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For voltage-fed semi dual active bridge (VF-SDAB) DC-DC converter topology, modulation and control strategy in previous chapters, once the voltage is far away from the matched value, the ZVS range is limited and the peak current of leakage inductor will be relatively high. What is more, the current ripple becomes high especially at low input voltages. So in this chapter, a current-fed semi dual active bridge (CF-SDAB) DC-DC converter with symmetrical dual PWM and phase shifted control was proposed. All the power switches can achieve zero voltage switching (ZVS) and the output side diodes can achieve zero current switching (ZCS) naturally. The converter has lower conduction loss, lower peak current and higher efficiency. The typical operating modes were analyzed. The parameter optimal design criterion was given to achieve soft switching and circulation loss reduction. Simulation and experimental results for a 1 kW prototype were made to verify the effectiveness of the proposed topology employing the proposed control.

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Current-Fed Single Phase Semi-DAB DC-DC Converter with Dual PWM and Phase Shifted Control

  • 章节

  • 发表日期：

    2025年

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  • Deshang Sha,
  • Peisong Ma,
  • Jiankun Zhang

摘要

For voltage-fed semi dual active bridge (VF-SDAB) DC-DC converter topology, modulation and control strategy in previous chapters, once the voltage is far away from the matched value, the ZVS range is limited and the peak current of leakage inductor will be relatively high. What is more, the current ripple becomes high especially at low input voltages. So in this chapter, a current-fed semi dual active bridge (CF-SDAB) DC-DC converter with symmetrical dual PWM and phase shifted control was proposed. All the power switches can achieve zero voltage switching (ZVS) and the output side diodes can achieve zero current switching (ZCS) naturally. The converter has lower conduction loss, lower peak current and higher efficiency. The typical operating modes were analyzed. The parameter optimal design criterion was given to achieve soft switching and circulation loss reduction. Simulation and experimental results for a 1 kW prototype were made to verify the effectiveness of the proposed topology employing the proposed control.