Boost and buck-boost power converters control via sliding modes using dynamic sliding manifold

Nonminimum phase tracking control is studied for boost and buck-boost power converters. A sliding mode control algorithm is developed to directly track a causal voltage tracking profile given by an exogenous system. The approximate causal output nonminimum phase tracking in nonlinear boost and buck-boost power converters is addressed asymptotically via sliding mode control using a dynamic sliding manifold (DSM). Use of DSM allows the stabilization of the internal dynamics when the output tracking error tends asymptotically to zero in the sliding mode. The sliding mode controller with DSM links features of conventional sliding mode control (insensitivity to matched nonlinearities and disturbances) and a conventional dynamic compensator (accommodation to unmatched disturbances). Numerical examples demonstrate the effectiveness of the sliding mode controller.