Patent ID: 6590793
Filing Date: 2003-07-08
Classification: H02J,Y02E

Abstract:
An electric power supplying apparatus comprising:an unstable power supply that generates electric power; an electric power storage unit that is connected to said unstable electric power supply in parallel; a switch that is connected between said unstable electric power supply and said electric power storage unit in series; a converter that converts electric power supplied from said unstable electric power supply, or from both said unstable electric power supply and said electric power storage unit, to electric power which is suitable for a load so as to supply the converted electric power to the load; and a controller that controls opening and closing of said switch and controls an operation of said converter based on an output from the unstable electric power supply so as to efficiently operate the unstable electric power supply, wherein said controller opens said switch during an independent-driving mode period and closes said switch outside of the independent-driving mode period.