Abstract: A voltage converter includes a converter module to convert an input voltage to an output voltage, a current sharing terminal to be connected in parallel with a current sharing terminal of each of at least one other voltage converter, and a control circuit to generate a first voltage signal proportional to an output current of the converter module with an adjustable first proportional coefficient and output the first voltage signal to the current sharing terminal, generate a first current signal proportional to a second voltage signal at the current sharing terminal with a second proportional coefficient, subtract the output current of the converter module from the first current signal to generate an error current signal, and adjust the output voltage of the converter module based on the error current signal.

Abstract: An objective of the disclosure is to provide a power supply cell of a power supply system and a power supply system using the same.

Abstract: In a network data center, a plurality of modules provide power to equipment racks. Each of the modules has a plurality of taps which are connected by internal switching elements to power mains through an internal power distribution bus, such that each of the modules can switch any of the plurality of taps to two of the three phases of power. Each of the equipment racks has a multi-branch power distribution unit, branches of which may be connected together to receive power from the same tap. The number of branches in each multi-branch power distribution unit is configurable to adapt to the power requirements of the equipment rack. Power and control signals for the logic and control circuits of the modules are supplied separately from the power mains by a coordinating computer which has the modules connected in a redundant ring topology.

Abstract: A locomotive, a first chopper circuit, and a second chopper circuit integrating a traction motor with an energy storage device are disclosed. The locomotive includes a prime mover, an energy management device, a DC power bus, a traction motor, an energy storage device, a resistor grid, and a chopper circuit. Each chopper circuit is controlled by the energy management device and includes a plurality of power semiconductors with variable switching frequency. The traction motor may be capable of operating in a motoring mode, where power is controllably supplied by either the prime mover and/or the energy storage device; and a dynamic braking mode, where generated power is controllably allocated to the energy storage device and/or the resistor grid.

Abstract: In an aspect, a modular battery configuration with a centralized bus on an electric aircraft, including an electric aircraft which comprises a propulsor configured to generate thrust and a centralized electrical bus connected to the propulsor. A plurality of modular battery packs is configured to provide electricity to the centralized electrical bus, wherein the plurality of modular battery packs is arranged about a center of gravity of the electric aircraft.

Abstract: A power supply comprises voltage regulation circuitry, a load-share controller, and overcurrent protection circuitry. The voltage regulation circuitry is configured to output a regulated voltage. The load-share controller is configured to control the voltage regulation circuitry to adjust the regulated voltage responsive to a load-share voltage signal (LSV) that indicates an amount of load current being delivered to a load. The overcurrent protection circuitry is configured to selectively couple the regulated voltage to the load. When the load current exceeds a threshold current, the overcurrent protection circuitry is configured to decouple the regulated voltage from the load. While the regulated voltage is decoupled from the load, and when the LSV signal indicates that load current is being delivered to the load by a different power supply, the overcurrent protection circuitry is configured to recouple the regulated voltage to the load.

Abstract: A solid-state switch assembly includes a base plate and an electrically insulating layer affixed to the base plate. First, second, third, and fourth power traces are affixed to the electrically insulating layer. First semiconductor devices are arranged on the first power trace to control power flow between the first power trace and the second power trace, second semiconductor devices are arranged on the second power trace to control power flow between the second power trace and the third power trace, and third semiconductor devices are arranged on the third power trace to control power flow between the third and fourth power traces. A first signal conductor communicates with the first semiconductor devices. A second signal conductor communicates with the second semiconductor devices. A third signal conductor communicates with the third semiconductor devices.

Abstract: An output control apparatus that controls opening and closing between an output terminal connected to an external apparatus and a power supply terminal to which power for the external apparatus is supplied is provided. The output control apparatus includes a first switching element and a second switching element that are connected in series between the power supply terminal and the output terminal, a data generation portion that generates output data for turning on and off the first switching element and the second switching element based on a control command received from outside, a first controller that controls drive of the first switching element, and a second controller that controls drive of the second switching element.

Abstract: Disclosed embodiments of a power converter include a power output stage for generating a first voltage output and an auxiliary power output stage for generating a second voltage output. The power converter further includes a pulse frequency modulation (PFM) controller for controlling the power output stage in response to the first voltage output generated by the power output stage during a first period of time in which the power output stage operates in a PFM mode, and a pulse width modulation (PWM) controller for controlling the auxiliary power output stage in response to the second voltage output generated by the auxiliary power output stage during a second period of time. At least a portion of the first period of time is concurrent with the second period of time.

Abstract: An electric vehicle including: a battery configured to store electric power; a motor electrically connected to the battery through a first wire; an external port connected to a second wire branched from the first wire, the external port being used for input/output of electric power from/to an external device; a converter provided between the external port and the first wire on the second wire; an electric generator provided on a third wire bypassing the converter from the second wire; a first switch provided on the third wire on the external port side relative to the electric generator; and a second switch provided on the third wire on an opposite side of the first switch relative to the electric generator.

Abstract: An asymmetric two-stage DC-DC switching converter, using multi-stage phases, in parallel to single-stage phases, to supply an output voltage, is described. An intermediate voltage supply is used to provide supply to some second-stage phases. Several different silicon dies are used to implement a multi-phase DC-DC switching converter, where different phases are located on different dies, and different silicon processes are used to implement the different dies. The silicon die containing the faster phases, and the fast-response control circuitry, is placed closer to the load, than the silicon die containing the slower phases, and the larger value inductors. A single control signal is used to control all the single-stage and second-stage phases. A way of implementing a control scheme for the second-stage phases that allows them to operate independently from the first-stage phases, but still regulate correctly in the DC-DC switching converter system, is described.

Abstract: A terminal device includes a state acquisition unit that notifies, when an amount of electric power consumption of the terminal device is small, a docking station of a small electric power consumption state and a power-on management unit that notifies, in response to an instruction to turn on a power supply, the docking station that the power supply is turned on and that starts an electric power supply to a CPU. The docking station includes a charge setting unit that decreases, when a notification of the small electric power consumption state is received from the state acquisition unit, electric power consumption of the docking station when a notification that the power supply is turned on is received from the power-on management unit and increases the electric power consumption of the docking station when the notification that the power supply is turned on is not received from the power-on management unit.

Abstract: An uninterruptible power supply system, including: a plurality of uninterruptible power supply devices which are connected in parallel with respect to a load, and switch between power supplies supplying power to the load depending on states of the power supplies; a control unit controlling an operation of switching between the power supplies by the uninterruptible power supply devices; a storage battery connected to the plurality of uninterruptible power supply devices in common; a converter converting AC power; a contactor switching between the DC power converted by the converter and DC power input from the storage battery; and an inverter inverting the DC power and supplying the power to the load. The control unit deactivates the inverter which does not contribute to supplying a power amount required for the load, of a plurality of inverters.

Abstract: A power conversion system includes at least two power converters and a current sharing bus, each power converter including a switching circuit, a power conversion circuit configured to receive an input voltage via the switching circuit and to provide a local output current, an output sense circuit configured to detect the local output current and to generate a local output current sense signal, a current sharing terminal coupled to the local output current sense signal via a resistor and coupled to the current sharing bus; and a PWM controller configured to adjust a duty cycle of the switching circuit based at least in part on the local output current sense signal provided by the output sense circuit and an average current signal on the current sharing bus.

Abstract: A protective module is described for a power supply of a bus communication unit. The protective module includes an input terminal for connecting to a power supply unit comprised by the bus communication unit; an input/output terminal for connecting to a second power supply unit external to the bus communication unit; an output terminal for providing power supply to the bus communication unit; and a relay unit adapted to (i) isolate the input terminal from the output terminal when a voltage at the input terminal is above a first upper threshold value or below a first lower threshold value, and to (ii) isolate the input/output from the output terminal when a voltage at the input/output terminal is above a second upper threshold value. Further, there is described a power supply for a bus communication unit and a bus communication system.

Abstract: This disclosure describes a more efficient and configurable power allocation scheme for redundant power supply (RPS) systems used in network switches. This allocation scheme allows the system owner to assign power from a shared RPS unit to higher priority devices in any network switch in the system. This permits more granularity in assigning the RPS with backup power available to devices such as ports residing within individual switches in a multiple switch network. An efficient power allocation scheme for RPS allows the user to define the system priority of various devices for backup power according to the user's preferences. The user may assign the RPS to user-defined high priority devices in any piece of equipment. This makes RPS power allocation more flexible by offering the user more setup options for backup power.

Abstract: An electronic device having a charging function is provided. The electronic device includes a conversion unit for converting an Alternating Current (AC) voltage to a Direct Current (DC), a first charging unit for generating a first charging voltage or current using the DC voltage, and an output unit for providing the DC voltage and the first charging voltage or current to an external device. Various other implementations are possible.

Abstract: The present disclosure provides a solar cell pack and a method for balancing currents of solar cell modules. The solar cell pack includes a first solar cell module, a second solar cell module, a first balancer, a sampler and a controller. A negative pole of the first solar cell module is electrically connected to a positive pole of the second solar cell module. The first balancer is electrically connected to the first and the second solar cell modules in order to balance the current flowing through the both solar cell modules. An input terminal of the sampler is electrically connected to the first and the second solar cell modules. An output terminal of the sampler is electrically connected to an input terminal of the control unit. An output terminal of the control unit is electrically connected to an input terminal of the first balancer.

Abstract: A power transmission system, which has a plurality of DC power sources and a load that receives a supply of DC power, is characterized in that: a power priority retrieving device is attached to each DC power source; control is performed by a controller; and the amount of power to be delivered from a DC power source to which a power priority retrieving device is attached to the load is determined on the basis of the retrieved power priority.

Abstract: Disclosed is a low drop-out voltage regulator circuit with a distributed output network coupled to a pixel array for use in image sensor circuitry. The regulator circuit comprises voltage regulating circuitry and a distributed output network, wherein the distributed output network comprises drive transistors disposed along and connected between a supply track and an output track. The spatial distribution of the drive transistors improves heat dissipation within the regulator circuit, and a combination of low current flow and regulated output voltage reduces IR drop across the output track. The improved heat dissipation increases device lifespan and performance, whereas the reduction in IR drop across the output track provides better pixel response, readout uniformity, and image quality.

Abstract: A method for balancing input current with at least two parallel power supplies, including the steps of defining an input current difference tolerance, measuring input current from the at least two parallel power supplies, calculating an absolute value of the difference between the two measured input currents, and when the calculated value exceeds the tolerance, performing the subset of steps including employing an adjustment technique to calculate new operating parameters for the two power supplies, configuring the two power supplies with the new operating parameters, and repeating the steps above except for the defining step.

Abstract: Load sharing apparatus for load sharing between a plurality of power supplies (1, 2). The apparatus comprises one or more load sharing modules (Share1, Share2), each for association with a respective power supply. The or each load sharing module comprises load determining means for generating a signal which represents a load value corresponding to the power or current supplied by the respective power supply, and voltage control means for controlling the output voltage of the respective power supply to vary inversely with said load value at a first rate when the load value is below a threshold value, and for controlling the output voltage of the respective power supply to vary inversely with said load value at a second rate when the load value equals or exceeds said (first) threshold value. Said second rate is greater than said first rate.

Abstract: A data storage device (DSD) is disclosed comprising a non-volatile memory (NVM), and control circuitry comprising a first voltage regulator having a first output operable to generate a first current, and a second voltage regulator having a second output operable to generate a second current. When in an independent mode, the first current is operable to supply a first load independent of the second current, and the second current is operable to supply a second load independent of the first current. When in a parallel mode, the second output is coupled to the first output in order to increase the first current supplied to the first load and decrease the second current supplied to the second load.

Abstract: Disclosed is a memory array structure, where a wordline driver selectively applies a high on-state voltage (VWLH) or a low off-state voltage (VWLL) to a wordline. VWLH has a slightly negative temperature coefficient so that it is regulated as high as the gate dielectric reliability limits allow, whereas VWLL has a substantially neutral temperature coefficient. To accomplish this, the wordline driver is coupled to one or more voltage regulation circuits. In one embodiment, the wordline driver is coupled to a single voltage regulation circuit, which incorporates a single voltage reference circuit having a single output stage that outputs multiple reference voltages. Also disclosed is a voltage reference circuit, which can be incorporated into the voltage regulation circuit of a memory array structure, as described, or, alternatively, into any other integrated circuit structure requiring voltages with different temperature coefficients. Also disclosed is a method of operating a memory array structure.

Abstract: Various techniques are employed alone or in combination, to reduce the levelized cost of energy imposed by a power plant system. Solar energy concentrators in the form of inflated reflectors, focus light onto photovoltaic receivers. Multiple concentrators are grouped into a series-connected cluster that shares control circuitry and support structure. Individual concentrators are maintained at their maximum power point via balance controllers that control the flow of current that shunts this series connection. DC current from clusters is transmitted moderate distances to a centralized inverter. The inductance of transmission lines is maximized using an air-spaced twisted pair, enhancing the performance of boost-type three phase inverters. Cluster outputs are separate from individual inverters in massively interleaved arrays co-located at a central location.

Abstract: The invention can provide for a power supply, and in particular a fieldbus power supply, comprising a plurality of power supply modules each arranged to output power on a plurality of channels; a current share controller arranged to share an output current requirement across the plurality of power supply modules and wherein; at least a second of the plurality of channels in each module is arranged to track the loading of the first of the plurality of channels in each respective module and so that a multichannel and multimodule power supply with reduced power handling requirements for each module can be provided.

Abstract: An apparatus and method for load sharing among N current supplies, where N>1. N current supply paths are coupled to corresponding N independent power sources, respectively. A system load is coupled to the outputs of the N current supply paths to receive N current supplies. There is a common current share bus configured to connect to the N current supply paths to provide a common current share signal, used to indicate the current contribution needed from each of the N current supply paths. In this configuration, each of the N current supply paths adjusts an adjustable voltage drop between its power source and the current supply it provides to the system load in accordance with the common current share signal so that the current supplied from each current supply path is consistent with the common current share signal.

Abstract: According to one aspect, embodiments of the invention provide a method of operating a UPS system having a first UPS and a second UPS, the method comprising powering on the first UPS, receiving power from a first input power source coupled to an input of the first UPS, providing power to a load coupled to an output of the first UPS, adjusting the power provided to the load by the first UPS in response to power characteristics of the first UPS and power characteristics of the second UPS.

Abstract: A method and system to charge efficiently and safely batteries that power an electronic device and are comprised in an electronic device. The method and system performs measurement of electrical currents flowing in different branches of an electrical circuit that comprises the batteries and determines if there if there is a battery connection fault. The charge current used to charge the batteries is adjusted in accordance with the detected fault or absence thereof, in order not to exceed a safe current limit.

Abstract: A load sharing power system is provided including a plurality of generator sets configured to generate an electrical power supply. Each of the plurality of generator sets includes a driver operatively coupled to a drive shaft, such that the driver is configured to impart rotary motion to the drive shaft, and a generator operatively coupled to the drive shaft. The generator is configured to convert the rotary motion of the drive shaft to the electrical power supply. The system further includes a plurality of generator set controllers. Each of the plurality of generator set controllers is operatively coupled to a respective one of the plurality of generator sets.

Abstract: Disclosed is a memory array structure, where a wordline driver selectively applies a high on-state voltage (VWLH) or a low off-state voltage (VWLL) to a wordline. VWLH has a slightly negative temperature coefficient so that it is regulated as high as the gate dielectric reliability limits allow, whereas VWLL has a substantially neutral temperature coefficient. To accomplish this, the wordline driver is coupled to one or more voltage regulation circuits. In one embodiment, the wordline driver is coupled to a single voltage regulation circuit, which incorporates a single voltage reference circuit having a single output stage that outputs multiple reference voltages. Also disclosed is a voltage reference circuit, which can be incorporated into the voltage regulation circuit of a memory array structure, as described, or, alternatively, into any other integrated circuit structure requiring voltages with different temperature coefficients. Also disclosed is a method of operating a memory array structure.

Abstract: A control device of a plurality of switching converters is disclosed; each converter comprises at least one power switch and is associated with a control circuit of the at least one power switch. The control device comprises means suitable for comparing a signal representative of the load of the plurality of converters with a plurality of reference signals and suitable for enabling or disabling at least one of said plurality of control circuits in response to said comparison.

Abstract: The present disclosure provides a solar cell pack and a method for balancing currents of solar cell modules. The solar cell pack includes a first solar cell module, a second solar cell module, a first balancer, a sampler and a controller. A negative pole of the first solar cell module is electrically connected to a positive pole of the second solar cell module. The first balancer is electrically connected to the first and the second solar cell modules in order to balance the current flowing through the both solar cell modules. An input terminal of the sampler is electrically connected to the first and the second solar cell modules. An output terminal of the sampler is electrically connected to an input terminal of the control unit. An output terminal of the control unit is electrically connected to an input terminal of the first balancer.

Abstract: A control unit of a system stabilization device uses a fluctuation detection block (60) to determine fluctuation components included in the active component and reactive component currents of a system current and fluctuation components included in the frequency signal and the amplitude signal of a system voltage. The high frequency cut-off of the fluctuation detection block (60) is set to be f1; the low frequency cut-off is set to be f2. The fluctuation detection block (60) is composed of a low-pass filter (61) with a time constant of T1, a low-pass filter (62) with a time constant of T2, a subtracter (63) which outputs the difference, between the output signals of the filter (61) and the filter (62), and a feedback circuit (64) which provides feedback on the output of the subtracter (63) to the filters (61, 62). Thus, stability is ensured without using a current detector.

Abstract: A distributed power management system may include a communication bus and a plurality of POL (point-of-load) regulators coupled to the communication bus, and configured in a current sharing arrangement in which each POL regulator of the plurality of POL regulators has a respective output stage coupled to a common load and configured to generate a respective output current. Each POL regulator may have a respective phase in the current sharing configuration, and may transmit and receive information over the bus according to a bus communication protocol corresponding to the bus.

Abstract: The present invention relates to a power management system comprising at least one power management subsystem. Each power management subsystem comprises a first power module coupled to a first load and comprising at least one first power supply for supplying power to the first load; a second power module coupled to a second load and comprising at least one second power supply, wherein at least one second power supply is retractably installed in the second power module and selectively coupled to the second load; and a pass-through module comprising at least one pass-through unit retractably installed in the second power module to replace with the at least one second power supply and selectively connecting the first power module to the second load for allowing the first power module to supply power to the second load.

Abstract: An apparatus and system for preventing branch circuit current overload in a non-dedicated branch circuit where current is supplied at least in part by a co-generation power system through an electrical receptacle or outlet. Co-generation systems of this type are typically used in residential applications and can include solar photovoltaic systems and wind turbines. The apparatus modulates or adjusts the current flowing into the branch circuit from the co-generation power system so that the apparatus does not cause the combination of current supplied from the utility power grid into the branch circuit and current supplied by the co-generation system into the branch circuit outlet to exceed the branch circuit current capacity.

Abstract: An arrangement with a photovoltaic generator is provided that can be connected to the input of a power inverter, the output of which is connected to a supply network. The arrangement further comprises an asynchronous machine parallel to the output of the power inverter, which asynchronous machine is driven by an internal combustion engine.

Abstract: A semiconductor IC device capable of power-sharing includes a first power line configured to be supplied with a first power, a second power line configured to be supplied with a second power, a switching block configured to connect the first power line with the second power line in response to a first control signal, and a power-sharing control block configured to generate the control signal in accordance with a plurality of operation command signals.

Abstract: The present invention relates to a power management system comprising at least one power management subsystem. Each power management subsystem comprises a first power module coupled to a first load and comprising at least one first power supply for supplying power to the first load; a second power module coupled to a second load and comprising at least one second power supply, wherein at least one second power supply is retractably installed in the second power module and selectively coupled to the second load; and a pass-through module comprising at least one pass-through unit retractably installed in the second power module to replace with the at least one second power supply and selectively connecting the first power module to the second load for allowing the first power module to supply power to the second load.

Abstract: The invention relates to a system for the dynamic regulation of a regenerative energy generation installation comprising a plurality of energy generation units. Said system has a signal input for receiving a pre-determined set value, a measuring device for measuring an actual value on an output of the energy generation installation, and a regulating device for regulating the energy generation units based on the set value and the measured actual value.

Abstract: Methods, apparatus, and products for dynamically configuring current sharing and fault monitoring in redundant power supply modules for components of an electrically powered system, including summing, by a master service processor, during powered operation of the system, the present power requirements of components presently installed in the electrically powered system and setting, by the master service processor for each redundant power supply module in dependence upon the sum of the present power requirements, a current sharing tolerance and a fault reporting tolerance.

Abstract: An arrangement having DC power supply units connection parallel, wherein, the power supplies of the DC power supply units each generate a partial output current for supplying a load with a total output current. In accordance with the invention, an overload of power supply units when the power supply units are switched on and/or during their restart is largely avoided.

Abstract: Methods, apparatus, and products for dynamically configuring current sharing and fault monitoring in redundant power supply modules for components of an electrically powered system, including summing, by a master service processor, during powered operation of the system, the present power requirements of components presently installed in the electrically powered system and setting, by the master service processor for each redundant power supply module in dependence upon the sum of the present power requirements, a current sharing tolerance and a fault reporting tolerance.

Abstract: A multi-rail power-supply system provides power to circuitry requiring at least one additional rail between a high and a low-voltage rail. The system comprises a first power regulator that interconnects the high-voltage rail and an intermediate node and sets a first voltage rail that has a magnitude that is less than the high-voltage rail, wherein current that flows from the high-voltage rail is employed by a first set of peripheral circuitry prior to sinking through the first power regulator to the intermediate node. The system further comprises a second power regulator that interconnects the intermediate node and the low-voltage rail and sets a second voltage rail that has a magnitude that is greater than the low-voltage rail, wherein current that flows from the intermediate node is sourced by the second regulator and is employed by a second set of peripheral circuitry prior to flowing to the low-voltage rail.

Abstract: A dual-energy storage system is described, having two energy sources: (a) a fast-energy storage device (FES) such as an ultracapacitor, and (b) a long duration or steady power device, such as a fuel-cell or battery. A power converter or controller executes an energy management algorithm to determine when to provide bursts of additional power/current from the fast-energy storage device, and when to recharge the fast-energy storage device.

Abstract: An energy transfer circuit for connecting a load to multiple energy sources that can have different voltages. The energy transfer circuit connects the load and at least two energy sources, and has a control unit. The energy transfer circuit can transfer energy from at least one energy source to the load in response to the load's power demand; transfer energy from the load to at least one energy source in response to the load's charging current, and transfer energy between the energy sources. The energy transfer circuit also includes a first capacitor in parallel with the primary source and the load; a second capacitor in parallel with the secondary source, an inductor, a first switch between the inductor and the first capacitor, a second switch between the inductor and the second capacitor. The control unit opens and closes the first and second switches in response to the load and sources.

Abstract: A method and system of active power reserve regulation in a wind farm with a communication network having a plurality of wind turbines that provide an active power reserve in order to support eventual power grid contingencies and to deliver an increase of power in case it is needed.

Abstract: A power supply system includes a power supply, a daughterboard, and a motherboard. Output currents of power connectors of the motherboard and impedances of copper foils between every two adjacent power connectors of the motherboard are obtained via simulation. A voltage of one power connector of the motherboard is predetermined. Therefore, desired impedances of copper foils between VRM connectors and corresponding power connectors on the daughter board are determined via calculations, to make currents passing through the power connectors of the motherboard equal to each other.

Abstract: An apparatus and system for preventing branch circuit current overload in a non-dedicated branch circuit where current is supplied at least in part by a co-generation power system through an electrical receptacle or outlet. Co-generation systems of this type are typically used in residential applications and can include solar photovoltaic systems and wind turbines. The apparatus modulates or adjusts the current flowing into the branch circuit from the co-generation power system so that the apparatus does not cause the combination of current supplied from the utility power grid into the branch circuit and current supplied by the co-generation system into the branch circuit outlet to exceed the branch circuit current capacity.