Bi-directional regulator/converter with buck/boost by fuzzy logic control

This application relates to a controller for managing the DC-DC Converter and Power Management Unit ("Converter") previously disclosed by Sustainable Energy Technologies ("SET") in U.S. Provisional Patent Application Serial No. 60/221,596, filed Jul. 28, 2000, U.S. patent application Ser. No. 09/917,256, filed Jul. 27, 2001, and International Application No. PCT/US01/23681, filed Jul. 27, 2001, the contents of which are hereby incorporated by reference. It also relates to a controller for managing other DC-DC converters, as well as AC-DC or DC-AC inverters. An interface between software and hardware, as well as a fuzzy logic control algorithm, for controlling a DC-DC converter or an AC-DC or DC-AC inverter are provided. A control circuit receives commands from a control logic to operate a converter or inverter in various operation modes. Control software inputs can be translated into signals to operate the converter or inverter. Control variables in the control software can be configured to operate under various control modes. If the converter or inverter cannot simultaneously meet the demands placed on two or more variables, the control logic can use prioritization to choose a more important constraint.