A Novel Periodic Energy Control for Nonisolated DC-DC Converters With Overshoot Suppression

Tianlu Ma, Chaoqiang Jiang, Xiaosheng Wang, Jingchun Xiang, Liping Mo, Kwok Tong Chau

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

A novel periodic energy control (PEC) strategy for dc-dc converters is proposed in this letter, where the port nearest to the load is selected as the energy control target, considering the loss of switching and passive components. A simplified energy calculation method is derived to replace the integration methods in terms of the possible error during successive integral calculations, meanwhile reducing the computational burden. Furthermore, PEC is extended to other nonisolated dc-dc converters. Finally, the high accuracy of the simplified energy calculation is proven in simulations, and a 100-kHz synchronous buck converter is established to verify the proposed PEC. During the reference voltage stepping, the inductor saturation and overshoot occur in proportional-integral control by tuning the duty cycle, whereas the output voltage can track the reference within 1.4 ms without any overshoot in single-loop PEC, which illustrates its advantage in overshoot suppression. Also, dual-loop PEC shares the same conclusion.

Original languageEnglish
Pages (from-to)12325-12330
Number of pages6
JournalIEEE Transactions on Power Electronics
Volume38
Issue number10
DOIs
Publication statusPublished - 1 Oct 2023

Keywords

  • dc-dc converters
  • overshoot
  • Periodic energy control (PEC)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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