Publisher : The Korean Institute of Electrical Engineers
DOI : 10.5370/JEET.2014.9.4.1296
Title & Authors
Analysis and Implementation of a New ZVS DC Converter for Medium Power Application Lin, Bor-Ren; Shiau, Tung-Yuan;
This paper presents a new zero voltage switching (ZVS) converter for medium power and high input voltage applications. Three three-level pulse-width modulation (PWM) circuits with the same power switches are adopted to clamp the voltage stress of MOSFETs at and to achieve load current sharing. Thus, the current stresses and power ratings of transformers and power semiconductors at the secondary side are reduced. The resonant inductance and resonant capacitance are resonant at the transition interval such that active switches are turned on at ZVS within a wide range of input voltage and load condition. The series-connected transformers are adopted in each three-level circuit. Each transformer can work as an inductor to smooth the output current or a transformer to achieve the electric isolation and power transfer. Thus, no output inductor is needed at the secondary side. Three center-tapped rectifiers connected in parallel are used at the secondary side to achieve load current sharing. Compared with the conventional parallel three-level converters, the proposed converter has less switch counts. Finally, experiments based on a 1.44kW prototype are provided to verify the operation principle of proposed converter.
Analysis of a New Parallel Three-Level Zero-Voltage Switching DC Converter, Journal of Electrical Engineering and Technology, 2015, 10, 1, 128
H. Akagi, and R. Kitada, Control and Design of a Modular Multilevel Cascade BTB System Using Bidirectional Isolated DC/DC Converters, IEEE Transactions on Power Electronics, vol. 26, no. 9, pp. 2457-2464, 2011.
J. Rodriguez, Jih-Sheng Lai, and Fang Zheng Peng, Multilevel inverters: a survey of topologies, controls, and applications, IEEE Transactions on Industrial Electronics, vol. 49, no. 4, pp. 724-738, 2002.
J. S. Lai, and F. Z. Peng, Multilevel converters - a new breed of power converters, IEEE Transactions on Industry Applications, vol. 32, no. 3, pp. 509-517, 1996.
M. Malinowski, K. Gopakumar, J. Rodriguez, and M. A. Perez, A survey on cascaded multilevel inverters, IEEE Transactions on Industrial Electronics, vol. 57, no. 7, pp. 2197-2206, 2010.
B. R. Lin, and C. L. Huang, Analysis and implementation of a novel soft-switching pulse-width modulation converter, IET Proceedings - Power Electronics, vol. 2, no. 1, pp. 90-101, 2009.
H. Ertl, J. W. Kolar, and F. C. Zach, A novel multicell DC-AC converter for applications in renewable energy systems, IEEE Transactions on Industrial Electronics, vol. 49, no. 5, pp. 1048-1057, 2002.
S. S. Lee, S. W. Choi, and G. W. Moon, High-efficiency active-clamp forward converter with transient current build-up (TCB) ZVS technique, IEEE Transactions on Industrial Electronics, vol. 54, no. 1, pp. 310-318, 2007.
Bor-Ren Lin, and Chien-Hung Liu, "ZVS DC/DC Converter Based on Two Three-Level PWM Circuits Sharing the Same Power Switches", IEEE Trans Ind. Electron., vol. 60, no. 10, pp. 4191-4200, 2013.
B. Choi, W. Lim, Sanghyun Bang, and Seungwon Choi, Small-signal analysis and control design of asymmetrical half-bridge DC-DC converters, IEEE Transactions on Industrial Electronics, vol. 53, no. 2, pp. 511-520, 2006.
T. Mishima, and M. Nakaoka, A novel highfrequency transformer-linked soft-switching halfbridge DC-DC converter with constant-frequency asymmetrical PWM scheme, IEEE Transactions on Industrial Electronics, vol. 56, no. 8, pp. 2961-2969, 2009.
Bor-Ren Lin, and Huei-Yuan Shih, ZVS converter with parallel connection in primary side and series connection in secondary side, IEEE Transactions on Industrial Electronics, vol. 58, no. 4, pp. 1251-1258, 2011.
D. Fu, Y. Liu, F. C. Lee, and M. Xu, A novel driving scheme for synchronous rectifiers in LLC resonant converters, IEEE Transactions on Power Electronics, vol. 24, no. 5, pp. 1321-1329, 2009.
J. Yungtack, M. M. Jovanovic, and Y. M. Chang, A new ZVS-PWM full-bridge converter, IEEE Transactions on Power Electronics, vol. 18, no. 5, pp. 1122-1129, 2003.
Y, Jiang, Z. Chen, and J. Pan, Zero-voltage switching phase shift full-bridge step-up converter with integrated magnetic structure, IET Proceedings - Power Electronics, vol. 3, no. 5, pp. 732-739, 2010.
Gwan-Bon Koo, Gun-Woo Moon, and Myung-Joong Youn, New zero-voltage-switching phase-shift fullbridge converter with low conduction losses, IEEE Transactions on Industrial Electronics, vol. 52, no. 1, pp. 228-235, 2005.
J.P. Rodrigues, S.A. Mussa, I. Barbi, and A.J. Perin, Three-level zero-voltage switching pulse-width modulation DC-DC boost converter with active clamping, IET Proceedings - Power Electronics, vol. 3, no. 3, pp. 345-354, 2010.
Bor-Ren Lin and Chia-Hung Chao, "Analysis, Design, and Implementation of a Soft-Switching Converter With Two Three-Level PWM Circuits", IEEE Trans. Power Electron., vol. 28, no. 4, pp. 1700-1710, 2013.
Bor-Ren Lin, "Analysis, Design and Implementation of a Soft Switching DC/DC Converter", Journal of Power Electronics, vol. 13, no. 1, pp. 20-30, January 2013.
T. T. Song, N. Huang, and A. Ioinovici, "A family of zero-voltage and zero-current-switching (ZVZCS) three-level dc-dc converters with secondary-assisted regenerative passive snubber," IEEE Trans. Circuits Syst., vol. 52, no. 11, pp. 2473-2481, Nov. 2005.