About 39 results
https://drivepatents.com/patents/997654 · 3 Oct 2012
A grid tied inverter connectable to an electricity grid, the grid tied inverter comprising a DC to DC current fed push-pull inverter operable to generate a current waveform from a DC voltage source, the current waveform being substantially synchronised to ...
https://drivepatents.com/patents/998079 · 19 Sep 2012
The system has a power supply station (SUB) for supplying power to a local power grid (DEN1) through a switching device (COM1) that is connected to the grid. A power storage unit e.g. motor vehicle's electric battery, is connected to the grid through the s...
https://drivepatents.com/patents/998471 · 12 Sep 2012
A power distribution system distributes power to each section of a building via a main line which is wired to pass through each section of the building. The power distribution system is equipped with a plurality of sensors which are provided at each sectio...
https://drivepatents.com/patents/999404 · 15 Aug 2012
A power supply system includes a current detection unit for detecting a current used by a load and an electric cell. The power supply system further includes a control unit for controlling the electric power stored in the electric cell to be supplied to th...
https://drivepatents.com/patents/1000346 · 18 Jul 2012
The present invention provides a multi-terminal power conversion device, a multi-terminal power transfer device, and a power network system which allows an existing power grid to be divided into a plurality of power grids that can be interconnected togethe...
https://drivepatents.com/patents/1005330 · 8 Feb 2012
A system (10) for generating electrical power is described. The system (10) comprises a turbine (11) that is mechanically connected to a generator (12), wherein the generator (12) is electrically connected via a first converter (13) to a load (15). The fir...
https://drivepatents.com/patents/1006248 · 11 Jan 2012
A power loop (22) is formed by a plurality of loop segments connectable by switches to form the power loop. The power loop is configured to receive power from a plurality of power sources (24, 26, 28, 30). The switches connect the power loop to a plurality...
https://drivepatents.com/patents/1009211 · 28 Sep 2011
The invention concerns a method of estimating an energy demand to be covered by a supplier, the method comprising the steps of , for each of a plurality of customers of the supplier, taking (101) a continuous measurement of current energy consumption; base...
https://drivepatents.com/patents/1013633 · 20 Apr 2011
The invention is related to a method, power control device and computer program product for evaluating the accuracy of timing provided by time generating equipment (12, 14, 16, 20, 22, 24, 26, 28, 32) in relation to wide area control in a power transmissio...
https://drivepatents.com/patents/1081061 · 5 Jan 2005
A wake up circuit according to one embodiment includes a comparison circuit and an output decision circuit. The comparison circuit may be adapted to receive a first signal representative of a charging current level provided to a battery via a path and a se...