Analysis and Design of a Family of Two-Level PWM Plus Phase-Shift-Modulated DC-DC Converters

Shouxiang Li, Kang Xiangli*, Keyue Ma Smedley

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

A comprehensive analysis for a family of two-level pulsewidth modulation plus phase-shift (PPS)-modulated-isolated-bidirectional dc-dc converters is presented in this paper. Compared with the traditional phase-shift control, the PPS control features reduced current stresses, reduced conduction losses, guaranteed zero-voltage switching (ZVS) operation, and wide conversion-ratio variation range. In this paper, all eight operation modes are revealed, and then the unified solution of the power transmission capability for each mode is proposed, applicable for any two-level PPS converters. Based on the unified solution, component stresses and ZVS operation are analyzed to assist component selection. Most importantly, the control maps for three different combinations of the two-level PPS converters are proposed, to assist converter operation and design in the low-circulating-current region. In the control map, a circuit parameter k is proposed and its upper limit is found, providing a design limit to select switching frequency, leakage inductance, turns ratio, and power level. A 29-67 V/380 V prototype - the combination of group C plus group A - rated at 100-1000 W was built. The analysis is verified by both simulation and experimental results.

Original languageEnglish
Pages (from-to)4650-4660
Number of pages11
JournalIEEE Transactions on Industrial Electronics
Volume65
Issue number6
DOIs
Publication statusPublished - Jun 2018
Externally publishedYes

Keywords

  • Isolated bidirectional DC-DC converter (IBDC)
  • pulsewidth modulation plus phase-shift (PPS) control
  • unified solution

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