Feedback Structures for Vapor Compression Cycle Systems

This paper explores the controllability and interconnectedness of input-output relationships in vapor compression cycles. The magnitude of physical coupling between different outputs used in the feedback loop are examined. It is shown that an alternative to the conventional feedback configuration found in the literature has distinct benefits that allow for improved system regulation using simple classical control techniques. A relative gain array analysis technique is shown to be an effective method for identifying proper feedback configurations that maximize the controllability of vapor compression systems.