Synergetic control of a boost converter: theory and experimental verification

The proposal of new control techniques in the field of power electronics, especially for switching converters, for various applications is an interesting development. In this paper, a new approach for the synthesis of converter controllers, based on synergetic control theory is discussed. This method is completely analytical in its effort to synthesize the converter aggregated controllers based on fully nonlinear models of the converter. Such types of controllers provide asymptotic stability (steady-state) with respect to the required converter operating modes. Also, they are unaffected by load variations and show robustness to variation of converter parameters. In comparison with the available types of PI converters, synergetic controllers are far superior with regard to their dynamic characteristics. The theory of the approach is presented along with a detailed discussion of a synthesis example for a boost converter, the simulation and experimental results. The experimental results have been obtained from a laboratory prototype built for this purpose.