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| Number | Title | Issue Date |
| 8138632 | Control method for redundant use in the event of a fault in a polyphase converter with distributed energy stores The invention relates to a method for controlling a power converter having at least two phase modules, which each have an upper and a lower valve branch, each having at least three series-connected two-pole subsystems, in the event of failure of at least one subsyst... | 03/20/2012 |
| 8084888 | Method for the production of high amplitude RF voltages with control of the phase angle between outputs A method of producing high frequency high amplitude AC voltages with control of the phase angle between outputs from a plurality of generators having individual DC current controlled variable inductors which method comprises controlling the timing of the circuit to ... | 12/27/2011 |
| 8013473 | Detector based combination regulator Methods and apparatus provide multiple input voltage regulation in which one regulator is selected for operation based on input power conditions. In one example, a dual input voltage regulator system in a combination smart card selects between contact and contactles... | 09/06/2011 |
| 7915762 | Method for controlling a cluster of wind turbines connected to a utility grid A method for controlling a cluster of wind turbines connected to a utility grid includes the steps of determining the frequency of the utility grid, detecting a frequency deviation in the utility grid, and disconnecting the wind turbines at different predefined freq... | 03/29/2011 |
| 7872376 | Multi-input power-switching circuit The present invention discloses a multi-input power-switching circuit, which comprises: more than one power input terminal, more than one detection/evaluation circuit, and a switching/controlling unit. A switch is arranged in the path via which the input power is re... | 01/18/2011 |
| 7868484 | Worldwide adaptive multi-coil automatic transfer switch A multi-coil automatic transfer switch (ATS) adapted for automatically switching an appropriately rated component to render the ATS operational over a worldwide voltage range is provided. A low voltage contactor includes a low voltage coil magnetically linked with a... | 01/11/2011 |
| 7709977 | Method and arrangement for controlling a switching connection between the electrical outputs of a fuel cell and an isolated electrical network The invention relates to a method and apparatus for controlling and for setting the switching states of switches which are connected to the electrical poles or outputs of a fuel cell and which are followed by a network, which is fed from the fuel cell, and has loads... | 05/04/2010 |
| 7667350 | Electric power source apparatus using fuel cell and method of controlling the same A method of controlling an electric power source apparatus, which comprises supplying electric power to an electronic device on which a secondary battery is mounted from a power source apparatus having a fuel cell and an auxiliary power source. Electric power is sup... | 02/23/2010 |
| 7667351 | Method for pulse width modulation synchronization in a parallel UPS system A method for pulse width modulated pulse synchronization in a parallel UPS system uses the locally measured critical bus voltage to detect a zero crossing and adjust the PWM pulse to coincide with the zero crossing. No communication between the units is required to ... | 02/23/2010 |
| 7608947 | Back-up power supply systems A back-up power supply system includes, in one embodiment, a threshold detector circuit; a first switching circuit for enabling access to a back-up power source, the first switching circuit comprising at least a first transistor; and an inverting switch coupled betw... | 10/27/2009 |
| 7459804 | Static transfer switch device and method Devices and methods for improved voltage source transfer switching. First and second voltage sources (primary and alternate) are connectable to a load via corresponding first and second switches, which may comprise SCRs. A controller operates the switches according ... | 12/02/2008 |
| 7417337 | Method and system for facilitating no-break power transfer An improved method and system for facilitating no-break power transfer between an APU and a main engine includes determining a required APU speed for conducting power transfer based on various APU operating parameters, such as engine speed, fuel, environmental tempe... | 08/26/2008 |
| 7408272 | Method and device for supplying electric energy power to an appliance The invention concerns a portable device for electric power supply comprising: connection means (8) for connecting an appliance (1) to be powered; and a power supply circuit (6; 16) supplying in output a supply voltage for the appliance when the... | 08/05/2008 |
| 7400493 | Circuit breaking link status detection and reporting circuit Certain embodiments provide a circuit breaking link status and reporting system. The system includes a power source and a circuit breaking link in communication therewith. An electrical outlet is in interruptible power supply communication with the circuit breaking ... | 07/15/2008 |
| 7382064 | Supply voltage identifier A supply identifier takes precise decision on the range of the external supply to manage a proper internal supply to the core of the IC by controlling a regulator or a switch connected to external supply. This supply identifier defers the decision until everything t... | 06/03/2008 |
| 7368836 | Volt-second synchronization for magnetic loads A method and device for connecting a load to an AC power source is arranged to ensure that the volt-second ratings of magnetic devices in the load are not exceeded, in order to limit in-rush currents resulting from saturation of the magnetic devices. In the case whe... | 05/06/2008 |
| 7362601 | Power supply device A power supply device includes two input ports, two output ports, a transformer having primary and secondary windings, a switch device, and a controller. The switch device includes a switching element connected in series with the primary winding, and a capacitor. Th... | 04/22/2008 |
| 7362600 | Method and apparatus for cycle error correction for a power converter device, such as an electronic power inverter Cycle error correction is performed in an electronic power system to compensate for a difference between an AC grid side frequency and an AC load side frequency. The electronic power system includes an electronic power inverter, such as one usable with an uninterrup... | 04/22/2008 |
| 7362009 | Chain reaction control circuit for parallel power supply A chain reaction control circuit for parallel power supply provides greater power without changing the design of the original power supply structure. It includes a control unit to receive a first power actuation signal output from a power actuation unit, then output... | 04/22/2008 |
| 7357128 | Closed loop defined profile current controller for electromagnetic rail gun applications A closed loop current controller for an electromagnetic rail gun. It is necessary to control the muzzle velocity of a rail gun accurately for the gun to be a good artillery device. The present invention provides a closed loop control system to accurately regulate th... | 04/15/2008 |
| 7353162 | Scalable reconfigurable prototyping system and method A method and a system provide a reconfigurable platform for designing and emulating a user design. The method and system facilitates design and emulation of a system-on-a-chip type user design. The netlist of a user design may be included with netlists from customiz... | 04/01/2008 |
| 7352082 | Transfer switch device and method This disclosure is concerned with devices and methods for voltage source transfer switching that reduces or eliminates transformer saturation due to DC flux built up during a transfer event. First and second voltage sources (primary and alternate) are connectable to... | 04/01/2008 |
| 7340330 | Hybrid type vehicle driving controller, hybrid type vehicle driving control method and its program The invention has an engine maximum torque calculating processor for calculating plural engine maximum torques showing a maximum value of engine torque, and an engine limit torque calculating processor for calculating a minimum value of the respective engine maximum... | 03/04/2008 |
| 7336037 | Intelligent electrical switching device The present invention, according to a preferred embodiment, is directed to portable electronic devices which operate on exhaustible power sources, for example, batteries. The electronic devices of the present invention comprise at least one signal switch and a micro... | 02/26/2008 |
| 7312695 | Apparatus and method for displaying operating characteristics on status indicators A user interface for a load control device allows a user to control an operating characteristic of a load to a plurality of discrete levels. The user interface comprises an adjustment member for allowing the user to select one of the discrete levels and a linear arr... | 12/25/2007 |
| 7282815 | Method and circuit arrangement for minimizing interference in an electronic circuit The method and circuit arrangement both minimize stray electromagnetic interference in an electronic circuit, in which symmetric measurement signals are evaluated. Both inputs (InP, InM) of an evaluation circuit (2) are provided with a bank of switchable capa... | 10/16/2007 |
| 7275983 | System for limiting an increase in the inside air temperature of passenger compartment of vehicle Light control glasses are used as window glasses of a vehicle. When the vehicle is parked, voltage is applied to the light control glass, which directly receives solar radiation from the sun, so that a light transmittancy of the light control glass is reduced to red... | 10/02/2007 |
| 7274117 | Radio wall switch A radio wall switch that uses radio signals to control a load through a load circuit is disclosed. The radio wall switch is also configured group or bind electronic devices to operate collectively by responding to the same radio control signals. Preferably, the radi... | 09/25/2007 |
| 7269036 | Method and apparatus for adjusting wakeup time in electrical power converter systems and transformer isolation An electrical power converter system adjusts a wakeup voltage periodically, to permit earlier connection and/or operation, to increase performance. The electrical power converter system selects between a mathematically adjusted wakeup voltage based on at least one p... | 09/11/2007 |
| 7262516 | Methods and systems for operating engine generator sets Methods and systems for an engine generator set that includes an electrical generator configured to provide electrical energy to a first load rated at a first voltage and a first frequency, and to provide electrical energy to a second load rated at a second voltage ... | 08/28/2007 |
| 7259477 | Uninterruptible power supply An uninterruptible power supply (UPS) system includes an AC power input configured to receive AC power from a single-phase AC power source or a multi-phase AC power source, a DC power source, an output circuit including a power output, a controllable switch configur... | 08/21/2007 |
| 7256604 | Semiconductor device A power supply potential and a ground potential are supplied to a test-use power supply pad and a test-use ground pad, respectively. The power supply potential supplied to the test-use power supply pad is transferred to power supply lines and then to each circuit bl... | 08/14/2007 |
| 7233866 | Device for the management of electrical sockets A device for the management of electrical sockets connected to a branch of an AC electrical network includes a monitor circuit arranged to detect a presence or absence of a load connected to one of the sockets, and a voltage level management circuit connected to the... | 06/19/2007 |
| 7233081 | Power-supply device A power-supply device suppresses high harmonic waves, controls the flow of AC power, and minimizes adverse effects on a load that might otherwise be caused by a large surge of current into the load during the startup or stopping of the power-supply device. The power... | 06/19/2007 |
| 7215040 | Half-bridge converter with zero-voltage switching and snubber A method and apparatus for digital power processing operating with zero-voltage switching, which enables zero-voltage switching under the condition that the frequencies are not constant, or the load currents are different. Two switching components are connected with... | 05/08/2007 |
| 7216197 | System and method for adjusting pooling of system memory in reponse to changes in monitored data processor activity A method and related computer system that allow monitoring at least one memory-accessing device, and adjusting pooling of data processing system memory devices in response to the monitoring. ... | 05/08/2007 |
| 7187563 | DC/DC converter with multiple mutually-isolated power sources An electronic circuit includes a first power source, a second power source, a load, and a converter connected to each power source and the load. The converter has (i) a first oscillator circuit connected to the first power source, (ii) a second oscillator circuit co... | 03/06/2007 |
| 7183667 | Method and apparatus for power inverter synchronization A control circuit synchronizes an ac power inverter to the mains voltage of an electrical grid by matching the fundamental phasor components of the inverter's output voltage to the fundamental phasor components of the mains voltage. Once such matching meets an accep... | 02/27/2007 |
| 7180210 | Standby generator integration system A standby generator integration system for efficiently integrating one or more standby generators into an operational power grid. The standby generator integration system includes a control center in communication with a plurality of control units. Each of the contr... | 02/20/2007 |
| 7171570 | Method and apparatus for selectively increasing the operating speed of an electronic circuit One embodiment of the present invention provides a system that facilitates selectively increasing the operating frequency of an electronic circuit, such as a computer system. The system begins by operating in a low-power state with the frequency and voltage of the e... | 01/30/2007 |
