| Patent application number | Description | Published |
|---|
| 20100124682 | FUEL CELL SYSTEM - Fuel cell system includes: a fuel cell for outputting, via a pair of terminals, electric energy produced through reaction between oxygen contained in air supplied to an air electrode and hydrogen contained in fuel gas supplied to a fuel electrode; a subsidiary power supply device for supplying electric power to the terminals; a detection section for detecting a supplied pressure of the fuel gas; and a control section for, when the detected gas pressure is lower than required gas pressure, performing control to cause electric power, corresponding to a difference between the detected gas pressure and the required gas pressure, to be supplied from the subsidiary power supply device to the terminals. | 05-20-2010 |
| 20100252029 | HOT WATER FEEDER - A hot water feeder in which a solar heat collector is used. The feeder has a first heat exchanger for heating a heat medium by solar heat, a second heat exchanger for heating water in a hot-water tank by the heated heat medium, and a heat exchange volume determination unit. The heat exchange volume determination unit calculates the flow rate of the heat medium circulating between the first and second heat exchangers on the basis of the detected temperature of the heat medium fed to the first heat exchanger and the rotational speed of a heat medium circulation pump, and calculates the heat exchange volume on basis of the flow rate and the temperature difference between the detected temperatures. | 10-07-2010 |
| 20100263711 | MAXIMUM POWER POINT TRACKING CONTROL APPARATUS FOR SOLAR BATTERY - Maximum power point tracking control apparatus for a solar battery includes: a voltage detection section for detecting an output voltage of the battery; a current detection section for detecting an output current of the battery; a storage section storing therein duty cycle values of a solar-battery output controlling switching element that are predefined on the basis of relationship between output voltages and currents of the battery; and a control section for, at the start of maximum power point tracking control, reading out, from the storage section, one of the duty cycle values that corresponds to the detected output voltage and controlling a duty cycle of the switching element in accordance with the read-out duty cycle value. | 10-21-2010 |
| 20110030673 | HOT WATER SUPPLY SYSTEM - In a hot water supply system having a solar heater that heats a heating medium with absorbed solar heat, a cogeneration unit that heats the medium by heat exhausted from an engine, a hot water supply unit with a heat exchanger for heat-exchanging between the medium and water supplied from a water supply source to generate the hot water, a medium circulator that circulates the medium among the solar heater, cogeneration unit and heat exchanger, an electric heater that heats the hot water with the power generated by the generator, a heat absorption amount to be adsorbed by the solar heater is estimated and operations of the cogeneration unit and the electric heater are controlled based on the estimated heat absorption amount, thereby enabling to improve energy efficiency of the entire system. | 02-10-2011 |
| 20110035070 | POWER SUPPLY SYSTEM - In a power supply system ( | 02-10-2011 |
