Research of an interleaved boost converter with four interleaved boost convert cells

Boost converters are widely used in the low-to-high DC/DC application and power-factor-corrected circuits. Based on the interleaved boost converter with coupled inductors, a converter consisting of four interleaved boost converter cells is proposed in this paper. The boost converter cells can share the input current, so this prototype circuit can be designed to have small input current ripple. And when using this method, output voltage ripple can also be reduced. The operating principle is presented. The steady state performance of the boost converter is investigation by a saber simulation. A 2.5 kW boost converter with four interleaved boost convert cells has been realized and successfully tested in the laboratory. The comparison with the interleaved boost converters with coupled inductors is also given.