Patent application number | Description | Published |
20110313590 | DISTRIBUTED POWER SUPPLY SYSTEM - A distributed power supply system of the present invention comprises a distributed power supply apparatus ( | 12-22-2011 |
20120214028 | FUEL CELL SYSTEM AND OPERATION METHOD OF FUEL CELL SYSTEM - A fuel cell system ( | 08-23-2012 |
20120218794 | DISTRIBUTED POWER SUPPLY SYSTEM AND CONTROL METHOD THEREOF - A distributed power supply system is configured to execute a process for determining whether or not to permit a diagnostic process in such a manner that it is determined whether or not a difference between a set upper limit value and an actual measurement current value is not less than a load current value, the set upper limit value being a predetermined upper limit value set with respect to a detected current of a current sensor, the measurement current value being detected by the current sensor in a state where the diagnostic process is not executed, and the load current value being a value of a current flowing from a commercial power utility to a power load during execution of the diagnostic process; and if it is determined that the difference is not less than the load current value, the controller permits the diagnostic process. | 08-30-2012 |
20120286759 | DISTRIBUTED POWER GENERATION SYSTEM - A distributed power generation system of the present invention is a distributed power generation system connected to a three-wire electric power system including first to third electric wires, the third electric wire being a neutral wire, and includes: an electric power generator ( | 11-15-2012 |
20130108938 | POWER CONVERTER AND FUEL CELL SYSTEM INCLUDING THE SAME | 05-02-2013 |
20140203647 | DISTRIBUTED POWER GENERATION SYSTEM AND METHOD OF OPERATING THE SAME - The distributed power generation system includes: an inverter connected to the first connection point; a first power generator; a current sensor provided on the power line between the commercial power supply and the first connection point; and a controller. In a case where a current flowing in a direction from the first connection point to the commercial power supply is a positive current, in a state where the inverter is disconnected, the controller determines that there is an abnormality in an installation state of the current sensor, or gives a notification of the abnormality in the installation state of the current sensor, if differential power that is obtained by subtracting power consumed by the electrical load from output power of the inverter is greater than a first threshold greater than 0. | 07-24-2014 |
20140305386 | COGENERATION SYSTEM AND METHOD FOR CONTROLLING SAME - The cogeneration system includes: a cogeneration apparatus which generates electric power using supplied fuel gas and supplies the electric power and heat; a heat accumulator which accumulates the heat supplied by the cogeneration apparatus; a controller which controls at least start and stop of the cogeneration apparatus; and a display unit that displays a remaining power generation duration which is a length of time for which the cogeneration apparatus can continue power generation. The controller further calculates the remaining power generation duration based on a remaining heat accumulation capacity which is a difference between (a) a maximum accumulable heat amount which is the amount of heat the heat accumulator is capable of accumulating and (b) a current accumulated heat amount that is the amount of heat currently accumulated in the heat accumulator, and causes the display unit to display the calculated remaining power generation duration. | 10-16-2014 |
20150318700 | POWER SUPPLY SYSTEM, POWER CONVERSION APPARATUS, AND MEASUREMENT POINT SWITCHING APPARATUS - An autonomous distribution board receives feeding of power via a distribution board for a period during which grid power is supplied from a grid power source, while receiving power via an autonomous terminal of a power conversion apparatus for a period during which supplying of grid power from grid power source is stopped. Autonomous distribution board is connected with a specific load and the like. A measurement point switching apparatus is configured to select one from a current sensor configured to monitor a current that flows through a main breaker, and a current sensor configured to monitor a current that is supplied from power conversion apparatus to autonomous distribution board. A fuel battery is configured to adjust an output thereof based on an output of the selected one so that power by fuel battery is consumed by a general load, specific load and the like. | 11-05-2015 |