621.314

two-section resonant inverter, zero-voltage switching power, phase control, power, efficiency.

Analysis of two-section resonant DC-to-DC converter with phase power control is carried out in this paper. Two-section converter is considered as a boundary case of the multi-section converter with only one controlled section and other uncontrolled sections. The converter sections are parallel resonant half-bridge voltage inverters with a common resonant capacitor connected to the load through a matching transformer, center-tapped rectifier and smoothing filter. One of the sections is the reference, relative to which the phase shift of the output pulses of the other section is adjusted. The switching frequency of the converter is constant, which improves its electromagnetic compatibility. Analysis is carried out by the fundamental harmonic approximation method. Analytical expressions for voltage and current phasors in both sections of the converters have been established. The dependence of the converter power on the phase shift between the pulses of the half-bridge inverter sections was obtained. The dependence of the efficiency of the converter on the power was analyzed. It is shown that the efficiency slightly decreases when the power is reduced in a wide range of powers and only at powers less than 10% of full load power it drops sharply. The problems of operation of section transistor switches in their zero-voltage switching mode is considered. Verification of the conducted analysis was carried out by simulation of the converter circuit using the PSIM program for modeling power electronics devices. The simulation results are in a good agreement with the analysis results.

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18. Zaki M., Bonsall A., Batarseh I., “Performance Characteristics for the Series Parallel Resonant Converter,” Proc. Southcon ’94, 1994, p. 573–577.
19. Bhat A. K. S., “Analysis, Optimization and Design of a Series Parallel Resonant Converter,” Proc. IEEE APEC ’90, 1990, p. 155–164.
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22. Lupenko A. Step-continuous phase power control of multi-section resonant inverter. Computational problems of electrical engineering. Vol. 10. No. 2. 2020. P. 7–12.
23. Kazimierczuk M. K. Phase-controlled series-parallel resonant converter. IEEE Transactions on Power Electronics. Vol. 8. No. 3. 1993. Р. 309–319.
24. Kazimierczuk M. K., Czarkowski D. Resonant power converters, 2nd Edition. John Wiley & Sons. 2011. 632 p.
25. Gilbert A. J., Bingham C. M., Stone D. A., Foster M. P. Normalized Analysis and Design of LCC Resonant Converters. IEEE Transactions on Power Electronics December 2007. 22 (6): 2386 – 240. Doi: 10.1109/ TPEL.2007.909243.

1. Vorperian V. and Cuk S. “A complete DC analysis of the series resonant converter,” 1982 IEEE Power Electronics Specialists conference, Cambridge, MA, USA, 1982, p. 85–100. Doi: 10.1109/PESC. 1982.7072398.
2. Steigerwald R. I. A comparison of half-bridge resonant converter topologies. IEEE Transactions on Power Electronics. Vol. 3. P. 174–182. Apr. 1988.
3. Chen Y., Liu Y. F. Latest advances of LLC converters in high current, fast dynamic response, and wide voltage range applications. CPSS Transactions on Power Electronics and Applications. Volume 2. Issue 1. 2017. P. 59–67. Doi: 10.24295/CPSSTPEA.2017.00007.
4. Musavi F., Craciun M., Gautam S., Eberle W., Dunford W. “A Novel Multi-resonant DC-DC Converter with Wide Output-Voltage Range Battery Charging Applications” IEEE Transactions on Power Electronics. Vol. 28. No. 12. P. 5437–5445. 2013. Doi: 10.1109/TPEL.2013.2241792.
5. Brañas C., Viera J. C., Azcondo F. J., Casanueva R., Anseán D. “Multiphase resonant converter with output current multiplier for battery charger applications” Proceedings of the 42nd Annual Conference of the Industrial Electronics Society (IECON), Florence, 2016, 5639–5644. Doi: 10.1109/IECON.2016.7794146.
6. Pinuela M., Yates D.C., S. Lucyszyn,  P. Mitcheson. “Maximizing DC-to-Load Efficiency for Inductive Power Transfer” IEEE Transactions on Power Electronics. Vol. 28. No. 5. P. 2437–2447. May 2013. Doi: 10.1109/TPEL.2012.2215887.
7. Wang T. W., Lin T. T. “Wireless Power Transmission on Biomedical Applications”. In book: Microwave Technologies, Publisher: IntechOpen. March 2022. P. 18. Doi: 10.5772/intechopen.103029.
8. Wang H., Zanchetta P., Clare J., Ji C. “Modelling and control of a zero current switching high-voltage resonant converter power supply for radio frequency sources” IEEE Transactions on Power Electronics. Vol. 5. No. 4. P. 401–409. 2012. Doi: 10.1049/iet-pel.2010.0400.
9. Ji C., Zanchetta P., Carastro F., Clare J. C. “Repetitive Control for High-Performance Resonant Pulsed Power Supply in Radio Frequency Applications”. IEEE Transactions on Industry Applications. Vol. 50. No. 4. 2014. P. 2660–2670. Doi: 10.1109/TIA.2013.2292997.
10. Shrivastava A., Singh B..LLC Series Resonant Converter Based LED Lamp Driver with ZVS / 2012 IEEE Fifth Power India Conference, Official. URL: http://ieeexplore.ieee.org/document/6479553/.
11. Jagadeesh R., Vishwanathan N., Porpandiselvi S. An Efficient Parallel Resonant Converter for LED Lighting / Proceedings of the National Power Systems Conference (NPSC) – 2018, India 5 p.
12. Dobi A. H. M., Sahid M. R., Sutikno T. Overview of Soft-Switching DC-DC Converters. International Journal of Power Electronics and Drive System (IJPEDS). Vol. 9. No. 4. December 2018. P. 2006–2018. Doi: 10.11591/ijpeds.v9.i4.pp2006-2018.
13. Ashique R., Salam Z., Maruf M., Shihavuddin A., Islam M.l., Rahman M., Kotsampopoulos P., Fayek H. A Comparative Analysis of Soft Switching Techniques in Reducing the Energy Loss and Improving the Soft Switching Range in Power Converters. March 2022. Electronics. 11 (7) 20. P. 1062. Doi: 10.3390/ electronics11071062.
14. Vorperian V. and Cuk S. “A Complete DC Analysis of the Series Resonant Converter,” Proc. IEEE PESC’82, 1982.
15. Yang J. T. and Lee F. C. “Computer Aided Design and Analysis of Series Resonant Converters,” Proc. IEEE IAS ’87, 1987.
16. Liu R., Batarseh I., Lee C. Q. “Comparison of Capacitively and Inductively Coupled Parallel Resonant Converters,” IEEE Trans. onPower Electronics. 1993. P. 445–454. Vol. 8. Issue 4.
17. Kang Y. G., Upadhyay A. K., Stephens D. “Analysis and Design of a Half Bridge Parallel Resonant Converter Operating Above Resonance,” Proc.IEEE IAS ’98, 1998, p. 827–836.
18. Zaki M., Bonsall A., Batarseh I., “Performance Characteristics for the Series Parallel Resonant Converter,” Proc. Southcon ’94, 1994, p. 573–577.
19. Bhat A. K. S., “Analysis, Optimization and Design of a Series Parallel Resonant Converter,” Proc. IEEE APEC ’90, 1990, p. 155–164.
20. Salem M., Jusoh A., Idris N. R. N., Sutikno T., Buswig Y. M. Y. “Phase-shifted Series Resonant Converter with Zero Voltage Switching Turn-on and Variable Frequency Control”. International Journal of Power Electronics and Drive Systems. Vol. 8. No. 3. 2017. P. 1184–1192. Doi: 10.1159/ijpeds.v8s3.pp1184-1192.
21. Branas C., Azcondo F.J., Casanueva R. “A generalized study of multiphase parallel resonant inverters for high-power applications”,  IEEE Transactions on Circuits and Systems I. 2008. Vol. 55. No. 7, P. 2128–2138,
22. Lupenko A. Step-continuous phase power control of multi-section resonant inverter. Computational problems of electrical engineering. Vol. 10. No. 2. 2020. P. 7–12.
23. Kazimierczuk M. K. Phase-controlled series-parallel resonant converter. IEEE Transactions on Power Electronics. Vol. 8. No. 3. 1993. Р. 309–319.
24. Kazimierczuk M. K., Czarkowski D. Resonant power converters, 2nd Edition. John Wiley & Sons. 2011. 632 p.
25. Gilbert A. J., Bingham C. M., Stone D. A., Foster M. P. Normalized Analysis and Design of LCC Resonant Converters. IEEE Transactions on Power Electronics December 2007. 22 (6): 2386 – 240. Doi: 10.1109/ TPEL.2007.909243.