A New High Step-Up DC-DC Converter with Soft Switching and High Efficiency

Document Type : Original Article

Authors

1 PhD, Department of Electrical Engineering, Technical and Vocational University (TVU), Tehran, Iran

2 PhD Student, Department of Electrical Engineering, technical and Vocational University (TVU), Tehran, Iran.

3 M.Sc, Department of Electrical Engineering, Technical and Vocational University (TVU), Tehran, Iran

Abstract

This paper presents a high step-up DC-DC converter. The converter had a simple structure and without adding an auxiliary switch, soft switching condition was provided in the converter. Due to the fact that a switch was not added to the converter, there was no need to design a new control circuit for this converter and the basic control circuit structure was suitable for this converter. In the proposed converter, with the minimum number of auxiliary elements soft switching condition provided reduced losses and increased efficiency in addition to having a simple structure. Soft switching condition was provided under zero current switching (ZCS) when the switch was turned on and under zero voltage switching (ZVS) when the switch was turned off. The voltage stress on the switch was at a lower level than the output voltage of the converter which the switch can use with low voltage. In addition, not much current stress was imposed on the converter, which did not require a very high current switch. The proposed converter was completely analyzed and in order to prove the theoretical analysis, the converter was simulated at a power of 500 watts and full load, the efficiency obtained was approximately 97%.

Keywords

Main Subjects

References

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Karafan Quarterly Scientific Journal
Volume 19, Issue 3 - Serial Number 59
Technical and Engineering
December 2022
Pages 333-355

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History

  • Receive Date: 11 June 2022
  • Revise Date: 25 July 2022
  • Accept Date: 25 October 2022

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