| Entries |
| Document | Title | Date |
|---|
| 20080231116 | POWER-AWARE MULTI-CIRCUIT SYSTEM AND METHOD - A technique for operating a device at multiple different power levels dependent upon the amount of power received involves sensing the amount of power received and turning on circuit components or system functionality if power is adequate. A device constructed according to the technique should have the ability to detect at least two different, non-zero, power levels and turn on circuits or system functionality to the extent that sufficient power is detected. | 09-25-2008 |
| 20090079264 | POWER DEVICE AND STORAGE APPARATUS - One aspect of the embodiments utilizes a power adapter includes a main USB connector, an assist USB connector, a drive USB connector, and a power supply current combining circuit that combines a current from a power supply terminal of the main USB connector and a current from a power supply terminal of the assist USB connector so as to output a combined current to a power supply terminal of the drive USB connector. The adapter mutually inputs/outputs signals between the signal terminals of the main USB connector and the signal terminals of the drive USB connector. | 03-26-2009 |
| 20090230771 | SIMPLE AND PASSIVE SOLUTION FOR PROVIDING POWER INTERRUPTION CAPABILITY WITH CONTROLLED INRUSH CURRENT IN CRITICAL POWER SUPPLY - An electrical power supply system is provided with capacitor-based hold-up protection. Inrush current to the capacitor is passively limited with a combination of a resistor and a rectifying device connected to a hold-up capacitor. During start-up, the rectifying device may be reverse-biased and a portion of input current is shunted to charge the hold-up capacitor. In the event of input power failure, the rectifying device is forward biased and the capacitor may be discharged to a load of the power supply thereby providing hold-up protection for the load. | 09-17-2009 |
| 20090230772 | SYSTEM AND METHOD FOR LOAD SHARING IN MULTI-MODULE POWER SUPPLY SYSTEMS - A load sharing, multi-module power supply system for supplying power to a load. The system may involve: a first power supply module having a controller, and having a first per unit capacity (pu-c); a second power supply module having a controller, and having a second per unit capacity (pu-c); the controller of the first power supply module adapted to implement a reduction in an output power of the first power supply module upon the detection of an operating event, where a portion of the load being handled by the first power supply module is shed by a percentage, and such that the first power supply module remains operating during the operating event but at a reduced power output level; and upon the occurrence of the operating event the controller of the second power supply module is adapted to increase a power output of the second power supply module sufficient to accommodate the portion of the load that has been shed by the first power supply module. | 09-17-2009 |
| 20090289502 | METHOD AND SYSTEM FOR BALANCING POWER DISTRIBUTION IN DC TO DC POWER CONVERSION - A method for balancing power distribution in a direct current to direct current (DC to DC) power-conversion system is provided. The power-conversion system includes a plurality of channels that are connected to a load. The channels are also connected to corresponding power sources. The method, at a first channel, includes obtaining a first power, which is the maximum power of the power source connected to the first channel. Further, the method includes computing a reference power based on the power output of the channels. Furthermore, the method includes outputting the reference power when the first power is greater than or equal to the reference power, and outputting the first power when the first power is less than the reference power. | 11-26-2009 |
| 20090315401 | POWER SUPPLY UNIT - The power supply unit has a sample-and-hold circuit that samples a voltage supplied from a power source to a load according to a sample timing signal and holds the voltage as an output set value for the DC/DC converter. The unit supplies a load with an output from the DC/DC converter controlled so that an output voltage of power source ( | 12-24-2009 |
| 20100164287 | ELECTRIC POWER SUPPLY SYSTEM BETWEEN VEHICLE AND HOUSE - An electric bower supply system includes a power supply controlling element ( | 07-01-2010 |
| 20110068628 | POWER ASSIST DEVICE - [Problem] When load power is assisted, the number of component parts becomes greater because an AC power detector is provided in the AC power supply of an inverter. | 03-24-2011 |
| 20110080047 | SOLAR POWER SUPPLY SYSTEM SUPPORTING AC/DC POWER CONVERSION LOADS - A solar power supply system includes a power supply unit, a rectification unit, a solar power supply unit and an AC/DC power conversion load. The power supply unit may be an AC power derived from a household electrical source and then rectified to a second DC power through the rectification unit. The solar power supply unit has at least one solar panel connected in series or parallel to provide a first DC power. The AC/DC power conversion load receives the second DC power from the power supply unit and the first DC power from the solar power supply unit, and supplies the power to an appliance. | 04-07-2011 |
| 20110140523 | APPARATUS, SYSTEM AND METHOD EMPLOYING A UPS - A method of installing a power distribution system in a facility includes acts of: obtaining a power distribution unit including at least one rack mounted power distribution unit, the power distribution unit including an electrical connection having an electrical bus configured to directly connect to a riser of a power busway; installing the power busway from a terminus located at the output of the UPS to the electrical connection at the power distribution unit; and directly connecting the power busway to the output of the UPS with a busbar-to-busbar connection between the output of the UPS and the terminus of the busway. | 06-16-2011 |
| 20120019069 | COMPUTER SYSTEM AND CONTROL METHOD THEREOF - A computer system includes multiple ports to which at least one external device is connected and which are connectable to multiple power supplying lines branched from a power supplying line for supplying electric power to the at least one external device; a switching unit which controls connections between the power supplying lines and the ports; and a controller which controls the switching unit so that two or more power supplying lines among the power supplying lines are connected to a first port, to which one of the at least one external device is connected, among the ports. | 01-26-2012 |
| 20120146416 | TEST APPARATUS - A DUT comprises a notifying circuit configured to generate a notification signal which is used to notify an external circuit of an event that leads to a change in the operating current of the DUT before such an event occurs. A main power supply supplies electric power to a power supply terminal of the DUT. A power supply compensation circuit comprises a switch element which is controlled according to a control signal, and is configured to generate a compensation pulse current according to the on/off state of the switch element. A compensation control circuit receives the notification signal from the DUT, and outputs, to the power supply compensation circuit, a control signal which is used to control the switch element, and which is generated based upon at least the notification signal. | 06-14-2012 |
| 20120217805 | Method and System for Distributing Energy - A method of delivering electrical energy to a point in an electrical power grid, including accessing a source of energy at a first location and converting the energy into a form of transportable energy. The next step is transporting the transportable energy via a bulk transportation network from the first location to the point on said electrical power grid at a second location having a need for additional electrical power without the transportable energy going through the electrical power grid to get to the point. The next step is converting the form of transportable energy into electrical energy suitable for connecting to the power grid and discharging the electrical energy into the power grid at the second location. A system for delivering electrical energy is also provided. The transportable energy preferably takes the form of charged electrolytes, compressed air or thermal storage units, transported, for example, by way of trains. | 08-30-2012 |
| 20120261990 | PHOTOVOLTAIC POWER PLANT OUTPUT - A photovoltaic power system can include a photovoltaic array, an inverter, and a battery. | 10-18-2012 |
| 20130307337 | POWER DISTRIBUTION SYSTEM - An example power distribution system includes a relay moveable to a position that holds at least one contactor closed. The relay is moved to the position in response to an alternate source powering a power distribution system rather than a main source powering the power distribution system. | 11-21-2013 |
| 20140103724 | BIDIRECTIONAL POWER SYSTEM, OPERATION METHOD, AND CONTROLLER FOR OPERATING - A power source of a bidirectional power system includes an energy storage device. Power can be transferred between the power source at a DC voltage and an electrical distribution network and/or a load at an AC voltage. A control system monitors for an islanding condition and, during normal operation, maintains an amount of power stored in the energy storage device and provides power to the load and/or network. Responsive to an islanding condition, power to the load can be maintained using the energy storage device, and the power system can be shut down and/or decoupled from the distribution network. | 04-17-2014 |
| 20150076909 | Device With Dual Power Sources - A wearable device includes a sensor, auxiliary electronics, a primary power supply configured to harvest radio frequency (RF) radiation received from an external reader and use the harvested RF radiation to power the sensor, and an auxiliary power supply configured to harvest energy other than that received from the external reader and use the harvested energy to supply power to the sensor and/or the auxiliary electronics. The external reader may supply less power in response to operation of the auxiliary power supply. Additionally or alternatively, in response to a determination that the auxiliary power supply is unable to supply power, the wearable device may disable all auxiliary electronics but for the sensor. In response to a determination that the primary power supply is unable to supply power but the auxiliary power supply is able to supply power, the wearable device may retain operating parameters in the memory storage unit using the auxiliary power supply. | 03-19-2015 |
| 20150333519 | CONTROL METHOD AND CONTROL SYSTEM FOR PARALLEL OPERATION BETWEEN DIFFERENT TYPES OF POWER GENERATOR - In a control method performed in shifting a plurality of different types of power generators to parallel operation, at least one of output voltage and a voltage drooping characteristic of at least one of the plurality of power generators is changed. In the case where the plurality of different types of power generators are a plurality of synchronous power generators having different voltage drooping characteristics, the voltage drooping characteristic of one power generator having a smaller voltage drooping characteristic among the plurality of power generators to be operated in parallel is changed so as to coincide with the voltage drooping characteristic of the other power generator. At the time of changing the voltage drooping characteristic, the other power generator is controlled so that the output voltage thereof is maintained at a value before start of the parallel operation. | 11-19-2015 |
| 20160094036 | SYSTEM OF PARALLEL-CONNECTED GENERATORS AND METHOD FOR LOAD SHARE BALANCING THEREIN USING A SERIAL COMMUNICATION NETWORK - A parallel generator system wherein a portion of the electrical load of at least one generator unit is incrementally transferred to at least one other generator unit by the controller on the basis of an indication that the operating stresses of the generator units are disallowably unbalanced, whereby load share balancing tending towards equalization of operating stresses amongst the plurality of generator units occurs over the system service life. Also, a method for load share balancing in a parallel generator system which determines whether the operating stress levels of at least two generator units are disallowably unbalanced by comparing operating stress indicators of the generator units with that of a master generator unit, and incrementally transferring portions the electrical load between at least two generator units on the basis of the comparative evaluation, whereby load share balancing occurs tending to equalize the generator unit operating stress levels. | 03-31-2016 |
