A novel modelling method for multi-state boost converters

The conventional modelling methods for the multi-state boost converter are usually restricted by its complicated switching behaviours. This paper presents a novel mathematical modelling method for the multi-state boost converter from a viewpoint of system energy characteristics. The generalized concepts of system energy parameters of dc/dc converters are introduced to the modelling process, which deduce the expressions of system model parameters for the multi-state boost converter consequently. The new 2^nd order functions are obtained to describe the converter. With the applications to the examples, the proposed method shows the advantages of high convenience and practicability to the multi-state boost converters. Both the model simulation and experimental results are provided to support the theoretical analysis