Arabian Journal for Science and Engineering

, Volume 43, Issue 6, pp 2713–2723 | Cite as

A New High-Voltage Gain Non-Isolated Zero-Current-Switching Bidirectional DC–DC Converter

  • Rajesh Thumma
  • Veera Venkata Subrahmanya Kumar BhajanaEmail author
  • Pavel Drabek
  • Martin Jara
Research Article - Electrical Engineering


This paper deals with a new high-voltage-gain zero-current switching bidirectional DC–DC converter for electric vehicles. The hard-switched non-isolated bidirectional converter integrated with auxiliary active switches and resonant elements were designed to attain the zero-current switching turn-off operation in the main IGBTs. This converter has dual characteristics as battery charge (buck) mode and discharge (boost) mode. By individual mode, all the active switches operate under zero-current switching turn-off operation for the minimized turn-off losses. The proposed converter has high voltage gain with reduced turn-off losses when operating in discharge mode and has low output voltage conversion in charge mode. The topology described with the aid of theoretical waveforms were tested using a laboratory prototype 70/300 V, 800 W system functioned under 50 kHz operating frequency.


Zero-current switching Charging mode Discharging mode Bidirectional DC–DC Electric vehicle applications 



Voltage of resonant capacitor \(C_{\mathrm{q}}\)


Current of the main IGBT\(S_{1}\)


Current of the auxiliary IGBT\(S_{b}\)


Current of the main IGBT\({ S}_{3}\)


Current of the main IGBT\({ S}_{4}\)


Auxiliary inductor


Auxiliary capacitor




Output voltage


Maximum input inductor current


Output power


Resonant frequency




Source voltage (boost mode)


Source voltage (buck mode)


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Copyright information

© King Fahd University of Petroleum & Minerals 2017

Authors and Affiliations

  • Rajesh Thumma
    • 1
  • Veera Venkata Subrahmanya Kumar Bhajana
    • 1
    • 2
    Email author
  • Pavel Drabek
    • 2
  • Martin Jara
    • 2
  1. 1.School of Electronics EngineeringKIIT UniversityBhubaneswarIndia
  2. 2.Regional Innovation Centre for Electrical EngineeringUniversity of West BohemiaPilsenCzech Republic

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