Robust optimized design of interleaved parallel converters subtitle

Interleaved parallel boost converters, due to the topology that can reduce input current ripple, are widely used in electric propulsion aircraft powered by fuel cells. However, during the flight of an aircraft, there are often drastic changes in working conditions such as temperature, causing severe fluctuations in the output voltage of fuel cells and parameter drift in converter components, leading to fluctuations in converter efficiency. In response to this issue, this paper presents a robust optimization design for interleaved parallel boost converters. Firstly, an energy loss simulation model for a 1 kW interleaved parallel boost converter is established. Secondly, combining with the Taguchi method, the design parameter combination with optimal robustness is determined. Finally, an experimental prototype is built to validate the optimization results. The verification results indicate that the optimized design parameters reduce the average efficiency fluctuation at various power points caused by external working conditions by 51.92%. Moreover, under full load conditions, the converter efficiency is improved by 1.01%.