Patent ID: 8338988

Claim:
A method of a power supply system comprising: forming a power supply set through ORing outputs of each of a plurality of power supplies coupled in parallel to support a common system load; providing power to the system load using the power supply set, each of the plurality of power supplies of the power supply set being configured to have modes of operation associated therewith based on a power demand associated with the system load, at least one power supply of the power supply set being configured to operate in an active mode to provide requisite power to the system load, the each of the plurality of power supplies being capable of operating in the active mode and a plurality of non-active modes, and the each of the plurality of power supplies having a priority level associated therewith based on the mode of operation associated therewith; and dynamically modifying a mode of operation of at least one of the at least one power supply in the active mode and at least one power supply in a non-active mode sequentially in an order of the priority levels from a current state thereof in accordance with a variation in the power demand associated with the system load outside a threshold level of optimum operation of the at least one power supply in the active mode, the dynamic modification of the mode of operation including one of switching between a non-active mode and an active mode and switching between non-active modes, wherein whenever the power demand associated with the system load necessitates a power supply in a non-active mode to also be transitioned into the active mode in addition to the at least one power supply already in the active mode, each of the remaining power supplies is transitioned into a non-active mode having an immediately higher priority level than a current level thereof.