Abstract: An electronic device may include a connector port that accommodates reversible connector plugs. The connector port may include protection circuitry that protects other components in the electronic device from undesired power supply voltages. The protection circuitry may form a first branch and a second branch opposite to the first branch. The protection circuitry may receive control signals from power polarity detection circuitry. The power polarity detection circuitry may detect the presence of power supply voltages at the first branch and the second branch. In response to detecting the presence of a power supply voltage at a given branch, the power polarity detection circuitry may disable a power supply signal path through the opposite branch and enable a power supply signal path through the given branch.

Abstract: An aircraft power management system includes an electrical power supply input configured to be coupled to an electrical power supply, a first power supply bus bar coupled to the power supply input, at least one primary electrical equipment including a primary load coupled in parallel to the first power supply bus bar, a bus bar switch configured to selectively deactivate the first power supply bus bar downstream of the at least one primary electrical equipment, a load monitoring device configured to monitor the power demand of the primary load and to output a deactivation signal to the bus bar switch for selectively deactivating the first power supply bus bar, if the monitored power demand of the primary load exceeds a primary threshold, and at least one tertiary electrical equipment including a tertiary load coupled to the first power supply bus bar downstream of the at least one primary electrical equipment.

Abstract: Systems and methods for power balancing in power distribution networks are disclosed herein. According to an aspect, a method may be implemented at a power manager in a power distribution network including multiple computing devices. The method may include receiving vital product data associated with the computing devices. The method may also include predicting, based on the vital product data, occurrences of unbalanced power in the power distribution system upon distribution of power to the computing devices. Further, the method may include controlling application of power to the computing devices, prior to distributing power in the power distribution system, based on the predicted occurrences such that power distribution to the power distribution system is substantially balanced.

Abstract: An SNMP network comprises a power manager with an SNMP agent in TCP/IP communication over a network with an SNMP network manager. The power manager is connected to control several intelligent power modules each able to independently control the power on/off status of several network appliances. Power-on and load sensors within each intelligent power module are able to report the power status of each network appliance to the SNMP network manager with MIB variables in response to GET commands. Each intelligent power module is equipped with an output that is connected to cause an interrupt signal to the network appliance being controlled. The SNMP network manager is able to test which network appliance is actually responding before any cycling of the power to the corresponding appliance is tried.

Abstract: A power transmitting apparatus which can be driven by a battery and transmits power to one or more power receiving apparatuses acquires, from each of one or more power receiving apparatuses, information for identifying the power receiving apparatus, and decides the amount of transmission power for each of one or more power receiving apparatuses based on the remaining capacity of the battery and the sum of the allowable amounts of transmission power determined for each of one or more power receiving apparatuses based on the information. The power transmitting apparatus transmits power to one or more power receiving apparatuses in accordance with the decided power amount.

Abstract: The invention relates to a method for controlling a feed arrangement having a wind energy installation for feeding electrical power into an electrical supply system, comprising the following steps: generating electrical power using the wind energy installation from wind, feeding a first proportion of the generated electrical power into the electrical supply system, supplying a second proportion of the generated electrical power to an electrical consumer for consuming the supplied second proportion of the generated electrical power, and wherein, depending on at least one monitored system state and/or depending on the prevailing wind, the second proportion of the generated electrical power which is supplied to the consumer is reduced wholly or partially and the first proportion of the electrical power fed into the electrical supply system is increased correspondingly, and to a corresponding feed arrangement.

Abstract: A power supply, comprising a constant-current power supply, and at least two current-limiting protection branches (I1, . . . , In) connected in parallel on the output loop of the constant-current power supply, the current limiting protection branches comprising at least one load (L1, . . . , Lnn) and current-limiting protector (l0, . . . , ln), and the designed current limiting value of the current-limiting protector in each branch being greater than the designed working current value of the current-limiting protection branch where the current-limiting protector is located.

Abstract: An arrangement which includes two or more energy storage units for electrical energy connected in series, and two or more balancing resistor units. Each balancing resistor unit is connected in parallel with one of the energy storage units. The arrangement also includes means for determining a voltage over all of the series-connected energy storage units and means for determining the energy storage unit voltages between poles of the energy storage units. One or more of the balancing resistor units include a base resistor unit and a control resistor unit connected in series and a switching device connected in parallel with the control resistor units.

Abstract: A vehicle air conditioning system includes an electric powered refrigerant compressing device, an evaporator, an electric heater, an air temperature determining component, a cabin interior temperature controlling component, an upper limit electric power setting component, and an electric power distribution controller. The evaporator receives refrigerant from the compressing device. The heater is downstream of the evaporator in an air passageway. The determining component determines a first air temperature upstream of the evaporator and a second air temperature between the evaporator and the heater. The controlling component sets a vehicle interior discharge air temperature at a position downstream of the heater to a target temperature. The power setting component sets an upper limit for power supplied to the compressing device and the heater.

Abstract: The present invention is through the power control unit, which is connected with the voltage-dividing load in parallel, to perform shunt regulation for the current passing through the voltage-dividing load; in which the methods of the shunt regulation by the power control unit includes using the power control unit to perform shunt regulation of PWM, shunt regulation of conductive phase angle, or shunt regulation of switch type turn-on or cut-off, or regulating the impedance of the power control unit.

Abstract: A turbine farm comprises a plurality of individual turbines each having an auxiliary component circuit. The farm further comprises; a master transformer arranged to be coupled between each of the plurality of individual turbines and an electrical grid and an auxiliary transformer coupled between the sub-station transformer and the auxiliary component circuit in each of the individual turbines. When in use power is transmitted from the sub-station transformer back to each auxiliary component circuit.

Abstract: A method for controlling a supply current for a circuit includes setting a target value of a quantity related to a supply current, said target value being different from a presently established value of the quantity, and adjusting the quantity until a value of the quantity corresponds to the target value. A method for controlling a supply current to a plurality of circuit blocks includes providing a plurality of partial supply currents to the plurality of circuit blocks, setting at least one target value of a quantity related to at least one of the partial supply currents, checking whether a predetermined condition which depends on the at least one set target value is achieved, and if the predetermined condition is not achieved, changing at least one among the at least one target values and the at least one partial supply currents to achieve the predetermined condition.

Abstract: A motor control device includes a DC motor, a power source configured to supply power to each of the DC motor and a load unit, and a controller configured to control power supply to the DC motor and the load unit. When reducing the power to be supplied to the DC motor, the controller increases the power to be supplied to the load unit during a predetermined period of time including a timing at which the power to be supplied to the DC motor is reduced.

Abstract: A system has a power source connected to power access points and at least one environmental control system. A threshold compare device is effective to compare the proportional load on the environmental control systems to a preset threshold. If the threshold is exceeded, unused power access points are disabled. This prevents such access points from placing additional loads on the environmental control systems. Conversely, when the proportional load on the environmental control systems drops below a preset threshold, power can be restored to the disabled power access points. A master control unit can monitor the load on the environmental control systems and either or both the environmental conditions in environment zones or the power loading of the power access points and determine whether to disable unused power outlets.

Abstract: The present invention relates to a multi-output current-balancing circuit, which in one embodiment can include: (i) a transformer having a primary winding and a plurality of secondary windings, where the primary winding receives an AC input current; (ii) a plurality of first and second rectifier circuits and a plurality of first current balancing components, where each of the first and second rectifier circuits and the first current balancing components is coupled to a corresponding secondary winding, where each the first current balancing component is configured for current balancing between each of the first and second rectifier circuits of the corresponding secondary winding; and (iii) at least one second current balancing component, where each second current balancing component is coupled to a pair of the second rectifier circuits that correspond to different secondary windings, where the second current balancing components are configured for current balancing between different the secondary windings.

Abstract: A multiple outlet sequenced power strip with only a specific number of outlets capable of running at any one time which is comprised of at least: a housing, input and output outlets, and a form of variable motor; thus allowing for the possible use of multiple high power devices on one wall socket and subsequently breaker.

Abstract: A demand response management system which may be implemented with demand response logic. The system may be used by utilities, independent system operators, intermediaries and others to manage operations of demand response programs relative to customers, clients, participants, and users of outputs from the utilities, independent system operators, and the like. Demand response logic of the demand response management system may provide demand signal propagation and generation from demand response events.

Abstract: A system and method for charging a plug-in electric vehicle with an external power source, even when the overall power requested by the plug-in electric vehicle exceeds the overall power available from the external power source. In an exemplary embodiment, a method determines the overall power requested by one or more vehicle systems, and then compares that to the overall available power from the external power source. If the overall requested power exceeds the overall available power, then the power from the external power source is allocated or apportioned to the different vehicle systems according to an allocation process that may consider factors like predetermined priorities and current vehicle conditions.

Abstract: A method and system for controlling load in a utility distribution network are provided that initiates a shed event for a node in the distribution network by selecting premisess associated with the node that are participating in a demand response program to reduce the load at the node to desired levels. More specifically, the system and method provide for selecting only enough participating premisess associated with the node that are necessary to reduce the load to desired levels.

Abstract: A circuit breaker comprising first and second JFETs, each comprising a gate, drain and source connection, the JFETs sources being operatively connected to each other to form a common-source connection and adapted to be connected to and operating to open an external circuit when the current flowing through the JFETs exceeds a predetermined threshold, the JFETs' gates, and common-source connection being operatively connected to a gate driver circuit which causes the JFETs to turn off when the predetermined threshold is exceeded; whereupon the current flows through the common-source connection into the second gate and into the gate driver circuit which causes the gate driver circuit to turn off the first and second JFETs and open the circuit breaker. Also claimed is a method of sensing an overloaded circuit comprising leading and trailing JFETs in a circuit that open the circuit and prevent current flow when a predetermined threshold is exceeded.

Abstract: An exemplary power supply module for distribution automation includes a manner of connecting an input power source to a power supply module and connecting an output of the power supply module to external devices, a manner of regulating, a rectification module generating output DC voltage, a transformer having a primary side connected with the regulating component and one or more power input power sources, and a secondary side connected to the rectification module, a manner of voltage feedback means for providing a voltage feedback signal to the regulating component to regulate the output DC voltage, and a load share control module having a load share signal for controlling load sharing for the power supply module. The power supply module includes a filter amplifier for conditioning the voltage feedback signal, where the filter amplifier is connected in the secondary side of the transformer for reducing noise in the power supply module.

Abstract: An SAS domain map is automatically generated at an SAS concentrator switch by a virtual mapping device that presents itself as a target for discovery by SAS devices interfaced with the concentrator, such as information handling systems and storage devices. During the SAS protocol discovery process, the virtual mapping device generates the SAS domain map by acquiring the device name and the device port for each concentrator port that interfaces with a device. A management application running on the concentrator applies the SAS domain map to provide network functions, such as zoning or diagnostics.

Abstract: A sub-sea power transmission/distribution network includes a plurality of standard proven power converter building blocks on each of the power source side and the sub-sea load side. The power source side converters and the sub-sea load side converters are each configured to provide a modular stacked dc (MSDC) converter architecture. The power source side converters are further configured to share the load equally or in proportion to their individual power ratings. The configurations are based on corresponding droop curves representative of MSDC link current magnitude data and average output voltage data of the power source side converters.

Abstract: A power limiting control system includes at least one power generator configured to provide power to a plurality of tools on a drilling rig; and a power limiting controller configured to control the provision of power from the power generator to the plurality of tools. The power limiting controller is adapted to perform a method including determining an individual power consumption for each of the plurality of tools; calculating a total power consumption from each respective individual power consumption of the plurality of tools; comparing the total power consumption of the plurality of tools to a total available power; ranking each respective individual power consumption by load size; and reducing power consumption of at least one of the plurality of tools based on rank when the total power consumption exceeds the total available power.

Abstract: High density uninterruptible power supplies are provided including an enclosure and at least one uninterruptible power supply positioned in the enclosure. A battery associated with the at least one uninterruptible power supply is positioned in the enclosure. The at least one uninterruptible power supply and the associated battery are configured to provide at least thirty seconds of backup power to a load connected thereto. Related systems and power distribution units are also provided.

Abstract: There is provided a power transmitting apparatus including a power transmission side communication unit for communicating with a power receiving apparatus, a power transmission unit for transmitting power to the power receiving apparatus in a non-contact manner, a transmission power information deriving unit for increasing discretely a first transmission power to transmit from the power transmission unit to the power receiving apparatus, and deriving information related to power transmission for determining a second transmission power corresponding to power desired by the power receiving apparatus based on reception of received power information transmitted from the power receiving apparatus at the power transmission side communication unit, indicating that a received power level meet a predetermined level, and a transmission power determining unit for determining the second transmission power to transmit to the power receiving apparatus based on information related to power transmission derived by the transm

Abstract: A user of an automobile interactive onboard computer display monitors and controls battery power distribution during discharge. The user is enabled to interactively enter into a computer controlled display, proportions of the total battery power to be distributed to each of a set of devices. The distribution of the battery power to each of the devices is then monitored. The distribution of power to a specific device is halted when the power distributed to the specific device reaches the maximum of the proportion of the entered battery power to be distributed to the specific device.

Abstract: An SNMP network comprises a power manager with an SNMP agent in TCP/IP communication over a network with an SNMP network manager. The power manager is connected to control several intelligent power modules each able to independently control the power on/off status of several network appliances. Power-on and load sensors within each intelligent power module are able to report the power status of each network appliance to the SNMP network manager with MIB variables in response to GET commands. Each intelligent power module is equipped with an output that is connected to cause an interrupt signal to the network appliance being controlled. The SNMP network manager is able to test which network appliance is actually responding before any cycling of the power to the corresponding appliance is tried.

Abstract: A power management device can include a power management device housing, a power input associated with the power management device housing, and a plurality of power outputs associated with the power management device housing. At least certain power outputs can be connectable to one or more electrical loads external to the power management device housing and to the power input. In some embodiments, a communications bus can be associated with the power management device housing and one or more power control sections can also be associated with the power management device housing. In some embodiments, one or more power control sections can communicate with the communications bus and with one or more corresponding power outputs among the plurality of power outputs. In some embodiments, a power information display can communicate with the communications bus.

Abstract: A vertical-mount network remote power management outlet strip embodiment of the present invention comprises a long, thin outlet strip body with several independently controllable power outlet sockets distributed along its length. A power input cord is provided at one end, and this supplies AC-operating power to relays associated with each of the power outlet sockets. The relays are each addressably controlled by a microprocessor connected to an internal I2C-bus serial communications channel. The power-on status of each relay output to the power outlet sockets is sensed and communicated back on the internal I2C-bus. A device-networking communications processor with an embedded operating system translates messages, status, and controls between the internal I2C-bus and an Ethernet port, and other external networks.

Abstract: A battery charging circuit comprising: a semiconductor switch having an output connected to a rechargeable battery; a battery charge controller for receiving power from an external source, and supplying output power to a portable device and the input of the semiconductor switch, the current output of the battery charge controller being controllable; and a voltage sensing circuit for: measuring the voltage drop across the battery charge controller; and responding to the voltage drop across the battery charge controller by modulating the semiconductor switch to reduce the quantity of current supplied to the rechargeable battery when the voltage drop is too great; whereby the total power dissipated by the battery charge controller is controlled, the portable device receiving the power it needs to operate and the rechargeable battery receiving any additional available power.

Abstract: A current balance circuit includes a first and a second current sensors, an averager, a first and a second control modules, and a first and a second rheostat elements. The first and second current sensors receive a first current and a second current from a power source respectively and convert the first and second currents into a first and a second voltages. The averager receives the first and second voltages and calculates to obtain an average voltage. The first and second control modules receive the first voltage, the second voltage, and the average voltage, to obtain a first and a second control signals, to control current conduction ability of the first and second rheostat elements, to make the first and second currents keep a dynamic balance.

Abstract: The present invention relates to a multi-output current-balancing circuit, which in one embodiment can include: (i) a transformer having a primary winding and a plurality of secondary windings, where the primary winding receives an AC input current; (ii) a plurality of first and second rectifier circuits and a plurality of first current balancing components, where each of the first and second rectifier circuits and the first current balancing components is coupled to a corresponding secondary winding, where each the first current balancing component is configured for current balancing between each of the first and second rectifier circuits of the corresponding secondary winding; and (iii) at least one second current balancing component, where each second current balancing component is coupled to a pair of the second rectifier circuits that correspond to different secondary windings, where the second current balancing components are configured for current balancing between different the secondary windings.

Abstract: A network can comprise a power manager with a network agent in communication over a network with a network manager. The power manager can be connected to control several intelligent power modules each able to independently control the power on/off status of several network appliances. Power-on and load sensors within each intelligent power module can report the power status of each network appliance to the network manager with variables in response to commands. Each intelligent power module can be equipped with an output that is connected to cause an interrupt signal to the network appliance being controlled. The network manager can test which network appliance is actually responding before any cycling of the power to the corresponding appliance is tried.

Abstract: A composite power supply includes a plurality of power cluster lines, at least one USB port and at least one DC port formed on a surface of a casing, and the power cluster lines, the USB port and the DC port are electrically connected to a circuit board and the circuit board includes a plug-and-play circuit electrically connected to the USB port and provided for an electronic device to access electric power through the USB port, so as to waive the inconvenience of booting a computer before using the electric power, and the circuit board includes a DC-DC conversion circuit electrically connected to the DC port, and a knob or a multi-stage switch in the DC-DC conversion circuit is provided for adjusting the output voltage of the power ports to improve the convenience of the application significantly.

Abstract: A vertical-mount network remote power management outlet strip embodiment of the present invention comprises a long, thin outlet strip body with several independently controllable power outlet sockets distributed along its length. A power input cord is provided at one end, and this supplies AC-operating power to relays associated with each of the power outlet sockets. The relays are each addressably controlled by a microprocessor connected to an internal I2C-bus serial communications channel. The power-on status of each relay output to the power outlet sockets is sensed and communicated back on the internal I2C-bus. A device-networking communications processor with an embedded operating system translates messages, status, and controls between the internal I2C-bus and an Ethernet port, and other external networks.

Abstract: A method of controlling a plurality of output voltages in a multi-output power supply device for generating a plurality of output powers by using a transformer. The method includes, if a system to which power is supplied from the multi-output power supply device is in a standby mode, blocking any one of at least two output powers of a secondary side of the transformer, wherein the blocked power is supplied to the system; and compensating for a resistance of a feedback circuit connected to a switching controller of a power switch of a primary side of the transformer in relation to one or more unblocked output powers of the transformer and maintaining the output of the unblocked output power to be constant.

Abstract: Apparatus includes a segment loading indicator configured to be electrically coupled to a load segment output of a power supply, such as a UPS, and operative to provide an indication of a loading of the load segment output. For example, the segment loading indicator may be operative to provide an indication of a loading of the load segment output with respect to load rating of the load segment output. A UPS may include a loading indicator is coupled to a power output and operative to provide rear-panel indication of a loading of the power output.

Abstract: Provided is an energy and power management integrated circuit (IC) device. The energy and power management IC device includes a plurality of energy conversion devices for harvesting energy from respective energy conversion sources and converting the energy into electric energy, an energy management IC (EMIC) for converting the electric energy converted by the energy conversion devices into stable energy, a storage device for storing the energy or power converted by the EMIC, a power management IC (PMIC) for receiving and distributing the power stored in the storage device, and a plurality of output load devices for consuming the power distributed by the PMIC. Accordingly, it is possible to harvest energy in an environmentally friendly way and semi-permanently use the energy without changing a battery.

Abstract: The present invention discloses a method for energy management, by means of which significant fluctuations in the power consumption in the on-board electrical system are reduced, in particular, current consumption peaks arising due to a very high start-up current of electrical actuators and solenoid valves, are more evenly distributed over time. To achieve this, the method for energy management according to the invention operates predictively, i.e. it determines both the energy available in the subsequent time interval and the energy required on the basis of activation requests, and selects consumers to be activated according to their priority and a prevailing tolerance time within which a consumer must be activated following the submission of its activation request. The tolerance time is thereby continuously adapted.

Abstract: The appliance control system includes electrical appliances and an appliance control device. The appliance control device includes a control unit configured to, upon receiving an energy conservation instruction indicative of a total reduction amount, send a control signal including common control order indicative of an individual reduction amount of the power consumption of the electrical appliance to at least one of the electrical appliances based on the total reduction amount. Each electrical appliance includes a functional unit having plural operation states with different power consumption, a control instruction storage unit storing plural control instructions for changing the operation state, an individual storage unit storing individual control information indicative of a correspondence relation between the individual reduction amount and the control instruction, and an operation control unit.

Abstract: A method of operating an alternating current (AC) power distribution assembly (PDA), where the ACPDA includes a plurality of AC power distribution modules, each connected to a respective AC load includes turning a first switch off and turning a second switch on in each of the AC power distribution modules; starting up each of the respective AC loads; monitoring a load current in the ACPDA and obtaining an acceptable load current in the ACPDA; determining if a set of motor sensor parameters for the ACPDA are within predetermined limits, and, in the event the motor sensor parameters are within the predetermined limits, determining if a startup period has elapsed; and in the event the startup period has elapsed, turning the first switch on and turning the second switch off in each of the AC power distribution modules.

Abstract: The present invention provides a method and apparatus for allocating current (20) from a distributor (22), having a maximum rated current, among a plurality of load circuits (24), including a variable load circuit (24?) that benefits from a full load current allocation but is operable at a lower current allocation. The invention provides for measuring the instantaneous current reserve of the distributor (22) as the maximum rated current of the distributor (22) less the instantaneous current flowing from the distributor (22) to the plurality of load circuits (24), and limiting the instantaneous current of the variable load circuit (24?) to the full load current of the variable load circuit (24?) if the instantaneous current reserve is greater than zero, and the sum of the full load current of the variable load circuit (24?) plus the instantaneous current reserve, if the instantaneous current reserve is less than or equal to zero.

Abstract: For levelling the partial powers which flow at a grid connection point between a multi-phase AC power grid having a plurality of phase conductors and a unit for feeding electric energy into the AC power grid having a multi-phase inverter as well as electric consumer loads connected to the AC power grid, via the individual phase conductors, differences between the partial powers flowing via the individual phase conductors are determined and are reduced by feeding different partial powers with the inverter into the individual phase conductors.

Abstract: A multi-path constant current driving circuit. In the multi-path constant current driving circuit, a current sharing transformer (T31, T32, T33, T3(n?1)) is provided in power supply circuits which are provided with adjacent rectifier and filter units (Z31, Z32, Z33, Z3n). A first winding of the current sharing transformer (T31, T32, T33, T3(n?1)) is connected between a first terminal of a secondary winding of a first power supply circuit and the rectifier and filter unit (Z31, Z32, Z33, Z3n) of the first power supply circuit. A second winding of the current sharing transformer (T31, T32, T33, T3(n?1)) is connected between a first terminal of a secondary winding of a second power supply circuit and the rectifier and filter unit (Z31, Z32, Z33, Z3n) of the second power supply circuit. In-phase current flows through the dotted terminal of the first winding and the synonym terminal of the second winding of the current sharing transformer (T31, T32, T33, T3(n?1)).

Abstract: A system for an integrated circuit comprising a plurality of power islands includes a first power manager and a second power manager. The first power manager manages a first power consumption for the integrated circuit based on needs and operation of the integrated circuit. The second power manager communicates with the first power manager and manages a second power consumption for one of the power islands.

Abstract: An aircraft electric power supply system (10) for supplying electric power to onboard electric devices (20) during flight. To reduce the devices' power draw, the electric power is supplied via modulation at an increment-percentage that is determined by present conditions. An optimum portfolio can be established for the electrical devices (20) collectively, this portfolio being selected in accordance with an energy-management criterion or other aircraft objectives.

Abstract: A sub-sea power transmission/distribution network includes a plurality of standard proven power converter building blocks on each of the power source side and the sub-sea load side. The power source side converters and the sub-sea load side converters are each configured to provide a modular stacked dc (MSDC) converter architecture. The power source side converters are further configured to share the load equally or in proportion to their individual power ratings. The configurations are based on corresponding droop curves representative of MSDC link current magnitude data and average output voltage data of the power source side converters.

Abstract: A multi-channel PWM signal generating method includes receiving information having a pulse width and outputting a plurality of PWM signals based on the pulse width. The outputting includes outputting at least one pair of PWM signals that have a phase difference corresponding to a difference between an output period and the pulse width.

Abstract: Circuits and methods to charge batteries of a portable device simultaneously with supplying power to the device for its operation, using a power source with limited maximum current, as e.g. an USB port, have been achieved. The system invented relies upon digital control only. No direct sensing of the current required for the operation of the portable device is required. The control takes care that the sum of the charging current and of the current to run the portable device does not exceed the maximum allowable current of the power source. The current required to run the portable device has precedence over the charging current.