POWER SUPPLY DEVICE AND ELECTRICAL APPARATUS USING THE SAME

• Main Authors: MORIMOTO ATSUSHI, OGAWA MASANORI
• Format: Patent
• Language: English
• Published: 23.08.2012
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS,e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USERAPPLICATIONS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ONOTHER TECHNOLOGY AREAS; SYSTEMS FOR STORING ELECTRIC ENERGY; SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORKOPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FORIMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION,DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

PROBLEM TO BE SOLVED: To implement monitoring of a load operation state simply and without increasing power consumption.SOLUTION: A power supply device comprises: input voltage monitoring means 4 for monitoring power supply voltage received from a commercial power supply 3, a distributed power supply, or a power storage device; input current monitoring means 5 for monitoring power supply current supplied to mainly a first load device 2; a transformer 6 reducing all or part of the voltage that is higher than a rated voltage or higher than a desired voltage, when the power supply voltage is higher than the desired voltage and the power supply current is in a conduction state; power supply means 8 for supplying a second load device 7 with power from all or part of the voltage reduced by the transformer 6; and communication means 9 for transmitting a state of the first load device 2 to an external apparatus according to a signal from the input current monitoring means 5. Thereby, the desired objective is achieved.