|
|
|
| A Dual-DC-Input Multi-Level Dual-Buck Inverter |
| Yang Fan1, Ge Hongjuan1, 2, Dang Runyun1, Yang Jingfan1, Wu Hongfei1 |
1. College of Automation Nanjing University of Aeronautics and Astronautics Nanjing 211106 China;
2. College of Civil Aviation Nanjing University of Aeronautics and Astronautics Nanjing 211106 China |
|
|
|
|
Abstract A dual-DC-input multi-level dual-Buck inverter (DI-ML-DBI) is proposed in this paper. A direct power flow path between the low voltage DC input source and the AC output of the inverter is built by introducing two dual-DC-input three-level switching cells into a traditional dual-buck inverter. Therefore, partial input power from the low voltage source can be directly fed to the AC output through the inverter without being processed by the front-end Boost converter of the inverter. Hence, the power rating and power losses of the front-end Boost converter are reduced significantly. Meanwhile, five voltage-levels are generated by the DI-ML-DBI with the help of the two DC input sources, which lead to the reduction of switch voltage stresses and switching losses. In addition, the proposed DI-ML-DBI retains the advantages of no shoot-through and no body-diode reverse-recovery problems. The operation principles and characteristics of the proposed DI-ML-DBI are analyzed in detail, and an adaptive-carrier-based modulation strategy is presented for wide DC input voltage range application. The experimental results verify the proposed DI-ML-DBI and its control strategy.
|
|
Received: 24 August 2016
Published: 28 March 2018
|
|
|
|
|
|
[1] 洪峰, 刘军, 严仰光. 滞环电流控制型双Buck逆变器[J]. 电工技术学报, 2004, 19(8): 73-77.
Hong Feng, Liu Jun, Yan Yangguang.Hysteresis current controlled dual Buck half bridge inverter[J]. Transactions of China Electrotechnical Society, 2004, 19(8): 73-77.
[2] 吴婷, 肖岚, 姚志垒. 双降压式全桥逆变器[J]. 中国电机工程学报, 2009, 29(15): 22-27.
Wu Ting, Xiao Lan, Yao Zhilei.Dual Buck full- bridge inverter[J]. Proceedings of the CSEE, 2009, 29(15): 22-27.
[3] 吕琳娜, 肖岚, 祁琦. 三相双降压逆变器中电感的磁集成方式比较与优化设计[J]. 电工技术学报, 2016, 31(13): 55-63.
Lü Linna, Xiao Lan, Qi Qi.Comparison and optimal design for magnetic integration methods of inductors in three-phase dual-Buck inverters[J]. Transactions of China Electrotechnical Society, 2016, 31(13): 55-63.
[4] Chen B, Gu B, Zhang L, et al.A high-efficiency MOSFET transformerless inverter for nonisolated microinverter applications[J]. IEEE Transactions on Power Electronics, 2015, 30(7): 3610-3612.
[5] Araujo S V, Zacharias P, Mallwitz R.Highly efficient single-phase transformer-less inverters for grid- connected photovoltaic systems[J]. IEEE Transactions on Industrial Electronics, 2010, 57(9): 3118-3128.
[6] 谢江华, 张方华, 张帅, 等. 基于载波移相控制的高功率密度双降压式全桥逆变器[J]. 电工技术学报, 2016, 31(13): 1-9.
Xie Jianghua, Zhang Fanghua, Zhang Shuai, et al.A high power density dual-Buck full-bridge inverter based on carrier phase-shifted control[J]. Transactions of China Electrotechnical Society, 2016, 31(13): 1-9.
[7] Gu B, Dominic J, Lai J S, et al.High reliability and efficiency single-phase transformerless inverter for grid-connected photovoltaic systems[J]. IEEE Transa- ctions on Power Electronics, 2013, 28(5): 2235-2245.
[8] Hong F, Liu J, Ji B, et al.Single inductor dual Buck full-bridge inverter[J]. IEEE Transactions on Indu- strial Electronics, 2015, 62(8): 4869-4877.
[9] 尹培培, 洪峰, 王成华, 等. 无源无损软开关双降压式全桥逆变器[J]. 电工技术学报, 2014, 29(6): 40-48.
Yin Peipei, Hong Feng, Wang Chenghua, et al.Passive lossless soft-switching dual Buck full bridge inverer[J]. Transactions of China Electrotechnical Society, 2014, 29(6): 40-48.
[10] 张力, 任小永, 阮新波. 基于虚拟阻抗且提高系统带宽的抑制两级式逆变器中二次谐波电流的控制策略[J]. 电工技术学报, 2014, 29(6): 136-144.
Zhang Li, Ren Xiaoyong, Ruan Xinbo.Control strategy to improve the bandwidth and reduce the second harmonic current in the two-stage inverter based on virtual impedance[J]. Transactions of China Electrotechnical Society, 2014, 29(6): 136-144.
[11] 胡存刚, 姚培, 张云雷, 等. 高效非隔离单相并网MOSFET逆变器拓扑及控制策略[J]. 电工技术学报, 2016, 31(13): 82-91.
Hu Cungang, Yao Pei, Zhang Yunlei, et al.Topology and control strategy for high-efficient non-isolated single-phase grid-connected MOSFET inverter[J]. Transactions of China Electrotechnical Society, 2016, 31(13): 82-91.
[12] Siwakoti Y P, Peng F Z, Blaabjerg F, et al.Impedance-source networks for electric power con- version part I: a topological review[J]. IEEE Transa- ctions on Power Electronics, 2015, 30(2): 699-716.
[13] 黄瑞哲, 陈道炼, 许志龙. 新颖的单相电压型准Z源逆变器[J]. 电工技术学报, 2015, 30(16): 33-41.
Huang Ruizhe, Chen Daolian, Xu Zhilong.A novel single phase voltage mode quasi-Z-source inverter[J]. Transactions of China Electrotechnical Society, 2015, 30(16): 33-41.
[14] 张千帆, 董帅, 周超伟, 等. Z源逆变器直通电流回路及功率开关管电流应力分析[J]. 电工技术学报, 2016, 31(4): 123-128.
Zhang Qianfan, Dong Shuai, Zhou Chaowei, et al.Analysis of circuit path and current stress of power devices under shoot-through mode in Z-source inverter[J]. Transactions of China Electrotechnical Society, 2016, 31(4): 123-128.
[15] 阮新波, 李斌, 陈乾宏. 一种适用于高压大功率变换器的三电平直流变换器[J]. 中国电机工程学报, 2003, 23(5): 19-23.
Ruan Xinbo, Li Bin, Chen Qianhong.A new approach for high voltage and high power three-level DC-DC conversion[J]. Proceedings of the CSEE, 2003, 23(5): 19-23.
[16] Hong F, Liu J, Ji B, et al.Interleaved dual Buck full-bridge three-level inverter[J]. IEEE Transactions on Power Electronics, 2016, 31(2): 964-974.
[17] Zhang L, Sun K, Xing Y, et al.A family of five-level dual-Buck full-bridge inverters for grid-tied appli- cations[J]. IEEE Transactions on Power Electronics, 2016, 31(10): 7029-7042.
[18] 刘苗, 洪峰, 尹培培, 等. 复合型级联双Buck飞跨电容五电平逆变器[J]. 电工技术学报, 2015, 30(18): 35-42.
Liu Miao, Hong Feng, Yin Peipei, et al.A hybrid cascaded dual Buck flying-capacitor five-level inverter[J]. Transactions of China Electrotechnical Society, 2015, 30(18): 35-42. |
|
|
|
2018, Vol. 33 
