Passivity-based controller for a three phase synchronous rectifier

In this paper, the authors present a passivity-based control (PBC) law as nested-loop PBC to which they have added a sliding mode control (SMC) scheme for the design of the switching control sequence of a three phase boost-type rectifier. The controller presented here is indeed a modification of the original PBC scheme, which was necessary in order to eliminate bias components that appear in the input currents, which may cause possible saturation in the magnetic elements. Also, a justification for the PI external loop extensively used in implementations is given here. Using an experimental test bench, the authors have implemented the controller proposed and the results are shown.