a first power supply according to a first network power from a first Ethernet network connector port. When the second switch detects that there is no adapter power supply, the second switch generates a second power supply according to a second network power from the second Ethernet network connector port. When there is no adapter power supply and the first power supply and the second power supply are at the same power level, the processor provides a first control signal to control the first switch to provide the first power supply to a power output terminal as an output power supply.

Abstract: A smart circuit breaker includes a communication interface, separable contacts, a processing unit having a memory with a routine stored therein which, when executed by the processing unit causes the processing unit to: sense a power outage in an electrical grid, control a meter to open contacts to disconnect from the electrical grid, sense power restoration to the electrical grid, control contacts corresponding to a secondary power source to open, control the meter to close contacts to reconnect to the electrical grid, sense that a frequency of power from the electrical grid matches a frequency of power from the secondary power source, and control the contacts corresponding to the secondary power source to close.

Abstract: An apparatus for a load tap changer includes a first primary winding electrically connected to a first contact, the first contact configured to connect to one of a plurality of taps in a load tap changer; a second contact, the second contact configured to connect to one of the plurality of taps in the load tap changer; a magnetic core; and a control circuit including: a secondary winding configured to magnetically couple to the first primary winding and the magnetic core; and an electrical network electrically connected to the secondary winding, the electrical network being configured to prevent magnetic saturation of the magnetic core during switching of the first or second contact.

Abstract: An electric power supply comprises first and second input circuits for receiving first and second input DC voltages and a control circuit coupled to the first and second input circuits. The control circuit is configured to sense the first input DC voltage and the second input DC voltage and to enable the first input circuit and disable the second input circuit in response to the first input circuit having the highest input DC voltage to substantially prevent current from back feeding to the first input circuit from the second input circuit. The control circuit is also configured to enable the second input circuit and disable the first input circuit in response to the second input circuit having the highest input DC voltage to substantially prevent current from back feeding to the second input circuit from the first input circuit.

Abstract: An apparatus provides a single split-bus electrical panel with back-feed circuit breakers arranged to allow connection of a Microgrid Interconnection Device (MID) for isolation of a critical loads section from a standards loads section during back-up operation due to a utility power outage. A first panel section of the split-bus electrical panel supplies power to non-critical standards loads in a residence. A second panel section of the split-bus electrical panel supplies power to critical loads in the residence, which must continue to be powered during a utility power outage.

Abstract: A method for suppressing magnetizing inrush current of the transformer with flux linkage control includes connecting a small-capacity direct current/alternating current (DC/AC) converter with the secondary winding or auxiliary winding of transformer, detecting the primary side phase voltage before closing load, inducing the core flux linkage reference according to the relationship between the winding voltage and core flux linkage. The core flux linkage closed-loop PI control system is constructed to control the converter voltage in the synchronous coordinate, then the core flux linkage can track its reference with no static error, thus the sinusoidal flux linkage with 90-degree difference from the grid voltage can be pre-established in the core before no-load closing. By these methods, no matter when the main transformer closes, the core flux linkage is always in the steady state, and the magnetizing inrush current can be eliminated completely.

Abstract: A redundant power source ECU detects for failure of a power source of a primary system from a first DC-to-DC converter. In cases in which a failure has been detected during autonomous driving, the redundant power source ECU performs control to cause operation by a sub battery of a predetermined secondary system component that draws an inrush current, regardless of whether or not operation has been requested.

Abstract: An on-board electrical system for a vehicle includes an on-board power supply system (12) with a plurality of electrical energy consumers, and at least one on-board power supply system battery (14). At least one short circuit breaking device (28) disconnects a short circuit-relevant system area (22) from the on-board power supply system (12) when a short circuit occurs in the area of the short circuit-relevant system area (22).

Abstract: This system is directed to a mobile platform having a power array carried by the mobile platform, connected to a distribution hub adapted to provide power to a base power source; an input controller having input computer readable instructions adapted to deliver power to a set of storage units from the base power source, the set of storage power units carried by the mobile platform; an output controller connected to the set of storage units having output computer readable instructions adapted to receive charge requirements from a load connected to the output controller, retrieving from a device lookup table included in the output controller a load type having charge specifications and delivering power to the load according to the charge specifications; and, an external power source connected to the distribution bus for proving power to the base power source from the external power source.

Abstract: A system including a power bus configured to supply power to a plurality of server racks arranged within a space of a building, a first power source connection positioned at a first side of the building and configured to supply power from a first power source to the power bus, a second power source positioned at a second side of the building different from the first side and configured to supply power from a second power source to the power bus, and a plurality of diverter switches arranged within the power bus. Each diverter switch may be configured to receive a respective control signal and, responsive to the respective control signal, redirect power within the power bus.

Abstract: In an embodiment, a method includes: receiving a main supply voltage; generating a first regulated output voltage with a DC-DC converter; providing the main supply voltage to a driver of a control terminal of an output transistor of an LDO; receiving, at an input terminal of the LDO, the first regulated output voltage; generating, at an output terminal of the LDO, a second regulated output voltage from the first regulated output voltage; and when the main supply voltage falls below a predetermined threshold, discharging a capacitor coupled to the input terminal of the LDO by activating a switch coupled to the input terminal of the LDO.

Abstract: An Uninterruptible Power Supply (UPS) including an input configured to receive input AC power, a backup power input configured to receive backup DC power having a first voltage level from a backup power source, a converter configured to convert the input AC power from the input and the backup DC power from the backup power input into DC power having a second voltage level, the converter including an input selection circuit configured to selectively couple the converter to the input and the backup power input, an inductor, a first converter switch configured to couple a first end of the inductor to a neutral connection, and a second converter switch configured to couple a second end of the inductor to the backup power input via the input selection circuit.

Abstract: A vehicle includes a battery, an inverter, a permanent magnet electric machine, and a controller. The controller commands discharge of a storage element of the inverter through the permanent magnet electric machine via a current having a zero quadrature axis component and a positive direct axis component.

Abstract: A power calculation apparatus calculating an amount of power suppliable to a power system by an energy source connectable, at a connection point, to the power system and capable of power generation and power storing, the power calculation apparatus includes: a microprocessor and a memory connected to the microprocessor, wherein the microprocessor is configured to perform: specifying a position of the connection point of the energy source in connection with the power system; acquiring a capacity information indicating a power generation capacity or a remaining storage capacity of the energy source; and calculating an amount of power suppliable by the energy source to the power system in an area within a predetermined range including the connection point, based on the capacity information and the position of the connection point.

Abstract: A method for controlling a vehicle active chassis power system includes determining, via a processor, a minimum output voltage/current threshold for an aggregated power supply associated with an active chassis operation, and generating an aggregate State of Function (SoF) indicative of a maximum voltage/current budget for an output of the vehicle active chassis power system. The aggregate SoF is based on a primary power source voltage/current output and a power storage voltage/current output. The method further includes causing to control an active chassis power system actuator based on a minimum voltage/current value associated with the aggregate SoF. Causing to control the active chassis power system actuator can include publishing the aggregate SoF to a braking actuator, a steering actuator, or to a domain controller that actively distributes an aggregated power supply capability SoF to a braking actuator and a steering actuator based on one or more present vehicle states.

Abstract: A power regulation apparatus includes a first switch and a switch control signal generation unit including a first transconductance unit including a first input terminal for receiving a first voltage from a first terminal of the first switch, a second input terminal for receiving a second voltage from a second terminal of the first switch, and an output terminal for being connected to a first node, a node voltage generation unit connected to the first node and configured to generate a node voltage signal at the first node, and a second transconductance unit including a first input terminal for receiving a current characterization signal characterizing a current flowing through the first switch, a second input terminal for being connected to the first node so as to receive the node voltage signal, and an output terminal for being connected to a control terminal of the first switch.

Abstract: The invention relates to a system for combining multiple power sources into a single in-phase AC current and related methods. According to an illustrative embodiment of the present disclosure, multiple out of phase AC power sources are provided, individually converted into DC currents, and combined in parallel to create a single DC current. The single DC current is then converted to an AC current, leaving a single in-phase AC current.

Abstract: An in-vehicle backup the control apparatus includes a switch unit (for example, including second switch units), a control unit, a low-voltage detection circuit, and a latching circuit. The switch unit is provided between a power storage unit and a load (for example, a second load). The control unit controls the switch unit. The low-voltage detection circuit detects a low-voltage state of an electric power path through which electric power from a power supply unit is supplied. When the low-voltage detection circuit detects the low-voltage state, the latching circuit is switched to a latched state in which the switch unit is kept in an on state. When the electric power path is in the low-voltage state, the control unit releases the latched state and controls the switch unit to be in an on state.

Abstract: An uninterruptible power supply (UPS) is operated to selectively provide energy to a critical load from a grid and an energy storage device and to transfer energy between the energy storage device and the grid. A controller causes the UPS to selectively support bidirectional and unidirectional transfers of energy between the grid and the energy storage device based on a state of charge (SOC) of the energy storage device.

Abstract: A fuel system for a vehicle having an engine is provided. The fuel system including: a fuel tank for holding a hydrogen fuel in a liquid phase; a fuel delivery assembly extending from the fuel tank to the engine for providing the hydrogen fuel from the fuel tank to the engine; a vaporizer in communication with the fuel delivery assembly for heating the hydrogen fuel in the liquid phase to a gaseous phase, to a supercritical phase, or both; and a high pressure pump in fluid communication with the fuel delivery assembly at a location downstream of the vaporizer for inducing a flow of the hydrogen fuel through the fuel delivery assembly to the engine.

Abstract: A method performed by a controller device is provided. The method includes (a) connecting to a plurality of remote robotic vehicles over a wireless connection; (b) selectively controlling one of the plurality of remote robotic vehicles over the wireless connection; and (c) displaying, on a video screen of the controller device, a video stream received from the one remote robotic vehicle over the wireless connection. A corresponding method is provided to be performed by a robotic vehicle. Apparatuses, computer program products, and a system for performing the method(s) are also provided.

Abstract: Embodiments of the present disclosure provide an electrical apparatus, a power supply system having the same and a method of manufacturing the electrical apparatus. The electrical apparatus includes a detecting circuit coupled to a generator and configured to detect a frequency of the generator. The electrical apparatus also includes a controller coupled to the detecting circuit and configured to receive a first signal indicating the detected frequency and adjust the frequency of the generator in response to determining that the detected frequency is out of a predetermined frequency range. In this way, an actively controlling of the changing rate of the power to and from generator may be achieved, if the generator frequency exceeds the configured limits.

Abstract: An automatic transfer switch (100) for automatically switching an electrical load between two power sources is provided. Two power cords (106) enter the ATS (A power and B power inputs) and one cord (109) exits the ATS (power out to the load). The ATS has indicators (107) located beneath a clear crenelated plastic lens (108) that also acts as the air inlets. The ATS (100) also has a communication portal (103) and a small push-button (104) used for inputting some local control commands directly to the ATS (100). The ATS (100) can be mounted on a DIN rail at a rack and avoids occupying rack shelves.

Abstract: A system is disclosed which eliminates problems caused by surges of electric energy which is generated on a utility customer's property and which is fed back onto a utility-owned service line by maintaining a minimum utility provided percentage (MUPP) of power being provided onto a customer-owned dead-end service line. Where the electric energy generated by a utility customer is incrementally excluded from the customer-owned dead-end service line through a plurality of contactors which are controlled by a 120 volt command line.

Abstract: A system and apparatus comprise at least one power supply connected to a terminal bloc, an I/O system configured to receive instructions provided to the control system, a control block connected to the I/O system wherein the instructions provided to the I/O system are converted to a serial output; and a puck connected to the serial output and configured to receive power from the terminal block, to process the serial output, and to output a current.

Abstract: A disclosed apparatus may include (1) a first plurality of power feeds that are electrically ORed to form an channel input, wherein the channel input is electrically coupled to a first channel of a power supply, (2) a first plurality of switches electrically coupled inline on the first plurality of power feeds, wherein the first plurality of switches are individually programmable to open or close electrical continuity, (3) a second plurality of power feeds that are electrically ORed to form an additional channel input, wherein the additional channel input is electrically coupled to a second channel of the power supply, and (4) a second plurality of switches electrically coupled inline on the second plurality of power feeds, wherein the second plurality of switches are individually programmable to open or close electrical continuity. Various other apparatuses, systems, and methods are also disclosed.

Abstract: A vehicle includes a first battery; a power distribution device configured to provide an IGN power source and a BAT power source from the first battery; a second battery; an airbag; and an airbag control device configured to receive power from the IGN power source of the power distribution device, and to deploy the airbag. The airbag control device may be configured to receive power from the BAT power source of the power distribution device when the vehicle is turned off, and to receive power from the second battery when the battery is damaged.

Abstract: Embodiments described herein provided methods and apparatus for controlling switching a power supply of a first network node between an electrical power grid and an alternative power supply in which the first network node is configured to transmit data to a second network node over a data transmission link. The method includes receiving first information indicative of a predicted decrease in a transmission rate of data transmitted by the first network node over the data transmission link. Responsive to receiving the first information, a first request is transmitted to the first network node to switch the power supply of the first network node from the electrical power grid to the alternative power supply.

Abstract: A thermal management system having a first mode of operation configured to transfer heat from a first plurality of components of a vehicle in the first fluid flow path and to selectively transfer heat to at least one of a second plurality of components in a second fluid flow path; a second mode of operation configured to transfer heat from the first plurality of components in the first fluid flow path and selectively transfer heat from the second plurality of components in an alternative second fluid flow path; and a third mode of operation configured to transfer heat from both the first plurality and the second plurality of components of the vehicle in a third fluid flow path. A controller is operable to selectively change the mode of operation between the first mode of operation, the second mode of operation and the third mode of operation based on operating conditions of the vehicle.

Abstract: An assembly for connecting to a high-voltage grid includes a plurality of single-phase transformers, each of which has a transformer tank that is filled with a fluid and is equipped with a core with at least one coil. The coils of the single-phase transformers are at least partly connected together, thereby forming a neutral or star point. In order to permit the assembly to be quickly assembled in situ while at the same time providing a reliable current path for compensation and grounding currents, the coils are connected together by a neutral or star point conductor or rail in order to form the neutral or star point. The neutral or star point conductor or rail is retained in an insulated manner on the transformer tank.

Abstract: A utility meter includes: a rectifier configured to rectify AC voltage from a power grid to generate a primary DC voltage supply; and a primary holdup circuitry, including: first capacitors coupled to a primary DC voltage rail and configured to store energy from the primary voltage supply; a switch coupled to the first capacitors; and a control circuit configured to control the primary holdup circuitry, wherein the control circuit is configured to: determine that a secondary DC voltage of a secondary voltage supply is approximately equal to a first specified threshold voltage; and generate a control signal to causes the switch to turn on and cause the one or more first capacitors to release a portion of the energy stored in the one or more first capacitors to the primary DC voltage rail.

Abstract: The disclosure is directed to an apparatus for generating energy in response to a vehicle wheel rotation. The apparatus may include a first roller comprising a curved roller surface configured to be positioned in substantial physical contact with a first wheel of the vehicle. The first roller may be configured to rotate in response to a rotation of the first wheel. The apparatus may further include a first shaft rotatably couplable to the first roller such that rotation of the first roller causes the first shaft to rotate. The apparatus may further include a first generator operably coupled to the first shaft. The generator may be configured to generate an electrical output based on the rotation of the first shaft and convey the electrical output to an energy storage device or to a motor of the vehicle that converts electrical energy to mechanical energy to rotate one or more wheels of the vehicle.

Abstract: Systems and methods for use with renewable energy resources that provide power to an energy power grid or to one or more motor loads. A control system along with an energy storage/combiner block and a DC/AC inverter is used to condition DC power received from renewable energy sources. The control system receives current and voltage outputs from the inverter along with values indicating current and voltage outputs directly from the renewable energy sources. These are then used to estimate and control motor speed when the system is in the off-grid mode. In addition, the control system uses these inputs to provide the gate pulses that are used to control the three phase AC output power from the inverter.

Abstract: A modular data center and a method of building a modular data center. The modular data center includes a site microgrid including at least one power converter connected to a direct current (DC) bus and a digital power system. The digital power system includes at least one digital power transmitter, a set of transmission lines, and at least one digital power receiver. The modular data center design uses an adiabatic cooling system to cool the modular data center.