Interleaved Boost Converter Efficiency and Power Density Model for Active and Passive Component Design

Abstract:
Interleaved boost converter (IBC) is used in hydrogen vehicle and solar applications. This converter requires a precise model. However, some expressions remain unknown in the state of the art, particularly for discontinuous conduction mode. In this article, the sizing and loss equations for switches, diodes and inductors are described for continuous and discontinuous conduction modes. A simplified method using component libraries for optimal IBC sizing is proposed. The design of a 1.6 kW IBC is carried out. The resulting prototype meets the specifications.