Robust Nonlinear Controllers for the Boost Converters with Constant Power Loads

The boost converter feeding a constant power load (CPL) is a non-minimum phase system that is prone to the destabilizing effects of the negative incremental resistance of the CPL, presenting a major challenge in the design of stabilizing controllers. In this note, three different types of stabilizing controllers to regulate the output of the DC-DC boost converter driving a CPL are discussed and compared through simulations.