Patent ID: 7117044
Filing Date: 2006-10-03
Classification: G05B

Abstract:
1. A method of controlling a multivariable alternative energy system comprising: monitoring a plurality of control variables of interest in the system; selecting one of the control variables for regulation control and regulating the selected control variable relative to a desired setpoint while continuing to monitor the remaining ones of the control variables; and selectively switching regulation control over to one of the remaining ones of the control variables and regulating that control variable relative to a desired setpoint if that control variable is detected as exceeding an allowed value; wherein the multivariable alternative energy system is configured to operate from an electrical energy storage device (EESD) and an alternative energy generation device (AEGD), the method further comprising coupling an EESD input of the system to a dc bus through a first power flow control device that controls power flow between the EESD and the dc bus, and coupling an AEGD input to the dc bus through a reverse blocking circuit configured to prevent current flow from the dc bus into the AEGD.