Keywords
output voltage ripple
state space averaging method перетворювач Luo з позитивним виходом (PO Luo converter)
пульсації вихідної напруги
метод усереднення в просторі станів
How to Cite
Abstract
The processes in non-inverting DC-DC buck-boost converters were investigated: using the elementary topology and the positive output Luo topology (PO Luo converter). Using the averaging method based on Lagrange theorems, analytical models and expressions have been developed for calculating and analyzing the average, pulsating components of processes in converters, including output voltage pulsations in continuous and discontinuous conduction modes across the entire switching range. The developed analytical models allow us to refine and simplify the calculation of processes in converters relative to existing calculation methods. Analytical conditions have been developed that allow predicting the degree of reduction in output voltage ripple in the PO Luo converter compared to the base circuit. Analytical and graphical dependence on the limiting values of the parameters of PO Luo converter in full commutation range between CCM and DCM modes was obtained, which makes it possible to reasonably choose its parameters at the design stage. The results of simulation modeling of processes in the PO Luo converter confirmed the correctness of the developed analytical relationships. The discrepancy between the results of process calculations according to the developed analytical models and simulation modeling does not exceed 1%. References 12, figures 6, tables 3.
References
1. Luo F.L., Ye H. Power Electronics. Advanced Conversion Technologies, Second Edition. Taylor & Francis, 2020. 707 p.
2. Siddharthan N., Balasubramanian B. Performance evaluation of SEPIC, Luo and ZETA converter. International Journal of Power Electronics and Drive Systems (IJPEDS). 2019. Vol. 10. No 1. Pp. 374-380. DOI: https://doi.org/10.11591/ijpeds.v10.i1.pp374-380.
3. Forouzesh M., Siwakoti Y.P., Gorji S.A., Blaabjerg F., Lehman B. Step-up DC–DC converters: a comprehensive review of voltage-boosting techniques, topologies, and applications. IEEE Transactions on Power Electronics. 2017. Vol. 32. No 12. Pp. 9143-9178. DOI: https://doi.org/10.1109/TPEL.2017.2652318.
4. Ibrahim A. Performance evaluation of PI controller for positive output Luo converter. International Journal of Power Electronics and Drive System. 2020. Vol. 11. No 4. Pp. 1816-1825. DOI: https://doi.org/10.11591/ijpeds.v11.i4.pp1816-1825.
5. Bright S.J.V., Ramkumar S., Anand H. Positive output elementary Luo converter for fixed-frequency ZVS operation. Bulletin of the Polish Academy of Sciences Technical Sciences. 2017. Vol. 65. No 2. Pp. 255-262. DOI: https://doi.org/10.1515/bpasts-2017-0029.
6. Banaei M.R., Bonab H.A.F. A High Efficiency Nonisolated Buck–Boost Converter Based on ZETA Converter. IEEE Transactions on Industrial Electronics. 2020. Vol. 67. No 3. Pp. 1991-1998. DOI: https://doi.org/10.1109/TIE.2019.2902785.
7. Bindi M., Corti F., Grasso F., Luchetta A., Manetti S., Piccirilli M.C. Failure Prevention in DC–DC Converters: Theoretical Approach and Experimental Application on a Zeta Converter. IEEE Transactions on Industrial Electronics. 2023. Vol. 70. No 1. Pp. 930-939. DOI: https://doi.org/10.1109/TIE.2022.3153827.
8. Oommen S., Ballaji A., Ankaiah B., Ananda M.H. Zeta Converter Simulation for Continuous Current Mode Operation. International Journal of Advanced Research in Engineering and Technology. 2019. Vol 10. No1. Pp. 243-248.
9. Zhuikov V.Ya., Denisyuk S.P., Melnichuk G.V. Modeling of systems with power converters with cyclically changing parameters. Kyiv: Nash Format, 2018. 165 p. (Ukr)
10. Rudenko Yu.V. Mode of averaging of pulse DC converter model. Tekhnichna Elektrodynamіka. 2017. No 3. Pp. 42-48. DOI: https://doi.org/10.15407/techned2017.03.042. (Rus)
11. Rudenko Yu.V., Martynov D.V. Calculation of the buck-boost dc converter taking into account the operation modes by averaging method. Pratsi Instytutu elektrodynamiky Natsionalnoi Akademii Nauk Ukrainy. 2025. Vyp/ 70. Pp. 58-64. DOI: https://doi.org/10.15407/publishing2025.70.058. (Ukr)
12. Rudenko Yu.V. Calculation of DC converters in discontinuous conduction mode using the averaging method based on Lagrange theorem. Tekhnichna Elektrodynamika. 2023. No 4. Pp. 19-25. DOI: https://doi.org/10.15407/techned2023.04.19. (Ukr)
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