Abstract：A variable timing control method based on voltage zero crossing detection is proposed in this paper, and is applied to the new type two coupled inductor soft-switching zero voltage transition (ZVT) inverter to realize the adaptive control of zero-voltage switching. Through real-time voltage zero crossing detection of the main switch, the delay time between auxiliary switch and main switch can be adjusted adaptively, and then the main switch turns on right after voltage drops to zero. Compared with the fixed timing control method, zero-voltage soft-switching can always be realized by the proposed method, and high-efficient operation of the inverter also can be ensured when its load changes from light to heavy. Instead of DSP software control, zero voltage detection, switches control logic, together with the gate driving circuit, can be designed and built totally by hardware, and therefore the control software is of better portability. Feasibility and effectiveness of the proposed method in this paper are verified by simulation and experimental results.
王玉斌, 林意斐, 董彦彦, 于玺昌. 自适应可调延时控制的双耦合电感软开关零电压转换逆变器[J]. 电工技术学报, 2014, 29(8): 103-109.
Wang Yubin, Lin Yifei, Dong Yanyan, Yu Xichang. Two Coupled Inductor Soft-Switching Zero Voltage Transition Inverter Controlled by Adaptive Variable Timing. Transactions of China Electrotechnical Society, 2014, 29(8): 103-109.
[1] De Doncker R W, Lyons J P. The auxiliary resonant commutated pole converter[C]. IEEE Industry Applica- tions Society Conference Records, 1990: 1228-1235. [2] Bellar M D, Wu T S, Tchamdjou A, et al. A review of soft-switched DC-AC converters[J]. IEEE Transactions on Industry Applications, 1998, 34(4): 847-860. [3] 许春雨, 陈国呈, 孙承波, 等. ZVT软开关三相PWM逆变器控制策略研究[J]. 电工技术学报, 2004, 19(11): 36-41, 35. Xu Chunyu, Chen Guocheng, Sun Chengbo, et al. Study of control scheme in ZVT soft-switching three-phase PWM inverter[J]. Transactions of China Electrotechnical Society, 2004, 19(11): 36-41, 35. [4] Dong W, Jae-Young Choi, Yong Li, et al. Efficiency considerations of load side soft-switching inverters for electric vehicle applications[C]. IEEE Applied Power Electronics Conference Records, 2000: 1049- 1055. [5] Gegner J P, Lee C Q. Zero-voltage transition converters using an inductor feedback techniques[C]. Proceedings of IEEE Applied Power Electronics Conference, 1994: 862-868. [6] Dong W, Peng D, Yu H, et al. A simplified control scheme for zero voltage transition(ZVT) inverter using coupled inductors[C]. Proceedings of IEEE Power Electronics Specialists Conference, Galway, Ireland, 2000: 1221-1226. [7] Lai J S, Zhang J, Yu H, et al. Source and load adaptive design for a high-power soft-switching inverter[J]. IEEE Transactions on Power Electronics, 2006, 21(6): 1667-1675. [8] Hua G, Lee F C, Jovanovic M M. An improved full-bridge-switched PWM converter using a saturable inductor[J]. IEEE Transactions on Power Electronics, 1993, 8(4): 530-534. [9] Yuan X, Barbi I. Analysis, designing, and experimenta- tion of a transformer-assisted PWM zero-voltage switching pole inverter[J]. IEEE Transactions on Power Electronics, 2000, 15(1): 72-82. [10] Wensong Yu, Jason Lai, Sung-Yeul Park. An improved zero-voltage switching inverter using two coupled magnetics in one resonant pole[J]. IEEE Transactions on Power Electronics, 2010, 25(4): 952-961. [11] Chan C C, Chau K T, Chan D T W, et al. Switching characteristics and efficiency improvement with auxiliary resonant snubber based soft-switching inverters [C]. Proceedings of IEEE Power Electronics Specialists Conference, Fukuoka, Japan, 1998: 429-435. [12] Li Y, Lee F C, Boroyevich D. A three-phase soft- transition inverter with a novel control strategy for zero-current and near zero-voltage switching[J]. IEEE Transactions on Power Electronics, 2001, 16(5): 710-723. [13] 王玉斌. 单相并网逆变器前级交错并联DC/DC变换器的研究[J]. 电力系统保护与控制, 2012, 40(12): 66-71. Wang Yubin. Study of interleaved DC/DC converter used in the first-stage of single-phase grid-connected inverter[J]. Power System Protection and Control, 2012, 40(12): 66-71.
2014, Vol. 29 
