Research on key technology of N-phase interleaved parallel DC/DC converter

The research and application of interleaved parallel high-capacity DC/DC converters have become increasingly important as core equipment for improving energy conversion efficiency and system stability. In response to the lack of parameter design methods for N -phase interleaved parallel DC/DC converters, this article firstly explains the working principle of interleaved parallel DC/DC converters. Then, the core parameter calculation method for N-phase interleaved parallel DC/DC converters is derived. Finally, in response to the specific requirements of a certain project, the parameter design of a 630 kW three-phase interleaved parallel DC/DC converter is completed and simulated based on the proposed parameter design method. The results show that the current ripple, voltage ripple and other parameters obtained based on the proposed method are basically consistent with the simulation results, which verifies the accuracy of the proposed parameter design method and provides reference for the design of subsequent high-capacity interleaved parallel DC/DC converter products.