A High-Frequency Multilevel Inverter with Multi-Inputs
Liu Junfeng, Hu Renjun, Zeng Jun
1. School of Automation Science and Engineering South China University of Technology Guangzhou 510640 China; 2. School of Electric Power South China University of Technology Guangzhou 510640 China
Abstract：In this paper, a new high-frequency multilevel inverter with multi-inputs is proposed, which is composed of interleaved Buck-Boost full-bridge units. Through straightforward pulse width modulation (PWM), a staircase output with more voltage levels can be realized, whose frequency is the same as the switching frequency, making the proposed topology suitable for the high-frequency power distribution system. Additionally, the characteristic of multi-inputs makes the proposed inverter appropriate for renewable power generation, such as wind and solar energy. The modulation and operational principles of the proposed inverter are firstly introduced. Then, both time-domain analysis and Fourier analysis are presented for the studies of the input ripple and output harmonic. An experimental prototype is lastly implemented, whose results are compared with the simulation ones. The consistency of simulation and experiment confirms the feasibility of the proposed inverter.
刘俊峰, 胡仁俊, 曾君. 一种多输入端口的多电平高频逆变器[J]. 电工技术学报, 2016, 31(增刊): 111-118.
Liu Junfeng1, Hu Renjun1, Zeng Jun2. A High-Frequency Multilevel Inverter with Multi-Inputs. Transactions of China Electrotechnical Society, 2016, 31(增刊): 111-118.
[1] 张先勇, 舒杰, 吴昌宏, 等. 一种海岛分布式光伏发电微电网[J]. 电力系统保护与控制, 2014, 42(10): 55-61. Zhang Xianyong, Shu Jie, Wu Changhong, et al. Island microgrid based on distributed photovoltaic generation[J]. Power System Protection and Control, 2014, 42(10): 55-61. [2] 陈丽, 张晋国, 苏海峰. 考虑并网光伏电源出力时序特性的配电网无功规划[J]. 电工技术学报, 2014, 29(12): 120-127. Chen Li, Zhang Jinguo, Su Haifeng. Reactive power planning for distribution system with grid-connected photovoltaic system considering time-sequence character- ristics[J]. Transactions of China Electrotechnical Society, 2014, 29(12): 120-127. [3] Jain P, Pinheiro H. Hybrid high frequency AC power distribution architecture for telecommunication systems [J]. IEEE Transactions on Aerospace Electronic Systems, 1999, 35(1): 138-147. [4] Drobnik J. High frequency alternating current power distribution[C]//International Telecommunications Energy Conference, 1994: 292-296. [5] Liu J, Cheng K W E, Ye Y. A cascaded multilevel inverter based on switched-capacitor for high-frequency AC power distribution system[J]. IEEE Transactions on Power Electronics, 2014, 29(8): 4219-4230. [6] Liu J, Wu J, Zeng J, et al. A novel nine-level inverter with one voltage source and reduced voltage stress as high frequency AC power source[J]. IEEE Transactions on Power Electronics, 2016(99): 1-1. [7] Ye Z M, Jain P K, Sen P C. Analysis and design of full bridge resonant inverter for high frequency AC distributed power system application[C]//31st Annual Conference of IEEE Industrial Electronics Society, 2005: 6-10. [8] Tolbert L M, Peng F E, Habetler T G. Multilevel PWM methods at low modulation indices[J]. IEEE Transactions on Power Electronics, 2000, 15(4): 719- 725. [9] 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. [10] 王聪, 王畅, 焦健, 等. 级联二极管H桥多电平变换器[J]. 电工技术学报, 2014, 29(增1): 273-281. Wang Cong, Wang Chang, Jiao Jian, et al. New cascade diode H-bridge multi-level rectifier[J]. Transac- tions of China Electrotechnical Society, 2014, 29(S1): 273-281. [11] Fei W, Du X, Wu B. A generalized half-wave symmetry SHE-PWM formulation for multilevel voltage inverters [J]. IEEE Transactions on Industrial Electronics, 2010, 57(9): 3030-3038. [12] 金渊, 梁晖, 陈彪. 七电平混合级联型光伏并网逆变器研究[J]. 电工技术学报, 2015, 30(4): 1-7. Jin Yuan, Liang Hui, Chen Biao. Study of seven-level hybrid cascade PV grid-connected inverter[J]. Transac- tions of China Electrotechnical Society, 2015, 30(4): 1-7. [13] Du Z, Tolbert L M, Chiasson J N. Active harmonic elimination for multilevel converters[J]. IEEE Transac- tions on Power Electronics, 2006, 21(2): 459-469. [14] Aghdam M G H, Fathi S H, Gharehpetian G B. Elimination of harmonics in a multilevel inverter with unequal DC sources using the homotopy algorithm[C]// IEEE International Symposium on Industrial Electronics, 2007: 578-583. [15] Akagi H. Classification, terminology, and application of the modular multilevel cascade converter (MMCC) [J]. IEEE Transactions on Power Electronics, 2010, 26(11): 508-515. [16] Babaei E, Laali S, Bayat Z. A single-phase cascaded multilevel inverter based on a new basic unit with reduced number of power switches[J]. IEEE Transac- tions on Industrial Electronics, 2015, 62(2): 922-929. [17] Hinago Y, Koizumi H. A switched-capacitor inverter using series/parallel conversion with inductive load[J]. IEEE Transactions on Industrial Electronics, 2012, 59(2): 878-887. [18] 曾君, 吴佳磊, 刘俊峰. 新型电容自均压多电平高频逆变器[J]. 中国电机工程学报, 2016, 36(19): 5326-5333. Zeng Jun, Wu Jialei, Liu Junfeng. A novel high- frequency multilevel inverter with capacitors self- balancing[J]. Proceedings of the CSEE, 2016, 36(19): 5326-5333. [19] Wang Z, Li H. An integrated three-port bidirectional DC-DC converter for PV application on a DC distribution system[J]. IEEE Transactions on Power Electronics, 2013, 28(10): 4612-4624.
2016, Vol. 31 
