Patent ID: 9692257
Date: 2017-06-27
CPC Classifications: H02J

Claim:
1. A control device that controls power to be supplied to a specific load from at least one of a converter that has a power generator and a storage battery both connected thereto and converts DC power into AC power, and a commercial power supply, wherein the control device determines whether the commercial power supply is in a power failure state or a power distribution state, and wherein: when determining that the commercial power supply is in a power distribution state, the control device causes both of the converter and the commercial power supply to be connected to the specific load; when determining that the commercial power supply has made a transition from a power distribution state to a power failure state, the control device causes the commercial power supply to be disconnected from the specific load while maintaining connection between the converter and the specific load; and when determining that the commercial power supply has made a transition from a power failure state to a power distribution state, the control device causes the converter to be disconnected from the specific load and the commercial power supply to be connected to the specific load.