Interleaving of parallel dc-dc converters using sliding mode control

This paper introduces a new approach to interleaving parallel converters using a multi-input sliding-mode control The control is based on sliding surfaces which naturally provide interleaving between cells of a modular power supply system. Moreover, the sliding surfaces provide equal current distribution among the converter modules and a regulated voltage in the output. The technique is also effective a there is at varying number of cells in the system, such as the failure of one o more cells. Simulation and experimental results are presented for a parallel structure based on three Buck converters.