Research of Isolated Three-Level AC-AC Converter

Abstract:

To be used for voltage regulator, An AC-AC direct converter with small bulk has been researched. The paper has proposed an isolated Cuk Three-Level AC-AC Converter. It is produced by applying TL AC switch unit in Isolated Cuk converter which is put forward by Slobodan Cuk. Because the two-level converter usually isn’t used in high voltage and heavy load situation, the paper proposed the cascaded type of isolated Cuk AC-AC converter. Besides, the operating principle and the control strategy of isolated Cuk Three-Level AC-AC Converter are investigated. Transient voltage feedback control is used in the converter and principle diagram of control circuit is given. By experiment results, the correctness of operating principle and control strategy of isolated Cuk Three-Level AC-AC Converter have been proved.

• Periodical: Advanced Materials Research (Volumes 354-355)
• Pages: 1400-1405
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.354-355.1400
• Online since: October 2011
• Authors: Ling Zhu, Lei Li
• Keywords: AC-AC Converter, CUK, Isolated, Three-Level, Transient Voltage Feedback Control

References

[1] Slobodan Cuk. "A New Zero-Ripple Switching DC-to-DC Converter and Integrated Magnetics"[J]. IEEE Transaction on magnetics, 2008,2.

DOI: 10.1109/pesc.1980.7089430

[2] S.K. Mazumder, R.K. Burra, R. Huang. "A Low-cost Single-stage Isolated Differential Cuk Inverter for Fuel-cell Application"[J]. PESC,2008,IEEE.

DOI: 10.1109/pesc.2008.4592659

[3] T. Tanitteerapan, S. Mori. "Simplified Input Current Waveshaping Technique by Using Inductor Voltage Sensing for High Power Factor Isolated Sepic, Cuk and Flyback Rectifiers"[J]. IEEE,2002.

DOI: 10.1109/apec.2002.989398

[4] Xin-bo Ruan. Three-Level DC/DC Converter and Soft-Switching Technique. Beijing: published by Science Publishing Company, 2006, 12. In Chinese.

[5] Xu Yang, Yong Shi. A Novel Deduction Approach of Switch Topologies and Multi-Level AC-AC Converters. Proceedings of the CSEE. 2004, 9. Vol.24, No9, p.87~91. In Chinese.

[6] Daolian Chen, He Xiang-ning, Hu Lei. Research on combined multilevel converter topologies. Proceedings of the CSEE. 2006,7. Vol.26, No.14, pp.41-45. In Chinese.

[7] Zhengwei Liu. High Power Density Isolated Cuk Converter. Power Electronics and Electrical Drive. Huazhong University of Science and Technology. 2004,4. In Chinese.

[8] Lei Li. Research on AC/AC Converters with High Frequency AC Link. Nanjing University of Aeronautics and Astronautics the Graduate School College of Automation Engineering. 2004, 10. In Chinese.