DESIGN AND ANALYSIS OF A FLYBACK CONVERTER WITH IMPROVED SNUBBER CELLS

Year 2020, Volume: 38 Issue: 4, 2205 - 2216, 05.10.2021

Umit Tanrıkulu Erdem Akboy Burak Akın

Abstract

In today’s industrial systems, especially at low power applications, since they have simple structure and easy control, flyback converters are preferred. Furthermore, with suitable for multiple output levels on one device, be able to respond to different power demands, simple installation, eligibility of cost requirements, isolation between the inputs and outputs of the circuit structure, compliance with default safety standards and such advantages have been preferred. Although they have these advantages, flybacks suffers from leakage inductances. They cause high voltage spikes and extra losses. In our circuit model based on flyback topology, contribute to work on the circuit by eliminating the losses as much as possible, for feeding devices that require different voltage values with a single power supply, and increase efficiency by reducing voltage stress on the semiconductors and such improvements have been made. On the basis of these improvements, primarily classical circuit modeling has been done, all necessary numerical and analog measurements were presented. After that emphasis is placed on the increase in circuit efficiency with subsequent loss prevention improvements. 5 Voltage - 1 Ampere and 12 Voltage - 1 Ampere values, which are used in two separate and isolated output voltage sources are obtained.

Keywords

Flyback converter, power supply, snubber circuits.

References

• [1] WangY., J. Alonso M., Ruan X., (2017), A review of LED drivers and related technologies, IEEE Trans Industrial Electron., 64 (7), 5754-5765.
• [2] Badawy M. O., Sozer Y., and Abreu-Garcia J. A. De, (2016), A novel control for a cascaded buck-boost PFC converter operating in discontinuous capacitor voltage mode, IEEE Trans. Ind. Electron.,63(7), 4198–4200.
• [3] Akin B., (2020), Snubber circuit application for power factor correction flyback led driver, Electrica, 20(1), 108-116.
• [4] Chiu H.-J., Lo Y.-K., Chen J.-T, Cheng S.-J., Lin C.-Y., and Mou S.-C., (2010), A high-efficiency dimmable LED driver for low-power lighting applications, IEEE Trans. Ind. Electron., 57(2), 735–743.
• [5] Park C. B., Choi B. H., Cheon J. P., Rim C. T., (2014),Robust active LED driver with high power factor and low total harmonic distortion compatible with a rapid-start ballast, J Power Electron, 14(2), 226-36.
• [6] Bakan A. F., Aksoy ˙I., and Altintas N.,(2012), Loss analysis of half bridge dc-dc converters in high-current and low-voltage applications, World Academy of Science, Engineering and Technology, 63, 201–205.
• [7] Poorali B., Adib E., Farzanehfard H., (2017), A Single-Stage Single-Switch Soft-Switching Power-Factor-Correction LED Driver, IEEE Trans. Power Electron., 32(10), 7932-40.
• [8] Weidong N., Zongguang Y., Haibing W., Bin G., Long T., Lihang Y., A PSR single-stage flyback LED driver with simple line regulation and quasi-resonant operation, J of Semiconductors, vol.35, no.8, pp. 1-6, Jan., 2014.
• [9] Naresh K., Umavathi M., and Mohan H., 2014, Multi output flyback converter with switching/linear post regulators, International Journal of Recent Development in Engineering and Technology, 2(6), 21–26.
• [10] Cheng C. A., Cheng H.L., Yang F.L., Ku C.W., (2011), Single-stage driver for supplying high-power light-emitting-diodes with universal utility-line input voltages, IET Power Electron., 5(9), 1614-1623.
• [11] Huber L. and Jovanovic M., 1999, Forward-flyback converter with current-doubler rectifier: Analysis, design, and evaluation results,” IEEE Transactions on Power Electronics, 14(1), 184–192.
• [12] Zhan T., Zhang Y., Nie J., Zhang Y., Zhao Z., (2014), A novel soft-switching boost converter with magnetically coupled resonant snubber, IEEE Trans. Power Electron., 29(11), 5680-5687.
• [13] Şahin Y., Ting N.S, (2018), Soft switching passive snubber cell for family of PWM DC-DC converters, Electrical Enginnering,100, 1785-1796.
• [14] Mohammadi M., Adib E., Yazdani M.R., (2015), Family of soft-switching single-switch PWM converters with lossless passive snubber, IEEE Trans. Ind. Electron.,62(6), 3473-3481.
• [15] Kondrath N. and Kazimierczuk M. K., (2012), Comparison of wide- and highfrequency duty-ratio-to-inductor-current transfer functions of DC-DC PWM buck converter in CCM, IEEE Trans. Ind. Electron.,59(1), 641–642.
• [16] Wang Y., Guan Y., Ren K., Wang W., and Xu D., (2015), A single-stage LED driver based on BCM boost circuit and LLC converter for street lighting system, IEEE Trans. Ind. Electron., 62(9), pp. 5446–5448.
• [17] Li R.T.H., Chung H.S-H., Sung A.K.T., (2010), Passive lossless snubber for boost PFC with minimum voltage and current stress, IEEE Trans. Power Electron., 25(3), 602-613.
• [18] Sahin Y., Aksoy İ., Tıng N.S., (2015), An improved ZVZCT-PWM DC-DC boost converter, Sigma J Eng & Nat Sci 33(4), 639-651.
• [19] Sahin Y., Tıng N.S., Acar F., (2018), A soft switching with reduced voltage stress ZVT PWM full bridge converter, Review of Scientific Instruments 89(4), 639-651.