Sampled-Data Analysis of the Dual-Interleaved Boost Converter With Interphase Transformer

摘要: By exploiting the half-cycle symmetry in waveforms of dual-interleaved boost converter, a small-signal, sampled-data model is developed, which includes differential inductance interphase transformer and peak current-mode controller. The validated by Saber simulation experimental results from 10-kW prototype. Significant differences are seen dynamic characteristics between two operating modes: duty ratio D ≤ 0.5 or >; 0.5. For 0.5, slope compensation needed to prevent subharmonic instability over an increasing range when input inductor increases beyond 4.0. Furthermore, with control-to-output transfer function becomes sensitive ratio, whereas it not Also for reduces as increased.