Abstract: A method and circuits for improving the inductive DC converter delivery of regulated current into the load(s), where the inductive DC converter provides the output voltage to an ensemble consisting of the load(s) and a current source or a current source circuit connected in series with the load. The load current is controlled by the current source or the current source circuit in series with the load and not by the inductive DC converter, which only provides the voltage and power required at the output, without directly controlling the load current. The inductive DC converter can operate under much more relaxed specs, while the load current regulation is much tighter, being current source controlled.

Abstract: A method and system for monitoring and controlling a power distribution system is provided. The system includes a plurality of circuit breakers and a plurality of node electronic units. Each node electronic unit is mounted remotely from an associated circuit breaker that is electrically coupled with one of the node electronic units. The system also includes a first digital network, and a first central control unit. The first central control unit and the plurality of node electronic units are communicatively coupled to the first digital network. The method includes receiving digital signals from each node electronic unit at the central control unit, determining an operational state of the power distribution system from the digital signal, and transmitting digital signals to the plurality of node electronic units such that the circuit breakers are operable from the first central control unit.

Abstract: A system includes an output terminal at which power is provided to a load, wherein the load defines a load current. A respective power supply can be coupled to each of a plurality of input terminals for providing current to the load. Each of a plurality of gate modulated diodes is connected between the output terminal and a respective input terminal. Each gate modulated diode has a forward voltage drop that is controllable by a voltage signal applied to a gate of the gate modulated diode. Control circuitry is operable to apply the voltage signal at the gate of each gate modulated diode to control the respective forward voltage drop so that each power supply provides a substantially equal amount of current to the load.

Abstract: There is provided a power source apparatus that includes a master circuit and a slave circuit provided in parallel and outputs an electric current that adds an electric current output from the master circuit and an electric current output from the slave circuit as a power-supply current. The master circuit includes: a main circuit side output section operable to output an electric current depending on a given voltage; a main circuit side reference power source operable to generate a reference voltage corresponding to a power-supply voltage that the power source apparatus is to output; and a main circuit side control section operable to supply the voltage corresponding to the reference voltage to the main circuit side output section in order to control the current output from the main circuit side output section.

Abstract: Methods and systems of providing power to a central processing unit (CPU) provide for enhanced surge protection and increased battery life. In one approach, an integrated circuit as a power output stage with an output node, and a voltage regulator coupled to the power output stage. The voltage regulator selectively switches the power output stage into a current ramp down mode based on detection of a voltage surge at the output node. The power output stage has an associated current ramp down rate. The CPU is coupled to the output node and a surge notification input of the power output stage, where the power output stage accelerates the current ramp down based on a notification signal from the CPU.

Abstract: An emergent power supply system capable of automatically balancing the input currents of a multiplicity of backup power supply modules therein is addressed.

Abstract: A system may include a plurality of loads, a plurality of power supplies adapted to provide power to the loads, and control logic coupled to the power supplies. The control logic may determine whether output current from at least one of the power supplies to a load is below a lower threshold and, if so, may cause at least one of the power supplies to be disabled.

Abstract: Apparatus and methods for transmitting power over non-adjacent multiple conducting pairs and aggregating power from the conducting pairs to power a remote electronic device. In an embodiment, the apparatus and method comprises a wiring closet which has power supplying capabilities for providing power to a plurality of conducting pairs. A remote termination is adapted to aggregate power provided to and transmitted by two or more non-adjacent conducting pairs. The aggregated power is supplied to a remote electronic device. Preferably, a plurality of power circuits provide power to the conducting pairs. Preferably one or more rectifier circuits aggregate power from the non-adjacent pairs to the remote electronic device.

Abstract: A switch control circuit of an auto laser power control circuit is disclosed. The auto laser power control circuit has a feedback circuit and a switch control circuit. The switch control circuit has a first electronic switch, a second electronic switch, a third electronic switch, a fourth electronic switch, and a resistor. When a first control signal is enabled, the first electronic switch and the third electronic switch conduct and the second electronic switch and the fourth electronic switch are turned off. The signal of the feedback amplifying circuit is received by the driving circuit for driving a laser diode. When the first control signal is disabled, the second electronic switch and the fourth electronic switch conduct while the first and the third electronic switches are turned off. Via the voltage formed across the resistor in the driving circuit, the driving circuit is disabled, and the laser diode is completely turned off.

Abstract: A remote assembly is provided. The remote assembly includes multiple line powered remote units, an input power sharing circuit adapted to receive power from each of the multiple line powered remote units and provide a variable output voltage to power auxiliary equipment and a control circuit coupled to the input power sharing circuit, wherein the control circuit is adapted to control the variable output voltage.

Abstract: Apparatus built-in backup power supply system has a “peak cut” function for sharing a part of the load current at the time of a peak load using a secondary battery. For this purpose, a two-way DC—DC converter 5 and the secondary battery 4 are installed on the DC output side of the AC-DC converter 3, and that portion of the load current that exceeds a predetermined peak cut level is discharged from the secondary battery 4 during peak loading. When the load is less than the predetermined cut level, the secondary battery 4 is charged from the AC-DC converter 3 via the two-way DC—DC converter 5. A suitable peak cut level is determined according to the state of charge of the secondary battery and load pattern, and is changed dynamically.

Abstract: A current sharing circuit provides redundant power supplies with current sharing through the use of multiple feedback loops and existing circuit diodes to generate shared load current within predefined load voltage regulation requirements. A method of sharing current allows adjustment of the feedback loops to accommodate characteristics of the circuit.

Abstract: A power supply system, a circuit board, and a computer, as well as a method of providing power to a circuit element are disclosed. The power supply system may include two or more voltage sources coupled to a circuit element. The voltage output of one voltage source may be coupled to one portion of a plurality of power and return connection terminals on the circuit element, and the voltage output of another voltage source may be coupled to another portion of the plurality of power and return connection terminals. The method may include selecting the portions of the power and return connection terminals, and connecting voltage sources to the selected portions.

Abstract: A circuit for generating electric power at the moment a D.C. pulsating power is suspended includes an induction device in series with or in parallel with the load for generating the power and supplying it to the load.

Abstract: An input power sharing control circuit is provided. The control circuit includes a plurality of current limiting circuits each circuit adapted to receive power from one of a plurality of independent power sources, a power switching control circuit adapted to receive power from the plurality of independent power sources and provide a variable power output and a load coupled to the output of the power switching control circuit, wherein the value of the load impedance and the value of the voltage of the output power controls the variable power output.

Abstract: A power supply system has redundant regulated power supplies, whose output ports are diode-ORed to an output node. One of the power supplies outputs a regulated output voltage that is sufficient to meet current demand of a load coupled to the output node. Each power supply has an associated monitoring circuit that monitors the voltage drop across its OR-ing diode. The monitoring circuit for a non-dominant power supply controls its operation so that the non-dominant supply provides a reduced current through its diode to the output node that is less than the current demand of the load, but sufficient to forward bias the diode, and thereby enable the non-dominant supply to immediately respond to a load change, such as an interruption in the operation of the dominant power supply.

Abstract: The specification discloses a system and related method for ensuring that power supply units operated in a parallel fashion evenly distribute the load among them. More particularly, the specification discloses a system and related method for correcting current sharing signals produced by each power supply unit for offsets induced by imperfections in the electronic circuitry that produces the current sharing signals.

Abstract: A method of supplying supplemental power from a supplemental power source in addition to that from a primary power source in order to meet power demand of a load, comprising: measuring power flow from the primary power source to the power load; developing an error signal by subtracting a fixed power offset from the actual primary power source power measurement; establishing a gain; creating an input by multiplying the error signal by the gain; creating a supplemental power source power adjustment command based upon the input; and adjusting the power output of the supplemental power source based on the supplemental power source power adjustment command.

Abstract: An energy generation network according to the present disclosure includes energy generating elements organized in a tree structure of superior and inferior system levels, with control systems and a communication network. In a currently preferred embodiment, energy generating elements are turbogenerators as described above. Communications and processing are distributed throughout the systems and sub-systems of energy generating elements. Inferior sub-systems and systems of sub-systems appears as a single unit to the superior system or sub-system level. Thus, the energy generating elements appears as a seamless single energy generating unit. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: A multi channel power supply detector for selecting one of a plurality of power supplies is provided. The supply selector includes a controller, and each channel has a switching device responsive to the controller in series with a current limiting device responsive to the controller.

Abstract: A power distributor in a redundant power supply apparatus employing one or more metal-oxide-semiconductor field effect transistors (MOSFETs). One or more power supplies are connected to a load, each power supply being connected to the load via one or more MOSFETs connected in parallel with each other. The MOSFETs are connected in a reversed direction where the sources are connected to the power supplies and the drains are connected to the load. Each power supply is provided with an associated control circuit which includes a comparator connected to the power supply voltage and to the load voltage, the control circuit generating a gate control voltage for the MOSFETs to turn the MOSFETs on and off and also to provide minor resistive changes via the control circuit that allow dynamic load balancing of each power supply with respect of the load.

Abstract: A control arrangement and method is provided for detecting and responding to disturbances in electrical power systems. In a preferred arrangement, an integration is initiated that is based on a comparison of actual voltage of a source and a reference voltage. When the integration exceeds a predetermined value, the source is considered unreliable. Also in a preferred arrangement, a determination is made as to whether or not the disturbance is a downstream fault condition. For example, this is useful for applications where a transfer is made from a first source to a second source when predetermined disturbances are detected. In this manner, the transfer of the load to a second source is avoided which would continue the supply of the downstream fault. Additionally, the arrangement distinguishes between various degrees of disturbances to permit appropriate response based on the severity and type of disturbance. For example, a first immediate response, i.e.

Abstract: A method and an apparatus for sharing a load current among a plurality of power supply systems. For each of the plurality of power supply systems an output current and at least one variable representing an operational stress factor associated with the power supply system is measured. The current output of at least one of the plurality of power supplies is adjusted as a function of the at least one measured variable that represents the operational stress factor. The apparatus for sharing a load current among a redundant power supply system includes a first power supply system coupled to a second power supply system. The apparatus also includes a balance circuit configured to receive two inputs. A first input represents a current output of the second power supply system and a second input represents the at least one measured variable associated with the first power supply system. The balance circuit is operable to provide feedback to the first power supply system in response to the received inputs.

Abstract: An input power sharing control circuit is provided. The control circuit includes a plurality of current limiting circuits each circuit adapted to receive power from one of a plurality of independent power sources, a power switching control circuit adapted to receive power from the plurality of independent power sources and provide a variable power output and a load coupled to the output of the power switching control circuit, wherein the value of the load impedance and the value of the voltage of the output power controls the variable power output.

Abstract: An apparatus for providing regulated power to a microelectronic device is disclosed. The apparatus includes an array of power regulators that are coupled together and which are configured to provide power to various portions of the microelectronic device. The array includes filters to determine a frequency of power demanded by the device and transistors configured to provide power in the demanded frequency range.

Abstract: A direct duty cycle current sharing controller (42) and a method for controlling the output current of parallel coupled voltage regulator. A current sense amplifier (58) is provided to amplify the output voltage of a current sensor of a voltage regulator. A share bus amplifier (64) is provided to drive the share bus (SHARE) to a voltage representing the highest voltage regulator current of parallel coupled voltage regulators. A share adjust amplifier (68) provides the error voltage directly to the control terminal of a pulse width modulated (PWM) comparator (52). The share adjust amplifier overrides any feedback voltage currently being provided by the PWM controller and takes direct control over the duty cycle of the drive signal. Direct duty cycle current share control is provided under all modes of operation, even during modes where the voltage regulator is operating out of regulation, such as during soft start.

Abstract: The storage module comprises a plurality of storage means Ca-Cd for storing electric energy and energy transfer means 2a-2d and Sa-Sd for transferring stored energy among the plurality of storage means Ca-Cd so that the charging voltage Vca-Vcd across each of the storage means Ca-Cd can be kept at a value according to a prescribed ratio.

Abstract: Circuits and methods for controlling load sharing by multiple power supplies are provided. In preferred embodiments, load share controllers utilize multiple voltage control loops to monitor the output voltages that are being provided by multiple power supplies connected to a load. These voltage control loops each generate a voltage control voltage that is proportional to the difference between the actual output voltage of the corresponding power supply and the desired output voltage. The voltage control loop with the highest voltage control voltage then controls a current control voltage generated in a current control loop for each power supply via a share bus. These current control loops then regulate the current provided by the corresponding power supplies so that those currents are all proportional to the voltage on the share bus.

Abstract: The process provides constant electric power from a combination of a wind energy generator and a firm secondary generator. The wind energy generator and the secondary generator supply electricity directly to a utility transmission system. The secondary generator must be able to provide power on demand that will meet a utility's needs. The secondary generator is preferably a natural gas turbine, but may be a hydrogen fuel cell, a diesel internal combustion engine, or any other similar technology.

Abstract: There are provided a plurality of power supply units which supply power to a load. The power supply units are started one after other. Starting status of each of the power supply unit is monitored. When all of the power supply units have been started, power from all the power supply units is simultaneously supplied to a load.

Abstract: The circuit comprises a plurality of supply modules for delivering current to a common load. Each supply module is equipped with a driving circuit for controlling the current delivered by the module. The supply modules are connected together by a share bus on which a signal is present for balancing the current delivered by each supply module, in such as way as to control and reduce the difference between the current delivered by a dominant supply module and the current delivered by the remaining supply modules of the circuit. Associated to each supply module are means for generating a PWM signal, the duration of which is proportional to the current delivered by the respective supply module. In addition, each supply module is connected to the share bus in such a way that on the latter there is present a digital share signal, which is a function of the digital PWM signal generated by the dominant supply module.

Abstract: A power supply system has redundant regulated power supplies, whose output ports are diode-ORed to an output node. One of the power supplies outputs a regulated output voltage that is sufficient to meet current demand of a load coupled to the output node. Each power supply has an associated monitoring circuit that monitors the voltage drop across its OR-ing diode. The monitoring circuit for a non-dominant power supply controls its operation so that the non-dominant supply provides a reduced current through its diode to the output node that is less than the current demand of the load, but sufficient to forward bias the diode, and thereby enable the non-dominant supply to immediately respond to a load change, such as an interruption in the operation of the dominant power supply.

Abstract: A first battery 12 is for supply of power at a first voltage. A second battery 13 is for supply of power at a second voltage to a load 14. A converter 120 is between the first battery 12 and the second battery 13. The converter 120 is for conversion of power between the first voltage and the second voltage in magnitude. A controller 110 is for operation of the converter 120 in dependent on a first current in magnitude through the load 14 and a second current in magnitude at an output terminal of the second battery 13.

Abstract: A method and an apparatus for sharing a load current among a plurality of power supply systems. For each of the plurality of power supply systems an output current and at least one variable representing an operational stress factor associated with the power supply system is measured. The current output of at least one of the plurality of power supplies is adjusted as a function of the at least one measured variable that represents the operational stress factor. The apparatus for sharing a load current among a redundant power supply system includes a first power supply system coupled to a second power supply system. The apparatus also includes a balance circuit configured to receive two inputs. A first input represents a current output of the second power supply system and a second input represents the at least one measured variable associated with the first power supply system. The balance circuit is operable to provide feedback to the first power supply system in response to the received inputs.

Abstract: A power distributing mechanism includes a regulating circuit disposed between at least two circuit portions. The regulating circuit includes bifilar-wound windings electrically coupled to the circuit portions. In a first embodiment, the two circuit portions withdraw power from two separate power sources. The regulating circuit, in response to power withdrawn from the power sources passing through the circuit portions, proportionally allocates the withdrawn power between the circuit portions. In a second embodiment, the two circuits portions withdraw power from a single power source. The two circuit portions serve as redundant reliability backup to each other. In the event of circuit failure in one of the circuit portions, the regulating circuit in response to the failure proportionally allocates power to the remaining functioning circuit portion.

Abstract: A method and system for connecting a plurality of power generators, each having an electrical power converter output and adjustable output voltage magnitude and frequency, with at least one digital communications bus to provide synchronization and load sharing. One of the plurality of power generators is designated a master unit and the remainder are designated as slave units.

Abstract: Circuits and methods for controlling load sharing by multiple power supplies are provided. In preferred embodiments, load share controllers utilize multiple voltage control loops to monitor the output voltages that are being provided by multiple power supplies connected to a load. These voltage control loops each generate a voltage control voltage that is proportional to the difference between the actual output voltage of the corresponding power supply and the desired output voltage. The voltage control loop with the highest voltage control voltage then controls a current control voltage generated in a current control loop for each power supply via a share bus. These current control loops then regulate the current provided by the corresponding power supplies so that those currents are all proportional to the voltage on the share bus.

Abstract: Circuits and methods for controlling load sharing by multiple power supplies are provided. In preferred embodiments, load share controllers utilize multiple voltage control loops to monitor the output voltages that are being provided by multiple power supplies connected to a load. These voltage control loops each generate a voltage control voltage that is proportional to the difference between the actual output voltage of the corresponding power supply and the desired output voltage. The voltage control loop with the highest voltage control voltage then controls a current control voltage generated in a current control loop for each power supply via a share bus. These current control loops then regulate the current provided by the corresponding power supplies so that those currents are all proportional to the voltage on the share bus.

Abstract: A power sharing apparatus and method. In one embodiment, a method of sharing power includes switchably coupling and decoupling each of a plurality of power sources to deliver at least a portion of power to a shared power supply. Each of the power sources corresponds to one of a plurality of applications. The method also includes adjusting the portion of power delivered by each one of the power sources to the shared power supply responsive to an amount of usage by the application corresponding to the respective power source.

Abstract: An auxiliary power supply system serves as a consumer's primary power source during selected times and power outages in order to provide the consumer with a continuous supply of AC voltage. A power supply has a rechargeable DC source coupled to an inverter/charger circuit. A first switching means has an input port coupled to an AC voltage source and has an output port. The first switching means, programmable with at least one selected time period, couples the AC voltage source to the output port during a non-selected time period that is different than the selected time period and uncouples the AC voltage source from the output port during the selected time period. A second switching means is coupled to the output port and has a switch coupled between the output port and the inverter/charger circuit. The switch is selectively placed in one of a first position when a normal AC voltage is sensed and a second position when an inadequate AC voltage is sensed.

Abstract: A system and method for developing a cost efficient electronic power supply system that handles a range of supported electronic circuits is provided. The electronic power supply system adaptively configures the power applied to electronic circuits. Thereby, eliminating redesign of a power supply system when a newly developed or different electronic circuit is implemented. When an electronic circuit is attached to the electronic power supply, a controller confirms electronic circuit presence and queries for electronic circuit power on requirements. As more electronic circuits are added, the controller examines each electronic circuit power on requirements and determines if a power conflict is present. If a conflict exists, the controller will not supply power to the electronic circuits until the conflict is resolved.

Abstract: A powering arrangement for an undersea cable system provides that each branch of the system is supplied with a current equal to half of the current in the trunk. By coupling both branches to the trunk, the current adds at the branching unit. Upon occurrence of a power path fault in any branch, a virtual ground moves to the site of the fault. In addition, an image virtual ground moves to a similar point in the branch that does not have the cable fault. As a result of this implementation, the cable power system is able to tolerate at least one fault in a branch without necessitating repair, and can tolerate some multiple branch faults depending upon their location. In contrast to the operation of existing power-switched branching units, the fault-tolerant branching unit does not require down-powering and re-powering in order in order to change the power configuration, e.g., to allow a virtual ground to be re-located at shunt fault sites that occur in either trunk or branches.

Abstract: A power distribution system delivers power onto a regulated bus to a load from a plurality of individual indivisible DC power source devices and or DC energy storage devices each having a respective regulator for coupling the devices onto the bus. Respective storage device chargers for the DC energy storage devices enable charging of the DC energy storage devices when the DC power source devices provide power in excess of the demands of the load. The respective regulators and chargers continue to provide sufficient coupled power onto the bus even in the event of a failure of one or more of the devices thereby enabling graceful degradation of power delivery to the load for improved reliably of the power delivery.

Abstract: Presented is a modular uninterruptible power supply system utilizing common power modules, and providing redundant coordinated control thereof. The system and method of the instant invention provides identical control logic within each of the individual power modules, thus dispensing with the requirement for a separate control module to control and coordinate the operating modes and parameters of the UPS system. A system is presented whereby a virtual master is established through an arbitration scheme at initialization of the UPS system. The master then assigns a virtual vice master to provide the redundant back up control should the virtual master no longer be able to perform its functions. Nearly simultaneous control of operational mode and state change functions is accomplished through a coordinated communications system including a high-speed communications bus and digital control logic lines.

Abstract: A system and method for developing a cost efficient electronic power supply system that handles a range of supported electronic circuits is provided. The electronic power supply system adaptively configures the power applied to electronic circuits. Thereby, eliminating redesign of a power supply system when a newly developed or different electronic circuit is implemented. When an electronic circuit is attached to the electronic power supply, a controller confirms electronic circuit presence and queries for electronic circuit power on requirements. As more electronic circuits are added, the controller examines each electronic circuit power on requirements and determines if a power conflict is present. If a conflict exists, the controller will not supply power to the electronic circuits until the conflict is resolved.

Abstract: An OR circuit allowing one stable output voltage from a plurality of input voltages is disclosed. A first FET is connected between a corresponding input terminal and an output terminal in such a manner that an inherent diode of the FET is connected in a forward direction. A second FET is connected between a corresponding input terminal and the output terminal in the same manner as the first FET. Each of the input voltages is compared with the output voltage. The conduction/non-conduction states of each of the first and second FETs are independently controlled depending on the comparison result.

Abstract: An expandable hybrid electric generator (20) includes a number of power blocks (22) that may be nearly identical to one another. The power blocks (22) are controlled by a master controller (34), and an external supervisor (30) performs some master controller (34) functions should the master controller (34) fault. The power blocks (22) each include a battery bank (42) and an inverter/charger (44), both of which couple to a DC bus (40). The inverter (44) and an AC generator (50) couple to an AC bus (24). The DC busses (40) of the power blocks (22) remain independent of one another, but all power blocks (22) couple together at the AC bus (24). The master controller (34) issues instructions to the inverters (44) that maintain approximately equal states at the independent DC busses (40) of the power blocks (22).

Abstract: A power distributing mechanism includes a regulating circuit disposed between at least two circuit portions. The regulating circuit includes bifilar-wound windings electrically coupled to the circuit portions. In a first embodiment, the two circuit portions withdraw power from two separate power sources. The regulating circuit, in response to power withdrawn from the power sources passing through the circuit portions, proportionally allocates the withdrawn power between the circuit portions. In a second embodiment, the two circuits portions withdraw power from a single power source. The two circuit portions serve as redundant reliability backup to each other. In the event of circuit failure in one of the circuit portions, the regulating circuit in response to the failure proportionally allocates power to the remaining functioning circuit portion.

Abstract: A data line pair and a strobe line pair are provided between first and second chips to exchange data therebetween. The first chip includes an output circuit and a controller for controlling the output circuit. The second chip includes an input circuit. For example, the output circuit supplies a direct current from a power supply to one of the data lines. Then, the input circuit feeds back the received current to the output circuit through a pair of terminal resistors and the other data line. Subsequently, the output circuit supplies the fed back direct current to one of the strobe lines. In response, the input circuit feeds back the received current again to the output circuit through another pair of terminal resistors and the other strobe line. And then the fed back current is drained to the ground. Thus, compared to driving the data and strobe line pairs separately with the same amount of current supplied, the current dissipation can be halved.

Abstract: The monitoring of regulated redundant power supplies is enhanced by returning to each power supply a feedback (sensed) voltage signal that is indicative of the voltage level that the respective power supply is outputting and the voltage level supplied to a system load. In one embodiment, a feedback signal that is supplied to a power supply as the sensed signal is derived using a voltage divider network across the output of the power supply and a common connection at which the outputs of the power supplies are “Ored” for delivery to the system load. In this way, each power supply regulates its output voltage as a function of the level of the feedback signal and the level of a respective preset signal.