Abstract: A wireless controller is provided with at least two power supplies. The internal components of the controller are classified into at least two groups in accordance with the degrees of functional importance or the power consumptions of the components. The power supplies separately supply electric power to the respective groups of the components. Thus, the power supply to components with high degrees of functional importance or low power consumptions is ensured for a long time.

Abstract: According to certain embodiments of the invention, there is provided an arrangement for cooling a series of closely spaced upright computer components mounted to a support, the arrangement including a tray having a plurality of air moving devices such as fans. Members are used for helping mount removably the tray to the support in a generally horizontal disposition, and the air moving devices move air in a generally upright path of travel to help cool the upright computer components. The tray also has a series of connector ports for connecting electrically to outputs from individual ones of the computer components.

Abstract: A method for controlling a vehicular electric system having multiple power sources including an engine-driven generator. The power sources for supplying power to charge an onboard battery are determined based on difference between the power generation cost of each power source and that for generating an amount of power charged in the battery. Furthermore, amounts power to be supplied to the battery 103 for charge is determined based on the amount of power currently charged in the battery.

Abstract: A multiple power sources control system has several power input sides can switch a power source to other power sources of power input sides as original power source of one of power input sides has an abnormal phenomenon (such as no power supply, too low or high voltage and abnormal frequency, etc.) such that loads can keep obtaining supplied power. In addition, power of loads has better protection because of multiple input power supply.

Abstract: A power controller provides a distributed generation power networking system in which bi-directional power converters are used with a common DC bus for permitting compatibility between various energy components. Each power converter operates essentially as a customized bi-directional switching converter configured, under the control of the power controller, to provide an interface for a specific energy component to the DC bus. The power controller controls the way in which each energy component, at any moment, will sink or source power, and the manner in which the DC bus is regulated. In this way, various energy components can be used to supply, store and/or use power in an efficient manner. The various energy components include energy sources, loads, storage devices and combinations thereof.

Abstract: A power and data distribution system for use in combination with a beam-mounted seating structure that includes a series of seat assemblies each mounted to a common support beam. The power and data distribution system includes a wireway that is mounted to the support beam and extends along the entire row of seats. The wireway includes a concealed main electrical conduit that extends along the length of the power and data distribution system. The power and data distribution system includes a series of access housings that extend from the wireway, and each access housing includes a pair of electrical outlets and a pair of data outlets. Each of the electrical outlets is coupled to the main electrical conduit contained in the wireway, while each of the data outlets is connected to a data line also passing through the wireway.

Abstract: A system and method is provided for multiple hosts to control one or more power systems redundantly, by constructing a power supply system having a plurality of physically separate and redundant communication interfaces, one coupled to each host, wherein a software algorithm determines whether the power supply system should be on or off at a given point in time, based on signals received from the hosts. In an exemplary embodiment, a power control system consistent with the invention comprises at least two hosts, each host comprising a host communications interface; and a power supply system comprising a power supply, control software, and a plurality of power supply system communications interfaces.

Abstract: A circuit for fencing input signals to circuits in a voltage island when switching between a normal and a standby power supply is disclosed. A voltage detector detects the switch over in power source and generates a power switch signal. The power switch signal is synchronized to a standby clock and a normal clock. The synchronized standby clock signal is delayed by a counter to allow circuit stabilization. The normal and standby clock signals are logically combined and used to fence input signals to the circuits on the voltage islands.

Abstract: In a co-generated power supply system for performing co-generated power supply to a load Lac/dc by the use of a wind turbine generator WTG, a solar cell PV and a fuel cell FC, a storage battery B and a commercial AC power source Utility, the wind turbine generator WTG, the solar cell PV and the fuel cell FC whose rated voltages are made equal to a rated voltage of the storage battery B are used as DC power sources; AC power from the commercial AC power source Utility is supplied to the load Lac/dc until the storage battery B is fully charged by the DC power sources; DC power from the storage battery B is supplied to the load Lac/dc when the storage battery B has been fully charged; and the AC power from the commercial AC power source Utility is supplied to the load Lac/dc as the storage battery B approaches the terminal period of discharging.

Abstract: A power-up control circuit controls the initial application of power to a system having multiple loads and multiple voltage supply levels. The control circuit causes the power to each load to rise equally, and limits the voltage levels to all loads to the lowest voltage being controlled by the control circuit. As each load reaches its target voltage, its voltage no longer limits the control circuit. The voltages to the remaining loads continue to rise, and loads whose target voltages are reached continue to drop out of the control circuit, until each load is receiving its target voltage.

Abstract: A power booster circuit for use with an integrated circuit coupled to power supply circuitry is provided. The integrated circuit includes a first circuit block that operates at a first voltage level and a second circuit block that operates at a second voltage level. The power supply circuitry includes a first regulator that receives a main supply voltage and provides a first supply voltage at the first voltage level and a second regulator that receives the first supply voltage from the first regulator and provides a second supply voltage at the second voltage level. The power booster circuit provides a temporary supply voltage at a third voltage level to the second circuit block in response to the main supply voltage during a time interval between a first time at which the first supply voltage reaches the first voltage level and a second time at which the second supply voltage reaches the second voltage level upon power up of the integrated circuit.

Abstract: An integrated circuit with a D.C./D.C. internal voltage regulator, including at least two power stages of the regulator, having respective terminals of connection to a supply voltage connected to distinct pads of the integrated circuit, and a single control stage.

Abstract: A low cost differential voltage limiter circuit provides a feedback to regulate a voltage output of a voltage source. In one embodiment, the limiter circuit includes a transistor coupled to outputs of first and second voltage sources. If a differential voltage between the two sources exceeds a predetermined threshold, the output voltage of the higher source is reduced. In one embodiment, a PNP transistor is used to regulate the high voltage source.

Abstract: In a hybrid power supply system which includes an electric double layer capacitor (10) having a pair of capacitor terminals (11 and 12), an energy storage (70a), and first and second bidirectional DC/DC converters (30a and 30b), the above-mentioned pair of capacitor terminals of the electric double layer capacitor are connected to a load (60a) through the first bidirectional DC/DC converter and are connected to the energy storage through the second bidirectional DC/DC converter.

Abstract: A power management system comprises a busboard for selectively managing the power from a forty-two volt source and a fourteen volt source in a vehicle dual voltage electrical system. The busboard has a lower plate with recesses for receiving variously configured busbars. The busbars have upright terminals for electrical connection with the voltage sources. The power from the voltage sources is directed along the busbars to other terminals extending at assorted locations from the busboard. An upper cover fits over the lower plate and covers the recesses. The upper cover has an area accommodating the forty-two volt source and housings for partially enclosing the other terminals. One of the housings forms a forty-two volt jump start post. Another of the housings forms a fourteen volt jump start post.

Abstract: A switchgear system, as well as a method of controlling a switching status of two switches in a switchgear system, are disclosed. The switchgear system includes a first switch capable of electrically coupling a first power source and a load, and a second switch capable of electrically coupling a second power source and the load. The switchgear system further includes a control unit coupled to both the first and second switches. The control unit includes a memory that stores software, and the control unit is capable of operating in at least two modes and controlling opening and closing of the first and second switches in accordance with those modes based upon the software. The switchgear system additionally includes an operator interface coupled to the control unit. The operator interface is capable of receiving additional information that enables the operation of the control unit in at least one of the at least two modes.

Abstract: A parallel power system is provided which can flexibly change output currents and the number of channels in short time and at low cost. A back board 7 of the parallel power system has connectors ECC and DCC for plug-in mounting power source circuits 1 to 6 and an electronic circuit 8. Terminals of the connectors DCC and EDC are connected by wiring lines HP. The power source circuits 1 to 3 constitute a first voltage channel by a power source line DH1 and a parallel operation control line PCH1 of the electronic circuit 8, whereas the power source circuits 4 to 6 constitute a second voltage channel by a power source line DH2 and a parallel operation control line PCH2. When a specification of the electronic circuit is to be changed, only the power source lines DH1 and DH2 and parallel operation control lines PCH1 and PCH2 are changed without changing the back board 7 and the like.

Abstract: A heat dissipation connector of the invention is not only an externally auxiliary heat dissipation device used beside relative electric appliance such as PC or the like to do heat dissipated away from relative electric appliance, but also an externally auxiliary connector to provide one or more USB ports to be used for other electric appliance.

Abstract: A method of predicting by non-invasive testing the available energy of a battery at any state of charge by acquiring data of the parameters of internal resistance (IR), open circuit voltage (OCV) and temperature (T), the points of voltage and current of the slope on a positive current ramp of Vup and Iup at the transition from charge to overcharge and on a negative current ramp of Vdn and Idn at the transition from overcharge to charge for a plurality of batteries. Next an algorithm in the form of a linear equation is developed using this data. The available energy of a battery under test is predicted by acquiring from it the numerical data values of these parameters and applying them to the algorithm.

Abstract: An alternator/inverter system for use with a portable generator which includes a voltage regulation system. The alternator/inverter incorporates a pair of permanent magnet generators (PMGs), a pair of active rectifier circuits, a pair of DC bus capacitors and a pair of H-bridge inverters, forming two distinct alternator/inverter sections. Each alternator/inverter section provides a 120 VAC output, and a 240 VAC output is formed between the two alternator/inverters sections. The voltage regulation system is formed from a pair of voltage regulation circuits that are associated with each alternator/inverter section. The circuits monitor the DC bus voltage of each alternator/inverter and determine the DC losses resulting from electrical cabling coupling the alternator/inverters to external loads, as well as the H-bridge inverters.

Abstract: A low cost differential voltage limiter circuit provides a feedback to regulate a voltage output of a voltage source. In one embodiment, the limiter circuit includes a transistor coupled to outputs of first and second voltage sources. If a differential voltage between the two sources exceeds a predetermined threshold, the output voltage of the higher source is reduced. In one embodiment, a PNP transistor is used to regulate the high voltage source.

Abstract: An electrical discharge machining (EDM) apparatus includes a plurality of work stations, where each work station has at least one electrode. The EDM apparatus further includes one or more power supplies and a power transfer switch for alternately supplying power to various sets of the electrodes. The power transfer switch has a first state wherein each power supply is connected to a corresponding first electrode in one of the work stations and a second state wherein each power supply is connected to a corresponding second electrode in another work station.

Abstract: A power supply detects power requirements of an electrical device and configures itself to provide the correct power to the device. By using a connector that isolates the device from its battery, the power supply can provide power to the device, recharge the battery, recharge the battery while at the same time providing power to the device, or provide power to the device while preventing the battery from being recharged. A switch used with the connector creates various circuits and is controllable by the power supply, the electrical device, by signals from the electrical device, or by a third device. The power supply may provide power to a plurality of devices and may be used with other power supplies to form a power grid. A master control unit receives inputs from each of the power supplies and controls the delivery and supply of power being the power supplies.

Abstract: The increasing number of mobile battery-powered small appliances with different feed voltages and connecting devices is calling for a universal and compact energy supply apparatus which provides for an uncomplicated and at the same time cost-efficient adjustability to as many small appliances as possible. To this end, the present application proposes a universal power supply unit consisting of an energy station with an integrated voltage converter in combination with various appliance-specific adapter cables with a group of electronic components. This generates an individual programming signal in the adapter cable which when coupling the adapter cable to the energy station causes a corresponding setting of the required output values. This leads to a simple matching of the unit with various small appliances and provides for a large field of applications. In particular, by feeding solar energy the power supply unit may be rendered autarchic in terms of energy.

Abstract: A dual energy coupling device involving the transfer of magnetic energy and electric energy between a pair of electric conductors is disclosed. The transfer of magnetic energy establishes an inductive coupling of a power source and a load of the device whereby an electric signal as a power signal or an indication of information can be communicated between inductively coupled power source and load. The transfer of electric energy facilitates an establishment of a capacitive coupling of another power source and another load of the device whereby an electric signal as part of a power signal or an indication of information can be communicated between the capacitively coupled power source and load.

Abstract: A rectifier circuit powers three power conversion modules using a three phase AC input without a neutral connection. First, second and third bridge rectifiers are connected to first, second and third phases of the three phase AC input and produce first, second and third rectified waveforms, respectively. A connection between the first, second and third bridge rectifiers forms a virtual neutral. Capacitors are connected across the bridge rectifies to filter the rectified waveforms and to create a DC rail voltage. The DC rail voltages feed power conversion modules. Two of the three power conversion modules remain powered at a decreased voltage level when the remaining power conversion module fails. Inductors are connected between the bridge rectifiers and the capacitors to further smooth the DC rail voltages and increase the power factor. Alternately, inductors are connected between the phases of the three phase AC input and the bridge rectifiers.

Abstract: A network controller and method is provided for managing the supply and distribution of electrical power. The network controller includes a plurality of power generation systems which are connected to a power network for communication thereon. Each power generation system includes at least one power generation unit connected to a corresponding sub-network. A user interface is connected to the power network for communicating with the first and second power generation systems. The network user interface allows a network user to set values for various predetermined operating parameters of the power generation units of the first and second power generation systems.

Abstract: Bipolar Gaussian pulses are utilized to modulate digital data to communicate information via standard power lines. The pulses are sent in a pulse train, at set intervals. Modulation is accomplished without use of a sinusoidal wave as a carrier. Data is transmitted via power lines while reducing the amount of radiated emissions, enhancing data security, and mitigating interference from other sources. Channel capacity is also maximized by channelization in code space.

Abstract: A system and method is provided for selecting a test load and/or bias resistor utilized in an expandable load system employing a backup power source. The test load and/or bias resistor is selected based on the actual load present in the expandable system. The backup power source is periodically tested during normal operation of the expandable load system utilizing the test load. A test load is provided that is sized for the actual load of a local load under worse case conditions. If an expansion load is connected to the local load the test load is adjusted, so that the test load is based on the actual load of the local load and the expansion load. Additionally, a bias resistance can be provided for driving a switch that allows power to be provided to the local load during power loss mode. If an expansion load is connected to the local load, the bias resistance is adjusted to correspond to a bias resistance necessary to provide the current for the actual load of the local load and the expansion load.

Abstract: An apparatus and method applicable to an electric power distribution installation, the electrical power distribution installation comprising: at least one main common bus bar; a plurality of main transformers, each main transformer being configured to step down a received power supply voltage and to supply the stepped down power supply voltage to a load via the main common bus bar; and a plurality of power generators, each power generator being connected to the main common bus bar, and the apparatus comprising: a first grounding device including at least one grounding transformer connected to the main common bus bar, a neutral point of the grounding transformer being grounded in a form of a predetermined low impedance grounding; and a second grounding device connected to each neutral point of the power generators to always ground each neutral point directly in a form of a predetermined high resistance grounding.

Abstract: A power supply booster module for a programmable logic controller system replaces the primary power supply for a number of modules within the system. The power supply booster module allows high power consuming or highly complex modules to be used within a programmable logic controller system. The power supply booster module eliminates the problems present in prior programmable logic controller systems where the primary power supply could not output enough current to adequately power all of the system modules or modules that have a high power requirement.

Abstract: Apparatus for electrically coupling a first digital device (408) and a second digital device (406) includes an interface circuit at the first digital device coupled at an interface node (230) to the second digital device. The interface circuit is configured to provide a first device supply voltage (Vcc2) to the interface node until a second device supply voltage (Vcc) at the interface node exceeds the first voltage. A data circuit (220) at the first digital device is coupled to the interface node. The data circuit is responsive to voltage on the interface node for providing digital logic signals at appropriate voltage levels to the second digital device.

Abstract: A line driver selectively drives one of two transmission lines. The line driver includes a differential amplifier connected to first and second differential switches. The first differential switch is connected between an output of the differential amplifier and a first of two transmission lines. The second differential switch is connected to the output of the differential amplifier and to the second of two transmission lines. The first and second differential switches are controlled by respective first and second control signals. The output of the differential amplifier is connected to either the first or the second transmission line in response to the first and second control signals. The differential switches include loopback protection to an prevent an incoming signal from passing from one transmission line to another during power down mode.

Abstract: The invention in the simplest form is a system for managing distributed power sources connected to a power grid. The present invention manages power flow to/from the power grid whether for a stand-alone power sourece or for local area utility grid or microgrid. When two or more power sources are interconnected by the local grid, each source has a power conditioning unit and a circuit breaker manager for controlling and regulating the electric flow to/from the grid. The individual power sources are able to independently draw power from the grid when required without extensive master control schemes. In a preferred embodiment the power sources are reformer equipped fuel cells and the heat from the fuel cell is used as a heat source for efficiency.

Abstract: A power distribution system and method, including a direct-current current source which is commutated among a number of distribution circuits which function as independent and modular power sources. Each distribution circuit includes a capacitor which is connected to the direct-current current source through a switch. The load is connected in parallel with the capacitor. The capacitor is charged to a predetermined level, generally matching the required load voltage, and periodically checked and recharged as necessary. There may be a plurality of distribution circuits to provide power to separate circuits or specific portions of a larger circuit. By varying the switch timing and logic, the output voltage of each distribution circuit may be varied, allowing a centralized power supply to provide power to a variety of electrical components with varying voltage requirements.

Abstract: An exemplary embodiment of the invention is a power system including a first power source, a first DC bus coupled to the first power source and a second DC bus coupled to the first power source. A power conditioning device is coupled to the first DC bus and the second DC bus. A load receives power from the power conditioning device.

Abstract: The present invention provides a power distribution system with a split section panelboard that provides two interior sections. Each section is supplied power from a separate power source. A common bus bridges the two sections. Remotely-operated circuit breakers for both the sections are connected to the common bus. A power interface unit converts power from one of the power sources to provide low voltage power for the circuit breaker motors and a control unit. The control unit in the panelboard controls the operation of the circuit breakers of both the sections.

Abstract: A power management system for integrated circuits having several voltage levels shorts two buses together during a voltage ramp period, so that the charge pumps connected to both buses drive both buses. When the lower bus reaches its design voltage, the shorting switch is opened and a set of pumps drives the higher bus to its design voltage. After the ramp, the voltage controls on the pumps and the current path to a bus are switched as needed in order to supply each bus with the required current capacity.

Abstract: A telecommunications power system according to the invention includes a power bus and a plurality of batteries that are connected to the power bus. A distribution module is connected to the power bus. A plurality of loads are connected to the distribution module. A plurality of rectifier modules are connected to the power bus and at least one AC power source. A generator provides backup AC power to the rectifier modules when the AC power source is interrupted. A controller is connected to the rectifier modules and the generator. A controller includes a battery recharging control module that allows the user to select a first mode of operation that allows the generator to recharge the battery when the generator provides the backup AC power. A second mode of operation prevents the batteries from recharging when the generator provides the backup AC power.

Abstract: A single- or multi-phase step wave power converter includes multiple transformers configured to receive DC voltage from one or more power sources. Each of the transformers includes a primary winding and a secondary winding. The transformers are each configured to supply a step for a step wave AC output. Bridge circuits are supplied for controlling input of DC voltage into the primary windings of the transformers. Steps for the step wave AC output are output from the secondary windings based upon the input provided to the primary windings. DC source management circuitry manages which DC power source(s) supplies DC voltage input to each of the bridge circuits. The management circuitry provides seamless power switching between the plurality of DC power sources based on each power source's performance characteristics. A pulse-width modulator can also be provided to the step wave power converter to modulate the input into a selected primary winding.

Abstract: A power station (10) includes a generator (13) which is driven by a turbine (11). The power station produces electrical power and outputs the electrical power to a network (17) via a generator switch (14). An electrical standby load (18) is also provided. When a network fault occurs, the generator is disconnected from the network by the generator switch and connected to the electrical standby load. The electrical standby load emulates the real load of the network that was present prior to the network fault, so that the voltage of the generator is stabilized at a constant phase difference or phase angle with respect to the voltage of the network that was present prior to the network fault. Alternatively, the value of the electrical standby load is adjusted during isolation of the generator from the network, to track the network while the generator is disconnected from the network and match the voltage phase angle of the generator to the network.

Abstract: A compensation circuit for a DC—DC converter having a low voltage output line and a plurality of high voltage output lines applied to a plurality of loads includes an adjustable impedance source connected to the low voltage output line. The impedance source generates a feedback control signal to the DC—DC converter used to control the transformer duty cycle. A sensing circuit is connected to the plurality of high voltage output lines for generating a control signal which represents variations in the output voltages of the high voltage output lines. The control signal is applied to the impedance source to thereby regulate the feedback control signal which in turn provides regulation for the high voltage output lines.

Abstract: A control system for a vessel utilizes a first and second power source to supply a first and second electrical load on the vessel. Each of the power sources is connected to its particular load and motorized switches are provided to allow operation of both the loads with a single power source, conveniently a generator, and to allow connection of each individual load to its own power source and to isolate the two loads and two power sources if both power sources are being used simultaneously.

Abstract: A power control apparatus includes a first driven circuit and a second driven circuit connected to the first driven circuit. A primary power-supply circuit produces a primary voltage from a source voltage of a battery and supplies the primary voltage to drive the first driven circuit. A secondary power-supply circuit produces a secondary voltage from the source voltage of the battery or from the primary voltage of the primary power-supply circuit, and supplies the secondary voltage to drive the second driven circuit. A control circuit outputs a power-supply control signal to the secondary power-supply circuit in response to a command signal, so that the supply of the secondary voltage to the second driven circuit by the secondary power-supply circuit is started or terminated by the power-supply control signal.

Abstract: A power supply distribution comprises equipment having a shared power bus. Supply isolators isolate the supply from the shared power bus in the event of a power supply output short circuit. Load isolators isolate the supply from other loads that may short circuit, or consume excess output current. Memory and isolators are used to detect and store the occurrence of load or supply failures, and memory may be of revertive or non-revertive type.

Abstract: A power supply system for an electric/electronic apparatus, such as a notebook computer and an expansion unit, which can be separated into a plurality of subunits or combined into one unit. When a DC power of an external power supply is applied to only an DC inlet A, a FET switch is turned off, so that the DC power at the DC inlet A is applied to both the DC/DC converters A and B. When the DC power of the external power supply is applied to both the DC inlets A and B, the FET switch is turned ON, so that the DC power at the DC inlet A is applied to the DC/DC converters A and the DC power at the DC inlet B is applied to the DC/DC converter B. The user can attach the AC adapter to only the DC inlet A or to both the DC inlets A and B to meet the system configuration, i.e., according to what kind of apparatus(es) is connected into the open slot(s).

Abstract: The present invention provides backup protection for circuit breaker failure by providing a programmable controller coupled to detect the failure of a circuit breaker to open on command and generate a command signal to all circuit breakers coupled to the programmable controller to open.

Abstract: The invention is a dual power source high heat electrical grill whose primary application is as an outdoor or indoor grill which uses the combination of AC and DC powered elements in a hybrid configuration to produce as much heat as conventional outdoor gas grills and more than could otherwise be produced by a conventional electric grill.

Abstract: An apparatus and method for controlling plumbing fixtures includes an electronic control board having a microprocessor that accepts four inputs and produces four outputs. Inputs at other than the microprocessor's operating voltage are converted thereto. Outputs having different voltages are controlled by latching relays. The control board can be used with a Smart Sink that requires a sequenced hand washing. The control board can form a node on a network that monitors and controls the functions of multiple boards throughout a facility.

Abstract: A power system plant includes a backplane arrangement including a primary and secondary bus to which intermediate power processing modules are selectively connected to the input and output power control and monitors of the plant. The backplane connections are controlled by the plug-in power processing modules. , the resulting connections are unique to the type of plug-in module placeed placed on an input shelf (i.e. rectifier or converter plug-in module) and determine how the plant is to operated. The connections of these plug-in modules to the backplane connector are such that the plug-in module is designed to have its connectors connect to either primary or secondary referenced control signals. The connectors of the backplane accept both type of plug-in modules so that any plug-in module inserted is automatically connected to respond to the appropriate primary or secondary referenced control signals.