Design of PI and Fuzzy Controller for High-Efficiency and Tightly Regulated Full Bridge DC-DC Converter

Authors: Sudha Bansal, Lalit Mohan Saini, Dheeraj Joshi

Abstract:

The controller is used to improve the dynamic performance of DC-DC converter by achieving a robust output voltage against load disturbances. This paper presents the performance of PI and Fuzzy controller for a phase- shifted zero-voltage switched full-bridge PWM (ZVS FB- PWM) converters with a closed loop control. The proposed converter is regulated with minimum overshoot and good stability. In this paper phase-shift control method is used as an effective tool to reduce switching losses and duty cycle losses. A 1kW/100KHz dc/dc converter is simulated and analyzed using MATLAB. The circuit is simulated for static and dynamic load (DC motor). It has been observed that performance of converter with fuzzy controller is better than that of PI controller. An efficiency comparison of the converter with a reported topology has also been carried out.

Keywords: Full-bridge converter, phase-shifted, synchronous rectifier (SR), zero-voltage switching (ZVS).

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1336224

References:

[1] L.J. Hitchcock, M.M. Walters, R.A. Wunderlich, "Resonant-Transition dc-to-dc Converter,” U.S. Patent No.: 5132889, July, 1992.
[2] G. Hua and F. C. Lee, "An overview of soft-switching techniques for PWM converters,” EPE Journal, Vol. 3, No. 1, Mar. 1993.
[3] G. Hua and F. C. Lee, "Soft-switching techniques in PWM converters,” IEEE Trans. Ind. Electron., Vol. 42, Issue-6, pp. 595 – 603, 1995.
[4] R. Watson and F. C. Lee, "A soft-switched, full-bridge boost converter employing an active- clamp circuit,” in Proc. IEEE PESC, 1996, pp. 1948-1954.
[5] V. Yakushev, and S. Fraidlin, "Full-bridge isolated current fed converter with active clamp,” in Proc. IEEE APEC, 1999, pp. 560 –566.
[6] W. Chen, F. C. Lee, M. M. Javanovic, J. A. Sabate, "A Comparative Study of a Class of Full Bridge Zero-Voltage Switched Converters,” IEEE APEC’95, 1995, pp.893-899.
[7] G. Hua, F. C. Lee, M. M. Jovanovic, "An Improved Full-Bridge Zero- Voltage- Switched PWM Converter Using a Saturable Inductor,” IEEE Trans. Power Electron., Vol. 8, No. 4, pp.530-534, October, 1993.
[8] B. -H. Kwon, J. -H. Kim, G -Y Jeong, "Full-Bridge Soft Switching PWM Converter with Saturable Inductors at the secondary Side,” IEE Proc. Elect. Power Appl.,Vol. 146, No. 1, pp.117-122 , Jan. 1999.
[9] J. Sun, S. Hamada, J. Yoshitsugn, B. Guo, M. Nakaaka, "Zero Voltage Soft Commutation PWM DC-DC Converter with Saturable Reactor Switch-Cascaded Diode Rectifier,” IEEE Trans. Circuits Syst., Vol. 45, No. 4, pp.348-354, , April, 1998.
[10] R. Redl, L. Balogh, D. W. Edwards, "Optimum ZVS Full-Bridge DC/DC Convener with PWM Phase-Shift Control: Analysis, Design Considerations, and Experimental Results,” Ninth Annual Applied Power Electronics Conference and Exposition, APEC '94, 1994, Vol.1, pp.159 – 165.
[11] S. Valtchev, B.V. Barges, "1KW/250 kHz Full Bridge Zero Voltage Switched Phase Shift DC-DC Converter with Improved Efficiency,” INTELEC‘95, 1995, pp.803-807.
[12] G. Koo, G. Moon, and M.Y.Youn, "New zero-voltage switching phase-shift full-bridge converter with low conduction losses,” IEEE Trans. Ind. Electron., vol.52, pp. 228–235, Feb.2005.
[13] X. Wu, J. Zhang, X. Xie, and Z. Qian, "Analysis and optimal design considerations for an improved full bridge ZVS dc-dc converter with high efficiency,” IEEE Trans. Power Electron., Vol. 21, No. 5, pp. 1225-1234, Sep. 2006.
[14] M. Borage, S. Tiwari, S. Bhardwaj, and S. Kotaiah, " A full-bridge DC/DC converter with zero-voltage-switching over the entire conversion range,” IEEE Trans. Power Electron., Vol. 23, No. 4, pp. 1743-1750, Jul.2008.
[15] Y. Jang, M. M. Jovanovic, Y. M. Chang, "A New ZVS PWM Full-Bridge Converter,” IEEE Trans. Power Electron., Vol. 18, No. 5, pp. 1122-1129, Sep. 2003.
[16] J. M. Zhang, X.G Xie, X.K. Wu, Z. Qian, "Comparison Study of Phase-Shifted Full Bridge ZVS Converters,” 35th Annual IEEE Power Electronics Specialists Conference, PESC 04, 2004, Vol.1 , pp. 533 - 539.
[17] X. Wu, J. Zhang, X. Xie, and Z. Qian, "Analysis and design for a New ZVS DC–DC converter with active clamping ,” IEEE Trans. Power Electron., vol. 21, no. 6, pp. 1572–1579, Nov. 2006.
[18] E. Adib and H. Farzanehfard, "Family of isolated zero voltage transition PWM converters,” IET Power Electron., vol. 1, no. 1, pp. 144–153, 2008.
[19] K. M. Smith and K. M. Smedley, "Properties and synthesis of passive lossless soft-switching PWM converters,” IEEE Trans. Power Electron., vol. 14, pp. 890–899, Sept. 1999.
[20] K. Harada, Y. Ishara, and T. Todaka, "Analysis and design of ZVS-PWM half-bridge converter with secondary switches,” in Record, IEEE power Electronics Specialists Conference, PESC 95, June 1995, Vol.1, pp. 280– 285.
[21] M. Michihira, T. Funaki, K. Matsura, and M. Nakaoka, "A novel quasi-resonant DC-DC converter using phase shift modulation in secondary side of high-frequency transformer,” in Record, PESC '96, 27th Annual IEEE , June 1996, Volume 1, pp. 670 – 675.
[22] J. G. Cho, J.-W. Beak, and C.-Y. Jeong, "Novel zero voltage and zero current switching full bridge PWM converter using a simple auxiliary circuit,” IEEE Trans. Ind. Appl., Vol. 35, No. 1, pp. 15-20, Jan./Feb. 1999.
[23] T. Song, H.Wang, H. Chung, S. Tapuhi, and A. Ioinovici, "A high-voltage ZVZCS dc–dc converter with low voltage stress,” IEEE Trans. Power Electron., vol. 23, no. 6, pp. 2630–2647, Nov. 2008.
[24] B-Y Chen Y-S Lai, "Switching Control Technique of Phase-Shift-Controlled Full-Bridge Converter to Improve Efficiency Under Light-Load and Standby Conditions Without Additional Auxiliary Components,” IEEE Trans. Power Electron., Vol. 25, No. 4, pp. 1001 - 1012, Apr. 2010.
[25] Z. Chen, B. Ji, F. Ji, L. Shi, "Analysis and design considerations of an improved ZVS full-bridge DC-DC converter,” Twenty-Fifth Annual IEEE on Applied Power Electronics Conference and Exposition (APEC), 2010, pp. 1471 – 1476.
[26] K.-W. Seek, B.-H. Kwon, "An improved zero-voltage and zero-current-switching full-bridge PWM converter using a simple resonant circuit,” IEEE Trans. Ind. Electron., Vol. 48, Issue: 6, pp. 1205 – 1209, 2001.
[27] S. Bansal, "Zero-voltage Switching in Full-bridge Converter,” in Australian Journal of Electrical & Electronics Engineering, Volume 5, No. 1, 2008, pp. 85-93.
[28] B. V. Sreenivasappa, Y. Udaykumar, "Elimination of Output Voltage Oscillations in DC-DC Converter using PWM with PI Controller,” Serbian Journal of Electrical Engineering, Vol. 7, No. 1, May 2010, pp.57-68
[29] X.F. Joseph, N. Islam , S.P. Kumar, D.A. Dominic & D.M.M. S.R. Prabha, "Design and Simulation of a PI controlled Soft Switched Front end Converter for Switched Reluctance Motor”, International Journal of Computer Applications, Vol. 34, No.10, November 2011.