Smart Structures and Systems

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

A new lossless snubber for DC-DC converters with energy transfer capability

  • Esfahani, Shabnam Nasr (Department of Electrical Engineering, Arak Branch, Islamic Azad University) ;
  • Delshad, Majid (Department of Electrical Engineering, Isfahan(Khorasgan) Branch, Islamic Azad University) ;
  • Tavakoli, Mohhamad Bagher (Department of Electrical Engineering, Arak Branch, Islamic Azad University)
  • Received : 2019.06.03
  • Accepted : 2019.08.08
  • Published : 2020.03.25
⟨ Previous Next ⟩

Abstract

In this paper, a new passive lossless snubber circuit with energy transfer capability is proposed. The proposed lossless snubber circuit provides Zero-Current Switching (ZCS) condition for turn-on instants and Zero-Voltage Switching (ZVS) condition for turn-off instants. In addition, its diodes operate under soft switching condition. Therefore, no significant switching losses occur in the converter. Since the energy of the snubber circuit is transferred to the output, there are no significant conduction losses. The proposed snubber circuit can be applied on isolated and non-isolated converters. To verify the operation of the snubber circuit, a boost converter using the proposed snubber is implemented at 70W. Also, the measured conducted Efficiency Electromagnetic Interference (EMI) of the proposed boost converter and conventional ones are presented which show the effects of proposed snubber on EMI reduction. The experimental results confirm the presented theoretical analysis.

Keywords

References

  1. Acik, A. and Cadirci, I. (2002), "Active clamped ZVS forward converter with soft-switched synchronous rectifier", Turkish J. Elec. Eng., 10, 473-491.
  2. Amini, M.R. and Farzanehfard, H. (2009), "Novel family of PWM soft-single-switched DC-DC converters with coupled inductors", IEEE Transact. Indust. Electron., 56, 2108-2114. 10.1109/TIE.2009.2016509
  3. Ariyan, A. and Yazdani, M.R. (2017), "Zero-Voltage-Transition Buck Converter for High Step-Down DC-DC Conversion with Low EMI", J. Power Electron., 17, 1445-1453. https://doi.org/10.6113/JPE.2017.17.6.1445
  4. Bilgin, B., Cadirci, I., Ergul, R. and Ermis, M. (2003), "Resonant Demagnetization PWM Forward Converter", Turkish J. Electro. Eng., 11, 61-74.
  5. Igarashi, A. (2018), "Logic circuit design for high-speed computing of dynamic response in real-time hybrid simulation using FPGA-based system", Smart Struct. Syst., Int. J., 14, 1131-1150. https://doi.org/10.12989/sss.2014.14.6.1131
  6. Khalilian, M., Adib, E. and Farzanehfard, H. (2014), "Familiy of single-switch soft-switching pulse-width modulation DC-DC converters with reduced switch stress", IET Power Electron., 7, 2182-2189. 10.1049/iet-pel.2013.0452
  7. Li, R.T.H. and Chung, H.S.-h. (2010), "A passive lossless snubber cell with minimum stress and wide soft-switching range", IEEE Transact. Power Electron., 25, 1725-1738. 10.1109/TPEL.2010.2042074
  8. Li, R.T.H. and Ho, C.N.M. (2015), "An active snubber cell for Nphase interleaved dc-dc converters", IEEE J. Emerg. Select. Topics Power Electron., 4(2), 344-351. 10.1109/PEAC.2014.7037988
  9. Maghareh, A., Dyke, Sh.J., Prakash, A. and Rhoads, J.F. (2018), "Establishing a stability switch criterion for effective implementation of real-time hybrid simulation", Smart Struct. Syst., Int. J., 14, 1221-1245. https://doi.org/10.12989/sss.2014.14.6.1221
  10. Mahendran, V. and Ramabadran, R. (2017), "Implementation of zero voltage switched SEPIC/ZETA bidirectional converter for low power applications using FPGA", Turkish J. Electron. Eng., 25, 319-336.
  11. Mohan, N., Undeland, T.M. and Robbins, W.P. (2003), Power Electronics, (3rd Ed.), Wiley, New York, NY, USA.
  12. Mohammadi, M. and Ordonez, M. (2015), "Flyback lossless passive snubber", Proceedings of 2015 IEEE Energy Conversion Congress and Exposition (ECCE), pp. 5896-5901. 10.1109/ECCE.2015.7310487
  13. Mohammadi, M., Adib, E. and Yazdani, M.R. (2015), "Family of soft-switching single-switch PWM converters with lossless passive snubber", IEEE Transact. Indust. Electron., 62, 3473-3481. 10.1109/TIE.2014.2371436
  14. Salehi, S., Vahidi, B., Milimonfared, J., Taheri, M. and Moradi, H. (2015), "Analysis and design of an interleaved current-fed high step-up quasi-resonant DC-DC converter for fuel cell applications", Turkish J. Elec. Eng., 23, 2182-2196.
  15. Wu, T.F., Lai, Y.Sh., Hungand, J.Ch. and Chen, Y.M. (2008), "Boost converter with coupled inductors and buck-boost type of active clamp", IEEE Transact. Indust. Electron., 55, 154-162. 10.1109/TIE.2007.903925
  16. Yazdani, M.R., Rahmani, S. and Mohammadi, M. (2015), "A ZCT double-ended flyback converter with low EMI", J. Pow. Electron., 15, 602-609. https://doi.org/10.6113/JPE.2015.15.3.602