Abstract
To reduce the increasing current stress caused by the voltage mismatch between the primary and secondary sides of a dual active bridge (DAB) DC-DC converter with dual phase-shift (DPS) modulation, an improved dual phase-shift(IDPS) modulation mode based on current stress optimization is proposed in this paper, which changes the constraint relationship between the internal and external phase-shift angles without adding new phase-shift control variables. The working characteristics of IDPS modulation are analyzed, and a mathematical model of current and power is established. The optimization and control method for current stress is put forward, and the current stress and flowback power characteristics are analyzed in comparison with the traditional DPS modulation mode. Finally, an experimental platform was built, and it was verified that compared with the traditional DPS modulation mode, the proposed IDPS modulation mode can reduce the current stress and flowback power under light and medium loads.
| Translated title of the contribution | Improved Dual Phase-shift Modulation Mode Based on Current Stress Optimization of Dual Active Bridge DC-DC Converter |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 35-44 |
| Number of pages | 10 |
| Journal | Journal of Power Supply |
| Volume | 21 |
| Issue number | 1 |
| DOIs | |
| State | Published - 30 Jan 2023 |
| Externally published | Yes |
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