Patent application number | Description | Published |
20120228944 | DC POWER DISTRIBUTION SYSTEM - A DC power distribution system is equipped with a storage device having a first storage battery, which discharges to electrical apparatuses only during power failure, and a second storage battery, which discharges to electrical apparatuses when service is not interrupted. The electricity storage device and electrical apparatuses are supplied with DC power from a power generation device which generates electricity using natural energy, and DC power which has been converted from AC power supplied from a commercial power source. When the power supply from the electricity generation device and the commercial power source is interrupted, the first storage battery discharges power to the electrical apparatuses. | 09-13-2012 |
20130128624 | DC/DC CONVERTER - A DC/DC converter has DC input terminals to which a DC power is inputted, a transformer, and a bidirectional switching device on the primary side of the transformer. | 05-23-2013 |
20130140901 | DC POWER SUPPLY SYSTEM - A DC power supply system includes a DC power supply and a secondary battery for backing up the DC power supply. When a voltage of the DC power supply is lower than a voltage of the secondary battery, the DC power system adds an extra voltage to the voltage of the DC power supply to provide an input voltage to the secondary battery higher than the voltage of the secondary battery by using an electric power of the secondary battery, and the secondary battery is charged. | 06-06-2013 |
20130170252 | ELECTRIC POWER SUPPLY APPARATUS - An electric power supply apparatus, which enables a driving frequency of a switching circuit connected to a primary side of a transformer constant and output of a secondary side variable, comprises a transformer ( | 07-04-2013 |
20140307489 | CONTROL METHOD FOR INVERTER DEVICE, AND INVERTER DEVICE - An inverter device ( | 10-16-2014 |
20140362626 | MULTILEVEL INVERTER DEVICE - A multilevel inverter device comprises: a series circuit of a first switching element | 12-11-2014 |
20150288296 | POWER CONVERSION DEVICE - There is provided a device including: an inverter | 10-08-2015 |
20150295451 | POWER CONTROL SYSTEM AND SOLAR POWER GENERATION SYSTEM - A solar power generation system includes: a solar power generation module | 10-15-2015 |