Patent ID: 6946818

Claim:
A method of providing closed-loop control of power flowing into and out of an electrical energy storage system, comprising the steps of: determining a charge power limit comprising a maximum charge power during each of a plurality of control loops; determining a discharge power limit comprising a maximum discharge power during each of the plurality of control loops; comparing the charge power limit and the discharge power limit during each of the plurality of control loops; and providing a charge power limit output and a discharge power limit output for use in a subsequent control loop which are based upon the charge power limit and the discharge power limit, wherein the charge power limit output and discharge power limit output are equal to the discharge power limit and charge power limit, respectively, when the discharge power limit is greater than the charge power limit; and wherein the charge power limit output and discharge power limit output are selected from the group consisting of the charge power limit, the discharge power limit and zero when the discharge power limit is less than or equal to the charge power limit.