Abstract：This paper proposes the circuit configuration, circuit topological family and master-slave power management SPWM control strategy with smooth and seamless handover in different power supply modes of quasi single stage isolated Buck-Boost mode multi-input inverter. The circuit configuration, topologies, power management strategy, characteristic of steady principle, duty ratio relationship of the multi-input sources and design criteria for key circuit parameters are fully investigated. The circuit configuration is composed of a bidirectional isolated Buck-Boost converter with multi-input selected switches in series and an unfold bridge, including four topologies such as one-transistor mode. The master-slave power management strategy is composed of n-1 input voltage loops, n power distribution circuits and instantaneous output voltage loop with independent power control, which can realize smooth and seamless handover in different power supply modes. The designed and developed 500V·A DC 80~110V/AC 220V 50Hz prototype of multi-input inverter has excellent performances such as high conversion efficiency, high quality of output waveforms, strong load adaptability, smooth and seamless handover in different power supply modes.
江加辉, 陈道炼, 佘敏. 准单级隔离Buck-Boost型多输入逆变器[J]. 电工技术学报, 2018, 33(18): 4323-4334.
Jiang Jiahui, Chen Daolian, She Min. Quasi Single Stage Isolated Buck-Boost Mode Multi-Input Inverter. Transactions of China Electrotechnical Society, 2018, 33(18): 4323-4334.
[1] 沈鑫, 曹敏. 分布式电源并网对于配电网的影响研究[J]. 电工技术学报, 2015, 30(1): 346-351. Shen Xin, Cao Min.Research on the influence of distributed power grid for distribution network[J]. Transactions of China Electrotechnical Society, 2015, 30(1): 346-351. [2] 初壮, 窦孝祥, 于群英. 考虑风电随机性的多场景配电网重构[J]. 电力系统保护与控制, 2017, 45(1): 132-138. Chu Zhuang, Dou Xiaoxiang, Yu Qunying.Multi scene distribution network reconfiguration con- sidering the randomness of wind power[J]. Power System Protection and Control, 2017, 45(1): 132-138. [3] 赵书强, 王明雨, 胡永强, 等. 基于不确定理论的光伏出力预测研究[J]. 电工技术学报, 2015, 30(6): 213-220. Zhao Shuqiang, Wang Mingyu, Hu Yongqiang, et al.Research on the prediction of PV output based on uncertainty theory[J]. Transactions of China Electro- technical Society, 2015, 30(6): 213-220. [4] Chen D L, Jiang J H, Qiu Y H, et al.Single-stage three-phase current-source photovoltaic grid- connected inverter high voltage transmission ratio[J]. IEEE Transactions on Power Electronics, 2017, 32(10): 7591-7601. [5] 高长伟, 刘晓明, 陈海, 等. 光伏市电互补系统建模及其运行特性[J]. 电工技术学报, 2017, 32(5): 200-207. Gao Changwei, Liu Xiaoming, Chen Hai, et al.System modeling of wind-PV-ES hybrid power system and its control strategy for grid-connected[J]. Transactions of China Electrotechnical Society, 2017, 32(5): 200-207. [6] 蔡国伟, 孔令国, 潘超, 等. 风光储联合发电系统的建模及并网控制策略[J]. 电工技术学报, 2013, 28(9): 196-204. Cai Guowei, Kong Lingguo, Pan Chao, at al. System modeling of wind-PV-ES hybrid power system and its control strategy for grid-connected[J]. Transa- ctions of China Electrotechnical Society, 2013, 28(9): 196-204. [7] Tan K T, Sivaneasan B, Peng X Y, et al.Control and operation of a DC grid-based wind power generation system in a microgrid[J]. IEEE Transactions on Energy Conversion, 2016, 31(2): 496-505. [8] Cheng-Wei Chen, Kun-Hung Chen, Yaow-Ming Chen.Modeling and controller design of an autonomous PV module for DMPPT PV systems[J]. IEEE Transa- ctions on Power Electronics, 2014, 29(9): 4723-4732. [9] Strunz K, Abbasi E, Huu D N.DC microgrid for wind and solar power integration[J]. IEEE Journal of Emerging and Selected Topics in Power Electronics, 2014, 2(1): 115-126. [10] Adhikari S, Li F.Coordinated V-f and P-Q control of solar photovoltaic generators with MPPT and battery storage in microgrids[J]. IEEE Transactions on Smart Grid, 2014, 5(3): 1270-1281. [11] Wang Chengshan, Li Xialin, Guo Li, et al.A nonlinear- disturbance-observer-based DC-bus voltage control for a hybrid AC/DC microgrid[J]. IEEE Transactions on Power Electronics, 2014, 29(11): 6162-6177. [12] Yu S, Kwasinski A.Analysis of soft-switching isolated time-sharing multiple-input converters for DC distribution systems[J]. IEEE Transactions on Power Electronics, 2013, 28(4): 1783-1794. [13] Liang X, Youyi W.Exact steady-state analysis in multiple-input converters applied with diverse time-sharing switching schemes[J]. IET Power Elec- tronics, 2015, 8(5): 724-734. [14] Onwuchekwa C N, Kwasinski A.A modified-time- sharing switching technique for multiple-input DC-DC converters[J]. IEEE Transactions on Power Electronics, 2012, 27(11): 4492-4502. [15] Bae S, Kwasinski A.Dynamic modeling and operation strategy for a microgrid with wind and photovoltaic resources[J]. IEEE Transactions on Smart Grid, 2012, 3(4): 1867-1876. [16] Chen Y T, Wei S Y.A multiple-winding bidirectional flyback converter used in the solar system[C]//IEEE International Symposium on Next-Generation Elec- tronics, Kaohsiung, Taiwan, 2013: 130-133. [17] Nam-Jin Cho, Yun-Sung Kim, Chang-Yeol Oh, et al.Design of multiple-input multiple-output flyback converter for hybrid renewable energy system[C]// IEEE Electrical Machines and Systems Conference, Busan, South Korea, 2013: 246-251. [18] Mangu B, Akshatha S, Suryanarayana D, et al.Grid-connected PV-wind-battery-based multi-input transformer-coupled bidirectional DC-DC converter for household applications[J]. IEEE Journal of Emerging and Selected Topics in Power Electronics, 2016, 4(3): 1086-1095. [19] Debnath D, Chatterjee K.Two-stage solar photo- voltaic-based stand-alone scheme having battery as energy storage element for rural deployment[J]. IEEE Transactions on Industrial Electronics, 2015, 62(7): 4148-4157.
2018, Vol. 33 
