Patent ID: 8148844
Filing Date: 2012-04-03
Classification: H02J,Y02B,Y02E,Y04S

Abstract:
1. A power supply system for supplying electrical power to a power consumption unit comprising a plurality of electrical appliances including a first group of appliances configured for receiving AC power only and a second group of appliances configured for receiving DC or AC power, the system comprising: (a) a first means of power supply providing AC power from a power grid through an AC power distribution unit; (b) a second means of power supply providing DC power generated by one or a plurality of alternative power sources remotely located to the consumption unit through a DC power distribution unit; (c) a third means of power supply providing DC power through one or a plurality of alternative power sources locally located to the power consumption unit; and (d) a means of selecting the power supplies for the second group of appliances by a power management device to minimize the AC power consumption,