Abstract: The present disclosure provides a device to be charged and a charging method. The device to be charged includes: a charging interface; a first charging circuit, coupled with the charging interface, configured to receive an output voltage and an output current of an adapter via the charging interface and to directly apply the output voltage and the output current of the adapter to both ends of a plurality of battery cells coupled in series in the device to be charged, so as to perform a direct charging on the plurality of battery cells. With the present disclosure, heat generated in the charging process can be reduced while ensuring the charging speed.

Abstract: A method and apparatus for monitoring a secondary power device, for accurately checking a state of the secondary power device, and an electronic system including the apparatus are provided. The method of monitoring a secondary power device includes: setting a first reference parameter by using a voltage of at least one capacitor of the secondary power device; setting a second reference parameter by using the voltage of the at least one capacitor and the first reference parameter; and setting a reference level for checking of the state of the secondary power device by using the second reference parameter, wherein the reference level is used in checking of the state of the secondary power device.

Abstract: A power factor correction circuit including: an error signal generation unit configured to output a signal obtained by amplifying an error between the output voltage of a boost chopper and a referential voltage; an oscillation unit configured to output a triangular wave signal; a zero current detection unit configured to detect zero current in an inductor current of the boost chopper; a drive signal generation unit configured to generate a drive signal for the switching element based on a zero current detection signal, the error signal, and the triangular wave signal; and an input interruption detection unit configured to detect an interruption state of an AC input voltage based on the zero current detection signal. When the input interruption detection unit detects an input interruption state, the oscillation unit controls a slope of the triangular wave signal to be larger than the slope when no input interruption state is detected.

Abstract: The invention relates to a grid synchroniser for connecting an AC output of a power converter to the AC grid mains. In one aspect the invention provides a grid synchroniser comprising an inverter controller to control an AC output of the inverter, the controller including a receiver to receive grid data from a grid sensor location remote from said inverter. In another aspect we describe techniques for rapid removal of charge from a control terminal of a power switching device such as a MOSFET, IGBT or Thyristor using a particular driver circuit.

Abstract: A system for providing power over Ethernet emergency lighting is disclosed. The system includes a rechargeable battery pack that is charged without interfering with data signals present on a power over Ethernet link that provides normal lighting. The system includes a power loss monitor for monitoring the presence of normal lighting power present on a power over Ethernet link without interference.

Abstract: Aspects of the present disclosure relate to managing power provided to devices. A first set of radio-frequency identification (RFID) power data can be read, by an RFID reader, from a first RFID tag of a first device electrically coupled to a power supply. The first set of RFID power data can specify a first amount of energy required by the first device if a power loss occurs. An indication that a power loss occurred can be received. In response to the indication that the power loss occurred, the power supply can provide the first amount of energy to the first device.

Abstract: A power conversion apparatus performs power conversion among at least a first device, a second device, and a third device. The power conversion apparatus includes a primary converter configured to perform power conversion between the first device and second device. The primary converter includes a first switch, a second switch, a third switch, a fourth switch, and a capacitor. The second switch, the third switch, the fourth switch, and the capacitor are connected in full bridge configuration to constitute a full bridge converter.

Abstract: A lower-cost power distribution apparatus (PDU) using a lesser number of components that connects with many power supply units. The PDU comprises first and second switching modules, for outputting AC from a first or a second power source. The first switching module and the second switching module automatically switch between opposite states (turned on or turned off) based on the AC power source. At a given instant, the first switching module and the second switching module are in opposite states.

Abstract: The present application is directed in particular to a power adapter, adapted to be connected on the one hand to a power interface of a cordless power tool and adapted to be connected on the other hand to an energy source, in particular mobile energy source, for electrically power the power tool via the power adapter.

Abstract: A DC-to-DC converter, comprising a first, second, and third DC voltage network, and a first, second, and third DC-DC regulator, wherein the first, second, and third regulator each having a DC voltage main connection that is supplied with a DC voltage network voltage related to a common reference potential, a respective DC voltage network current flowing through each connection, the DC-DC regulators being coupled via a first DC-link capacitor connected between a first DC-link potential and a second DC-link potential, and the DC-DC regulators are each coupled with a DC-link regulator, via which the first DC-link potential or the second DC-link potential can be set independently of the DC voltage network voltages and the DC voltage network currents.

Abstract: Backup battery systems for traffic cabinets that control traffic lights are provided herein. Backup battery systems include a controller operably coupled to 1 or more backup battery panels having rechargeable battery cells. Preferred systems can fit and operate entirely within the traffic cabinet. Monitoring and control of the backup system can be operable locally and remotely via internet cloud.

Abstract: A semiconductor switch includes four diodes, two transistors, and a capacitor. The capacitor includes a fourth terminal and a fifth terminal. An anode of a third diode is connected to a third terminal of a first transistor. A cathode of the third diode is connected to a first terminal of the first transistor and to an anode of a first diode. An anode of a fourth diode is connected to a third terminal of a second transistor. A cathode of the fourth diode is connected to a first terminal of the second transistor and to an anode of the second diode. A cathode of the first diode is connected to a cathode of the second diode and to the fourth terminal of the capacitor. An anode of the third diode is connected to the anode of the fourth diode and to the fifth terminal of the capacitor.

Abstract: A method of operating a power system includes connecting an external load to a power outlet of the power system while a power switch of the power system is turned off, where the power switch is coupled between a power supply of the power system and the power outlet; measuring one or more electrical characteristics of the external load while the power switch is turned off; determining, based on the measured one or more electrical characteristics of the external load, whether a demagnetization energy of the external load is within a safe operation range for the power system; and in response to determining that the demagnetization energy of the external load is within the safe operation range, turning on the power switch.

Abstract: Apparatus, consisting of a power supply having a first electrical connection to a relatively high voltage source and connectable to ablation circuitry in a catheter via a second electrical connection. There are rechargeable first and second subsidiary power sources in the power supply. The apparatus also has a control unit, and a first switch alternately connecting the ablation circuitry to the first and second subsidiary power sources responsively to control signals from the control unit. The apparatus also has a second switch alternately connecting one of the first and second subsidiary power sources to the high voltage source for recharging thereof responsively to the control signals while the one of the first and second subsidiary power sources is disconnected from the ablation circuitry and another of the first and second subsidiary power sources is connected to the ablation circuitry by the first switch.

Abstract: A magnetic field is formed at a predetermined region. A magnetic field formation device configured to generate a variable magnetic field at a predetermined region includes power supplying resonators. All of the power supplying resonators are provided so that coil surfaces oppose the predetermined region, and at least one of the power supplying resonators is provided to have a coil surface direction intersecting with the coil surface direction of the other one of the power supplying resonators.

Abstract: Example implementations relate to concurrent alternating-current and direct-current. In one example, a device comprises a power module connected to a first power outlet, the power module connected to a second power outlet, and a controller to the power module to concurrently provide alternating-current (AC) power to the first power outlet and direct-current (DC) power to the second power outlet by switching a transistor including switching circuitry in response to an absence of AC input power to the device.

Abstract: A power busway tap box with integrated uninterruptable power supply (UPS) functionality is enabled. A busway may be utilized to distribute electrical power throughout a data center. A busway tap box may incorporate one or more components providing UPS functionality. When the busway is distributing alternating current (AC) power, the tap box may incorporate a rectifier, an electrical energy storage device (e.g., a lithium-ion battery), and an inverter. The tap box may keep a substantially conventional form factor, or an extended form factor to accommodate larger electrical energy storage device sizes. The busways may run overhead in a data center and the tap boxes may physically couple with the overhead busways and be disposed beneath them. By distributing the UPS functionality throughout the data center, the impact of UPS failures may be lowered and/or environmental maintenance costs may be reduced.

Abstract: A UPS with voltage-balancing state detection of batteries includes a processor, a voltage measurement module, a voltage control module, a battery pack and a display unit. Each of the voltage measurement module and the voltage control module is connected to the processor and the battery pack. The processor is connected to the display unit, generates a voltage index value according to voltage values measured by the voltage measurement module and a voltage-balancing state according to the voltage index value and a set of index ranges, controls charging to the battery pack according to the voltage values through the voltage control module, acquires an updated voltage-balancing state of the battery pack, and instructs the display unit to display the voltage-balancing state to prompt users for battery replacement when the voltage-balancing state and the updated voltage-balancing state acquired within a state-holding time are identical.

Abstract: A method for detecting a voltage disturbance on an electrical line coupled to a utility that provides three-phase electrical AC power signals to a critical load that includes a transformer. The method includes reading instantaneous voltage measurements at a high sample rate of each of the three-phase power signals, and calculating a flux in the transformer at the sample rate for each of three-phase power signals by adding the instantaneous voltage measurements at the current sample point and at a previous sample point. The method includes calculating a flux error for each of the three-phase signals at the sample rate as a difference between the newly calculated flux and the oldest calculated flux. The method determines whether the flux error for any of the three-phase power signals is greater than a first predetermined percentage or less than a second predetermined percentage, and if so, identifies a voltage disturbance.

Abstract: A power supply includes a power converter and a battery. A logic circuit controls division of output of power, between the power converter and the battery, to an output of the power supply.

Abstract: A method for managing a power supply comprises an Extension Power over Ethernet System receiving a trigger event. A determination is made as to whether the trigger event would cause a power budget of a power supply management device to increase or decrease; if the power is increased, the power is provided to a switch with a higher priority; if the power is decreased, power can be provided to a switch with a higher priority from a lower priority. A device for power supply management is also disclosed, the method and the device can effectively allocate power as required and avoid equipment overload.

Abstract: A magnetic field is formed at a predetermined region. A magnetic field formation device configured to generate a variable magnetic field at a predetermined region A includes: at least one power supplying resonator configured to generate the variable magnetic field; and power-supplying coils configured to generate an induced current in the at least one power supplying resonator, all of the power-supplying coils and the at least one power supplying resonator being disposed so that coil surfaces oppose the predetermined region A, and at least one of the power-supplying coils being disposed to have a coil surface direction which intersects with coil surface directions of the other power-supplying coils.

Abstract: An information handling system with multiple power input ports, such as USB ports, capable of receiving power from external power supplies may control power received from the power supplies. A first controller may detect a first power supply coupled to a first power input port of the system and may allow power to flow from the external power supply to the system. Any additional power supplies detected by controllers may be blocked from providing power to the system while the first power supply is providing power.

Abstract: An energy storage device for a motor vehicle includes a first energy store and a second energy store for storing electrical energy, a charging connection for charging the energy stores, an operating connection for operating a load on the energy storage device, and a switching device which has a plurality of switching elements and via which the energy stores can be connected selectively in series or in parallel. A fifth switching element of the switching device is permanently electrically coupled to the electrical poles of opposite polarity of the energy stores and the energy stores can be connected in series via the fifth switching element independently of the other switching elements of the switching device.

Abstract: A battery charge system including an adapter node, a system node, a battery, a first isolation switch coupled between the adapter and system nodes, a second isolation switch coupled between the battery and system nodes, a boost converter, and a controller. The controller turns off the first isolation switch and turns on the second isolation switch during a battery mode, activates the boost converter when an adapter voltage is detected, turns off the second isolation switch when the system voltage rises above the battery voltage, and turns on the first isolation switch when the system voltage rises to an operating voltage level. The boost converter may then be turned off once in the adapter mode. The second isolation switch may initially be turned on partially at a low current level when the adapter is detected, and then turned fully on when the system voltage is at the operating voltage level.

Abstract: A method controls an UPS with a system having: first and second terminals, a switch having: first and second switch terminals respectively connected to the first and second terminals; first and second thyristors connected between the first and second switch terminals in anti-parallel; and an inverter connected to the second terminal and the energy store. Switch current and a first potential at the first terminal are detected. In a first fault, where the first potential drops past a first rule and the switch current rises above a second rule: a second potential at the second switch terminal is set using the inverter so the switch current becomes zero. Then the switch current is compared with a second threshold, and if it is exceeded, a first check result is positive, otherwise it's negative. When positive, the second potential is reversed.

Abstract: One embodiment of the present invention discloses a configurable microcontroller unit (“CMU”) capable of providing one or more programmable input and output (“I/O”) interfaces. The CMU includes a processor, I/O ports, and programmable microcontroller (“PM”). The processor is configured to communicate with a host central processing unit (“CPU”) based on a set of predefined instruction code. The I/O ports are used to transmit information between the processor and an external device. The PM facilitates communication interfaces between the I/O ports and one or more external devices via one or more configurable communication standards selected by the PM in accordance with interface programming microcode.

Abstract: The disclosure relates to controlling electricity production by a facility of photovoltaic panels in order to establish a power reserve. A method is carried out iteratively and includes: issuing respective setpoints to a number k of inverters among the set of N inverters, so that each produces a maximum power, where k<N, the k inverters being determined for a given iteration of the method, and obtaining, from the k inverters, measurements of the maximum power respectively produced by the k inverters and storing these measurements in memory with N-k other measurements obtained from N-k additional inverters during preceding iterations of the method; estimating, by reading the contents of the memory, a total maximum power able to be produced by the set of N inverters of the facility, and obtaining information relating to an amount of reserve power to be established, and determining an overall power to be produced.

Abstract: Embodiments of the present invention may include control methods employed in multiphase distributed energy storage systems that are located behind utility meters typically located at, but not limited to, medium and large commercial and industrial locations. These multiphase distributed energy storage systems can operate semi-autonomously, but may be in frequent contact with a cloud-based optimization engine that is configured to develop energy control solutions based on various data inputs and to communicate these energy control solutions to one or more of the distributed energy storage systems. Due to characteristics of the electric load location and/or the use of on-site power generation, imbalances in the power draw per phase can be created within the electric load location. Therefore, embodiments of the invention may include systems and methods that are used to control and/or limit the imbalance in power flowing through one phase versus other phases at the electric load location.

Abstract: A semiconductor package includes a VLSI semiconductor die and one or more output circuits connected to supply power to the die mounted to a package substrate. The output circuit(s), which include a transformer and rectification circuitry, provide current multiplication at an essentially fixed conversion ratio, K, in the semiconductor package, receiving AC power at a relatively high voltage and delivering DC power at a relatively low voltage to the die. The output circuits may be connected in series or parallel as needed. A driver circuit may be provided outside the semiconductor package for receiving power from a source and driving the transformer in the output circuit(s), preferably with sinusoidal currents. The driver circuit may drive a plurality of output circuits. The semiconductor package may require far fewer interface connections for supplying power to the die. Multi-output POL circuits may be used in conjunction with on-chip rail-selection and regulation circuitry to further improve efficiency.

Abstract: A vehicle may include an auxiliary battery to prevent full discharge of a main power source while remotely controlling electronic devices of the vehicle, wherein the vehicle may include a communication device configured to receive a control signal indicating a control command from a mobile device; a controller configured to control a target of control based on the control signal; and a power management device including an auxiliary battery and configured to supply power to the controller using the auxiliary battery when the communication device receives the control signal while an ignition of the vehicle is turned off.

Abstract: In an example, a circuit comprising a first inductor coupled between a first node and a second node, a first PMOS having a source terminal coupled to the second node and a drain terminal coupled to a third node, a second PMOS having a source terminal coupled to a ground voltage potential and a drain terminal coupled to the second node, a third PMOS having a source terminal coupled to a fourth node and a drain terminal coupled to the third node, a fourth PMOS having a source terminal coupled to the ground voltage potential and a drain terminal coupled to the fourth node, a NMOS having a source terminal coupled to the third node and a drain terminal coupled to a fifth node, a second inductor coupled between the fourth node and the fifth node, and a controller.

Abstract: An emergency LED lighting system maintains power to an LED lighting source based on measured voltages and currents provided to the LED lighting source; rolls back or decreases power provided to an LED lighting source over time in order to increase the amount of time the battery can power the LED lighting source; executes a soft start procedure, such that the power provided to the LED lighting source is gradually ramped up during activation of the LED lighting sources; identifies a type of battery coupled to the emergency LED lighting system; cycles the emergency LED lighting system between charging mode and standby mode to reduce power consumption over a window of time; detects AC power or an absence of AC power; and/or uses a status LED to communicate information about the emergency LED lighting system with a remote device.

Abstract: A method of operating a printing device during a power loss event includes, with a power loss protection supply voltage generator coupled to a printhead driving circuit, maintaining a power loss protection supply voltage (VDD_plp) to the printhead driving circuit until a high voltage power supply (VPP) to the high voltage devices drops below a threshold voltage.

Abstract: Systems and methods are disclosed for data storage performance scaling based on external energy. In certain embodiments, a system may comprise a data storage device having an interface to communicate with an external device, a nonvolatile memory, and a circuit. The circuit may be configured to receive an indication via the interface of power resources available to the data storage device from the external device in case of a power loss event, adjust a performance metric of the data storage device to apply when accessing the nonvolatile memory during normal power availability based on the indication, and perform operations during normal power availability based on the performance metric.

Abstract: An electrical power system for a vehicle includes an interface electrically connected to a node and a battery electrically connected to the interface. The interface includes circuit elements that permit current flow between the battery and the node when and only when the voltage of the node is below a threshold.

Abstract: An automatic transfer switch for power over ethernet lighting and powered devices preferably includes at least one transfer switch module, a carrier board, a power supply and a housing. Each transfer switch module preferably includes a plurality of input transformers, a plurality of output transformers, a microcontroller, a power source equipment device, a power transfer device and a LAN Multiplexer. The at least one transfer switch module is retained on the carrier board. The plurality of input transformers receive power and data inputs from power sourcing equipment. If a backup power switch detects a loss of power, a signal will be received by the microcontroller of the at least one transfer switch module. The microcontroller will instruct the power transfer device to supply electrical power to the plurality of output transformers. Data will also be supplied by the microcontroller to the LAN Multiplexer.

Abstract: A method for stabilizing a frequency in an AC voltage grid includes exchanging active power between the AC voltage grid and an energy storage device of a compensation installation in which the energy storage device is connected to the AC voltage grid. An electrical power is transmitted in an interconnector that connects the AC voltage grid to a further AC voltage grid. The electrical power is measured. The exchange of the active power is initiated by a control device of the compensation installation depending on a direction of the transmitted power. An installation for stabilizing an AC voltage grid can be used, in particular, to carry out the method.

Abstract: An example method includes monitoring a state of charge of one or more energy storage devices that are part of an uninterruptable power supply (UPS) that is connected electrically to a power distribution grid; obtaining information that is based, at least in part, on a voltage on the power distribution grid; and outputting a control signal that is based on the state of charge and the information. The control signal is for controlling power electronics either to output voltage from the one or more energy storage devices to the power distribution grid or to charge the one or more energy storage devices using voltage from the power distribution grid.

Abstract: An electrical control system is provided. A first slave IC generates a first message indicating that a first battery cell has an overvoltage condition that is received by a communication IC. The communication IC sets a fault line coupled between the communication IC and a secondary microcontroller to a first logic level indicating that an overvoltage condition has been detected. The secondary microcontroller sends a message to a primary microcontroller indicating that the overvoltage condition has been detected in response on the fault line having the first logic level. The primary microcontroller commands a contactor control system to set each of the first and second contactors to the open operational state, in response to receiving the message.

Abstract: A configuration instruction associated with configuring a plurality of batteries which supply power to a plurality of motors in a vehicle is received. The batteries are configuring as specified by the configuration instruction, where the batteries are able to be configured in a plurality of configurations, including: a first configuration where at least some of the batteries are electrically connected together in parallel and a second configuration where at least some of the batteries are electrically connected together in series.

Abstract: An uninterruptible power supply comprising a first switch unit, a charging circuit, a first voltage conversion circuit, a second voltage conversion circuit, a second switch unit and a control circuit is provided. When the uninterruptible power supply performs a battery activation operation, the control circuit controls the first switch unit to provide the AC power received by the uninterruptible power supply to a terminal of a bypass path, controls the first switch unit to provide the output of a battery to the first voltage conversion circuit, controls the second switch unit to electrically couple the output terminal of the uninterruptible power supply to the other terminal of the bypass path, controls the charging circuit to stop charging the battery, and controls the first voltage conversion circuit to perform a DC-DC conversion operation. In addition, a corresponding battery activation operation method is also provided.

Abstract: A method for performance analysis and use management of a battery module is disclosed, wherein the battery module includes a multitude of interconnected battery cells and a battery management system with a plurality of dedicated analysis/control units (ACUs) that analyze performance of the battery module, the ACUs being assigned to individual battery cells and/or battery blocks of battery module. The method includes measuring current and voltage of one or more of an individual battery cell and a battery block; calculating a charge removal from the one or more of the individual battery cell and the battery block; calculating a loading charge of the one or more of the individual battery cell and the battery block; determining the remaining charge of the one or more of the individual battery cell and the battery block; and failure monitoring of the one or more of the individual battery cell and the battery block.

Abstract: A smart energy storage system is described. The system includes a smart energy storage unit coupled to a selected circuit of a local electric grid, and configured for being charged so as to withdraw and store energy from the local electric grid, and discharged for supplying energy to the local electric grid. The smart energy storage unit includes an energy storage cell configured for being charged so as to withdraw and store energy from the local electric grid, and discharged for supplying energy to the local grid, and a storage cell management unit for controlling the energy storage cell.

Abstract: A power supply control apparatus according to the embodiment includes a microcomputer. The microcomputer is configured to: acquire switching information for switching a power supply pathway supplying power to a load between (i) a first pathway supplying power from a first battery to the load and (ii) a second pathway supplying power from a second battery to the load. When the microcomputer switches the power supply pathway between the first pathway and the second pathway, the microcomputer activates or deactivates a voltage converter while turning off a semiconductor relay so that power is supplied to the load through the first pathway via a body diode during a time period in which the voltage converter completes an activation process or a deactivation process.

Abstract: Systems and methods for boosting battery voltage with boost converters are provided. Aspects include coupling a discharge path of a battery to an input side of a power converter in a power supply, wherein the power supply comprises a rectifier and the power converter. A charge path of the battery is coupled to an output side of the power converter and a processor monitors an output voltage of the power converter. The processor also monitors an input voltage of the power converter and responsive to the output voltage of the power converter dropping below a threshold voltage, the processor enables the discharge path.

Abstract: An efficient, modular, direct current (DC) uninterruptible power supply (UPS) for at least one server of a data center is disclosed. The single-conversion DC UPS includes an AC-DC converter, an energy storage device electrically coupled to the output of the AC-DC converter, and a single conversion server supply DC-DC converter electrically coupled to the AC-DC converter and the energy storage device, which may be a low-voltage lithium-ion battery or combined with an ultra capacitor. The DC UPS may be incorporated into a UPS system for a data center including a plurality of server rack assemblies and a plurality of cooling distribution units (CDUs). The UPS system includes an electric generator, an AC UPS electrically coupled between the electric generator and the plurality of CDUs, and a plurality of DC UPSs coupled between the electric generator and the plurality of server rack assemblies.

Abstract: Provided are a system and a method which allow an improved operating time of an energy storage system in a power system by reflecting a state of charge of a battery and a state of the power system on a control of an amount of charging power or discharging power of the energy storage system. The system includes: a battery configured to charge or discharge power; a battery monitor configured to monitor a state of the battery; a power system monitor configured to monitor a state of a power system; and a charge/discharge controller configured to control an amount of charging power or an amount of discharging power of the battery using a state of charge of the battery detected by the battery monitor and the state of the power system detected by the power system monitor.

Abstract: A communication module is configured to obtain, from a first computing device associated with an energy receiver, an energy request. The energy request includes a location of the energy receiver and an amount of energy requested. A selection module is configured to generate a list of energy sources available to satisfy the energy request. The communication module is further configured to: transmit the list of energy sources to the first computing device for display; receive, from the first computing device, a selection of one energy source from the list of energy sources; and transmit, to the first computing device and a second computing device associated with the selected one energy source, a location at which the energy request is to be fulfilled. An energy transfer module is configured to selectively enable an electrical energy transfer from the selected one energy source to the energy receiver.

Abstract: Embodiments of the present invention include control methods employed in multiphase distributed energy storage systems that are located behind utility meters typically located at, but not limited to, medium and large commercial and industrial locations. Some embodiments of the invention use networked multiphase distributed energy storage systems located at an electric load location or installed at interconnection points along the electric power distribution grid to provide a means for balancing the load created from an electric charging station, which are adapted to transfer power between one or more electric vehicles and the electric power grid.