Answers are grounded in this paper and cite their sources.
Split-battery converters based on cascaded H-bridges (CHBs) are gaining popularity due to their excellent physical modularity. During operation, however, the batteries experience substantial current ripple. Conventional ripple-current reduction methods rely on bulky passive components or complicated control. This article presents modulation and common-mode voltage injection methods for cascaded double-H-bridge converters (CHB2). The control methods directly mitigate the source of the ripple current-the fluctuating arm power-by exploiting the parallel interconnection across the CHB2arms. In the lab setup, the proposed solution approximately halves the battery current ripple compared to the CHB counterpart. Finally, this article studies component sizing and limitations of the proposed solution.
No takes yet. Share an insight, caveat, or question.
Li et al. (2020) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: