A Hybrid Optimal Modulation Strategy for Dual-Side Asymmetric Duty Cycles in a Dual-Active-Bridge Converter.
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| Title: | A Hybrid Optimal Modulation Strategy for Dual-Side Asymmetric Duty Cycles in a Dual-Active-Bridge Converter. |
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| Authors: | Sun, Biaoguang1,2 (AUTHOR), Liu, Zhenfeng1,2 (AUTHOR) liuzhenfeng@home.hpu.edu.cn |
| Source: | Energies (19961073). Mar2026, Vol. 19 Issue 5, p1365. 18p. |
| Subject Terms: | *Phase modulation, *Voltage control, *Power electronics, *Electric current converters, *Modulation theory |
| Abstract: | To address the issues of excessive current stress and the power dead zone associated with conventional phase-shift modulation in dual-active-bridge (DAB) converters, a hybrid optimized modulation strategy based on dual-side asymmetric duty modulation (ADM) is proposed. The proposed strategy aims to minimize the peak-to-peak current stress by introducing two distinct operating modes of the converter. A dynamic compensation mechanism based on mode switching is developed, enabling a coordinated dual-mode modulation to achieve minimum peak-to-peak current stress over the full power operating range. In addition, a virtual voltage control scheme is incorporated to enhance the dynamic response and stability of the system. Finally, experimental results obtained from a laboratory prototype verify that the proposed strategy effectively reduces the peak-to-peak current stress while significantly improving the dynamic performance of the DAB converter. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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