Common Mode EMI Reduction Control Strategy for Interleaved Converters

Isolated DC/DC converters have been adopted in numerous applications because of their advantages in efficiency, reliability, total cost, and electrical isolation. Interleaving converters can achieve the aforementioned criteria while lowering differential mode (DM) noise and therefore filter weight and volume, which are limiting factors in all-electric aircraft (AEA). The switching of the converters, on the other hand, produces common mode (CM) noise. As a result, the emphasis of this work is on the impact of interleaving forward converters on possible CM noise reduction via pulse alignment. This paper discusses theory as well as potential practical limits. The data revealed that the rise and fall duration and the number of interleaved converters have an influence on CM noise reduction. To demonstrate the concept of this interleaving method, simulation results, and experimental setup are used.