Abstract：In order to suppress the turn-off voltage spike and overcome the hard-switching in traditional current-fed converters, this paper proposes a resonant current-fed bi-directional converter with high-voltage-side modulation. By adopting a variable frequency control and modulating the high voltage side, the proposed converter can operate with natural commutation and ZCS turn-off for the low-voltage-side MOSFETs. The turn-off voltage spikes of low-voltage-side MOSFETs are eliminated as well. First, the operation principles under the forward operation mode and backward operation mode are analyzed. Then the characteristics and design guideline of the proposed converter are detailed. Finally, a 400W converter prototype is built and tested. The experimental results verify the feasibility and advantages of the proposed converter and control strategy.
[1] 杨玉岗, 叶菁源, 宁浩轩, 等. “E王E”形耦合电感器的设计及其在交错并联磁集成双向DC-DC变换器中的应用[J]. 电工技术学报, 2015, 30(4): 88-97. Yang Yugang, Ye Jingyuan, Ning Haoxuan. Design of “E王E” shape coupled inductors and its application in interleaving magnetic integrated bidirectional DC-DC converter[J]. Transactions of China Electrotechnical Society, 2015, 30(4): 88-97. [2] 师长立, 唐西胜, 李宁宁, 等. 基于全桥隔离双向变换器的直流变换技术[J]. 电工技术学报, 2016, 31(2): 111-127. Shi Changli, Tang Xisheng, Li Ningning, et al. DC changing technologies based on dual-active-bridge converter[J]. Transactions of China Electrotechnical Society, 2016, 31(2): 111-127. [3] 朱宏, 周慧龙, 任亮亮, 等. 一种移相控制的三相双向DC-DC变换器[J]. 电工技术学报, 2015, 30(13): 39-46. Zhu Hong, Zhou Huilong, Ren Liangliang, et al. A three-phase bidirectional DC-DC converter based on phase shift control[J]. Transactions of China Electro- technical Society, 2015, 30(13): 39-46. [4] Prasanna U R, Pan X, Rathore A, et al. Propulsion system architecture and power conditioning topolo- gies for fuel cell vehicles[C]//Energy Conversion Con- gress and Exposition, Denver, CO, 2013: 1385-1392. [5] 杨晨, 王烨, 毛玲, 等. 基于电流源半桥变换器的光伏直流模块研究[J]. 电工技术学报, 2014, 29(增刊1): 314-319. Yang Chen, Wang Ye, Mao Ling, et al. Study on DC photovoltaic module based on current-fed half bridge converters[J]. Transactions of China Electrotechnical Society, 2014, 29(S1): 314-319. [6] Yuan B, Yang X, Zeng X, et al. Analysis and design of a high step-up current-fed multiresonant DC-DC converter with low circulating energy and zero- current switching for all active switches[J]. IEEE Transactions on Industrial Electronics, 2012, 59(2): 964-978. [7] Seong H W, Park K B, Moon G W, et al. Zero-voltage switching dual inductor-fed DC-DC converter for high power step-up applications[C]//Energy Con- version Congress and Exposition, San Jose, CA, 2009: 699-706. [8] Rathore A K, Bhat A K S, Oruganti R. A comparison of soft-switched DC-DC converters for fuel cell to utility interface application[C]//Power Conversion Conference-Nagoya, Nagoya, Japan, 2007: 588-594. [9] Jang S J, Won C Y, Lee B K, et al. Fuel cell generation system with a new active clamping current-fed half-bridge converter[J]. IEEE Transa- ctions on Energy Conversion, 2007, 22(2): 332-340. [10] Han S K, Yoon H K, Moon G W, et al. A new active clamping zero-voltage switching PWM current-fed half-bridge converter[J]. IEEE Transactions on Power Electronics, 2005, 20(6): 1271-1279. [11] Li Q, Wolfs P. The power loss optimization of a current fed ZVS two-inductor Boost converter with a resonant transition gate drive[J]. IEEE Transactions on Power Electronics, 2006, 21(5): 1253-1263. [12] Li Q, Wolfs P. An analysis of the ZVS two-inductor Boost converter under variable frequency operation[J]. IEEE Transactions on Power Electronics, 2007, 22(1): 120-131. [13] Rathore A K, Prasanna U R. Analysis, design, and experimental results of novel snubberless bidirec- tional naturally camped ZCS/ZVS current-fed half- bridge DC/DC converter for fuel cell vehicles[J]. IEEE Transactions on Industrial Electronics, 2013, 60(10): 4482-4491. [14] Noh Y S, Oh M S, Ryu M Y, et al. Isolated bi-directional DC/DC converter using quasi-resonant ZVS[C]//IEEE International Conference on Industrial Technology (ICIT), Busan, Korea, 2014: 514-518.
2017, Vol. 32 
