The dissertation employs SSTO boost-flyback semi-stage to generate two power flow streams, and one of the streams is for direct power transferring. However, there are one in-ductor and two transformers in the circuit. Hence, the suggested further work is to realize magnetic integration circuits by integrating the boost inductor and two transformers with single magnetic core. This implementation will result in smaller size, lighter weight and lower cost as well as more attraction for low power applications.
To further promote the conversion efficiency and power rating of the proposed converters, several topics could be the potential further work for this objective. Since DCM boost-flyback semi-stage results rich EMI in ac source and high current stress of control switch, the sug-gested further work is to push boost-flyback semi-stage in CCM with soft-switching nique, such as active clamp circuit or zero-voltage-transition (ZCT) circuit, etc. These tech-niques can effectively achieve soft-switching and voltage spike suppression at turn-off of the power switch. Moreover, although this dissertation focuses on single stage AC/DC converter, there still exists potential for S2 PPFC inverter. The inverter would be applicable to ballast of fluorescent and high intensity discharge (HID) lamp.
REFERENCES
[1] Electromagnetic Compatibility (EMC), Part 3, International Standard IEC61000-3-2, 2001.
[2] M. J. Willers, M. G. Egan, J. M. D. Murphy, and S. Daly, “A BIFRED converter with a wide load range,” in Proc. IEEE IECON’94, Bologna, Italy, 1994, pp 226-231.
[3] R. Redl, L. Balogh, and N. O. Sokal, “A new family of single-stage isolated power-factor correctors with fast regulation of the output voltage,” in Proc. PESC’94, Taipei, Taiwan, 1994, pp.1137-1144.
[4] L. Huber, J. Zhang, M. M. Jovanovic, and F. C. Lee, “Generalized topologies of sin-gle-stage input-current-shaping circuits,” IEEE Trans. Power Electron., vol. 16, no. 4, pp. 508-513, Jul. 2001.
[5] F. Tsai, P. Markowski, and E. Whitcomb, “Off-line flyback converter with input har-monic correction,” in Proc. IEEE INTELEC’96, Annu. Meeting, 1996, pp. 120-124.
[6] J. Zhang, L. Huber, M. M. Jovanovic, and F. C. Lee, “Single-stage in-put-current-shaping technique with voltage doubler-rectifier front end,” IEEE Trans.
Power Electron., vol. 16, no. 1, pp. 55-63, Jan. 2001.
[7] L. Huber and M. M. Jovanovic, “Single-stage, single-switch, isolated power supply technique with input-current-shaping and fast output-voltage regulation for universal input-voltage-range applications,” in Proc. IEEE APEC’97, 1997, pp. 272-280.
[8] J. Qian, Q. Zhao, and F. C. Lee, “Single-stage single-switch power factor correction (S4-PFC) ac/dc converters with dc bus voltage feedback,” IEEE Trans. Power
Elec-tron., vol. 13, no. 6, pp. 1079-1088, Nov. 1998.
[9] Y. Jiang, F. C. Lee, G. Hua, and W. Tang, “A novel single-phase power factor correc-tion scheme,” in Proc. IEEE APEC’93, San Diego, CA, 1993, pp. 287-292.
[10] Y. Jiang and F. C. Lee, “Single-stage single-phase parallel power factor correction scheme,” in Proc. IEEE PESC’94, Taipei, Taiwan, 1994, pp. 1145-1151.
[11] O. Garcia, J. A. Cobos, R. Prieto, P. Alou, and J. Uceda, “Single phase power factor correction: a survey,” IEEE Trans. Power Electron., vol. 18, no. 3, pp. 749-755, May.
2003.
[12] J. Sebastian, P. J, Villegas, F. Nuno, O. Garcia, and J. Arau, “Improving dynamic re-sponse of power-factor pre-regulators by using two-input high-efficient post-regulators,” IEEE Trans. Power Electron. , vol. 12, no. 6, pp. 1007-1016, Nov.
1997.
[13] A. Lazaro, A. Barrado, M. Sanz, V. Salas, and E. Olias, “New power factor correction ac-dc converter with reduced storage capacitor voltage,” IEEE Trans. Ind. Electron., vol. 54, no. 1, pp. 384-397, Feb. 2007.
[14] J. Y. Lee and M. J. Youn, “A single-stage power-factor-correction converter with simple link voltage suppressing circuit (LVSC),” IEEE Trans. Ind. Electron., vol. 48, no. 3, pp.
572-584, Jun. 2001.
[15] H. Y. Li and L. K. Chang, “A single stage single switch parallel ac/dc converter based on two-output boost-flyback converter,” in Proc. PESC’06, Jeju, Korea, 2006, pp.
2501-2507.
[16] R. W. Erickson, Fundamentals of Power Electronics, New York: Chapman & Hall, 1997.
[17] G. Moschopoulos and P. Jain, “Single-phase single-stage power-factor-corrected con-verter topologies,” IEEE Trans. Ind. Electron. , vol. 52, no. 1, pp. 23-35, Feb. 2005.
[18] V. Vlatkovic, D. Borojevic, and F. C. Lee, “Input filter design for power factor correc-tion circuits,” IEEE Trans. Power Electron., vol. 11, no. 1, pp. 199–205, Jan. 1996.
[19] J. Sun, “Input impedance analysis of single-phase PFC converters,” IEEE Trans.
Power Electron., vol. 20, no. 2, pp. 308–314, Mar. 2005.
[20] Q. Zhao, M. Xu, F. C. Lee, and J. Qian, “Single-switch parallel power factor correction ac-dc converters with inherent load current feedback,” IEEE Trans. Power Electron., vol. 19, no. 4, pp. 928–936, Jul. 2004.
[21] S. Luo, W. Qui, W. Wu, and I. Batarseh, “Flyboost power factor correction cell and a new family of single-stage ac/dc converters,” IEEE Trans. Power Electron., vol. 20, no.
1, pp. 25–34, Jan. 2005.
[22] D. D. C. Lu, H. H. C. Iu, and V. Pjevalica, “A single-stage ac/dc converter with high power factor, regulated bus voltage, and output voltage,” IEEE Trans. Power
Elec-tron., vol. 23, no. 1, pp. 218–228, Jan. 2008.
[23] R. T. Chen, Y. Y. Chen, and Y. R. Yang, “Single-stage asymmetrical half-bridge regula-tor with ripple reduction technique,” IEEE Trans. Power Electron., vol. 23, no. 3, pp.
1358–1369, May 2008.
[24] L. H. Dixon, Jr., “High power factor preregulator for off-line power supplies,” in
Uni-trode Switching Regulated Power Supply Design Manual. Merrimack, NH: UniUni-trode
Corp., 1990.
[25] M. J. Willers, M. G. Egan, J. M. D. Murphy, and S. Daly, “A BIFRED converter with a wide load range,” in Proc. IEEE IECON’94, Bologna, Italy, 1994, pp. 226-231.
[26] C. Qian and K. M. Smedley, “A topology survey of single-stage power factor correc-tor with a boost type input-current shaper,” IEEE Trans. Power Electron., vol. 16, no.
3, pp. 360-368, May 2001.
[27] O. Garcia, P. Alou, J.A. Oliver, J.A. Cobos, J. Uceda, and S. Ollero, “AC/DC con-verters with tight output voltage regulation and with a single control loop,” in Proc.
APEC’99, Dallas, Texas, 1999, pp. 1098 -1104.
[28] Y. Panov and M. M. Jovanovic, “Small signal analysis and control design of isolated power supplies with optocoupler feedback,” IEEE Trans. Power Electron., vol. 20, no.
[29] V. J. Thottuvelil, D. Chin, and G. Verghese, “Hierarchical approaches to modeling high-power-factor AC-DC converters,” IEEE Trans. Power Electron., vol. 6, no. 2, pp.
179–187, Apr. 1991.
[30] J. Y. Choi and B. H. Cho, “Small-signal modeling of single-phase power-factor cor-recting AC/DC converters: a unified approach,” in Proc. PESC’98, 1998, pp.
1351-1357.
[31] R. B. Ridley, “Frequency response measurements for switching power supplies,” Uni-trode Power Supply Design Seminar, pp. A1-A12, 1999.
[32] A. Lazaro, A. Barrado, J. Pleite, J. Vazquez and E. Olias, “New approach of average modeling and control for AC/DC power supplies which operates with variable duty cy-cle,” in Proc. PESC’04, 2004, pp. 652-658.
[33] K. Rustom, W. Qiu, C. Iannello, and I. Batarseh, “Five-terminal switched transformer average modeling and AC analysis of PFC converters,” IEEE Trans. Power Electron., vol. 22, no. 6, pp. 2352-2362, Nov. 2007.
[34] H. Y. Li, H. C. Chen and L. K. Chang, “Analysis and design of a single stage parallel AC-to-DC converter,” IEEE Trans. Power Electron., vol. 24, no. 6, pp. 2989-3002, Dec.
2009.
[35] T. H. Chen, W. L. Lin and C. M. Liaw, “Dynamic modeling and controller design of flyback converter,” IEEE Trans. Aerospace and Electronic Systems, vol. 35, no. 4, pp.
1230–1239, Oct. 1999.
[36] R. B. Ridley, “A new continuous-time model for current-mode control,” IEEE Trans.
Power Electron., vol. 6, no. 2, pp. 271-280, Apr. 1991.
[37] R. B. Ridley, “A new continuous-time model for current-mode control with constant frequency, constant on-time, and constant off-time, in CCM and DCM,” in Proc.