Design, analysis and application of high set-up ZVT DC–DC converter with direct power transfer

Şahin Y., Tınğ N. S.

Sadhana - Academy Proceedings in Engineering Sciences, cilt.43, sa.10, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 43 Sayı: 10
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1007/s12046-018-0938-3
  • Dergi Adı: Sadhana - Academy Proceedings in Engineering Sciences
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: active snubber cell, hard switching, soft switching, Zero voltage transition
  • Erzincan Binali Yıldırım Üniversitesi Adresli: Evet

Özet

© 2018, Indian Academy of Sciences.In this paper, a new snubber cell for soft switched high set-up DC–DC converters is introduced. The main switch is turned on by zero-voltage transition and turned off by zero-voltage switching (ZVS). The main diode is turned on by ZVS and turned off by zero-current switching. Besides, all auxiliary semiconductor devices are soft switched. Any semiconductor device does not expose the additional current or voltage stress. The new snubber transfers some of the circulation energy to the output side when it ensures soft switching for main semiconductor devices. Thus, the current stress of auxiliary switch is significantly reduced. Besides, the total efficiency of converter is high due to the direct power transfer feature of new converter. A theoretical and mathematical analysis of the new converter is presented, and also verified with experimental set-up at 500 W and 100 kHz. Finally, the overall efficiency of new converter is 97.4% at nominal output power.