Abstract：A two-switch Buck-Boost (TSBB) converter controlled by the average current mode is proposed for the high-speed low-voltage generator.For the high-speed low-voltage generator,its output voltage range is wide and low-frequency voltage ripple is also large.In order to supply power to low-voltage DC power system,the generator output voltage need to be regulated by the DC converter.The noninverting two switches Buck-Boost converter is suitable for wide input voltage applications.The low-frequency small-signal model of the non-ideal TSBB converter is built in the synchronous operation mode based on the averaged switch method,and the key transfer function of the control system is also derived.The influences of the input parameters,the load changes,and the right half plane (RHP) zero points on the control system are then analyzed.Based on the small-signal models,the average current control strategy with high stability and low output ripple and suitable for wide input voltage is proposed.The feasibility of the proposed average current control strategy is verified by the simulation using SABER software.And a prototype with 10 times input voltage range is built to verify the correctness and effectiveness of the proposed control strategy.
台流臣,林明耀,王建华,付兴贺. 宽电压范围高速低压发电机交直变换器的平均电流控制策略[J]. 电工技术学报, 2015, 30(13): 19-26.
Tai Liuchen,Lin Mingyao,Wang Jianhua,Fu Xinghe. An Average Current Control Strategy of AC-DC Converter for High-speed Low Voltage Generators with Wide Voltage Input. Transactions of China Electrotechnical Society, 2015, 30(13): 19-26.
[1] 沈建新,缪冬敏.变速永磁同步发电机系统及控制策略[J].电工技术学报,2013,28(3):1-7. Shen Jianxin,Miao Dongmin.Variable speed permanent magnet synchronous generator systems and control strategies[J].Transactions of China Electrotechnical Society,2013,28(3):1-7. [2] Gerada D,Mebarki A,Brown N L,et al.High-speed electrical machines:technologies,trends,and developments[J].IEEE Transactions on Industrial Electronics,2014,61(6):2946-2959. [3] Pan Z,Bkayrat R A.Modular motor/converter system topology with redundancy for high-speed,high-power motor applications[J].IEEE Transactions on Power Electronics,2010,25(2):408-416. [4] 周增福,严仰光.宽电压输入范围调节/变换装置的建模与仿真[J].南京航空航天大学学报,2005,37(3):365-370. Zhou Zengfu,Yan Yangguang.Modeling and simulation for a converter/regulator with a wide range of input voltage[J].Journal of Nanjing University of Aeronautics and Astronautics,2005,37(3):365-370. [5] Ren X,Ruan X,Qian H,et al.Three-mode dual frequency two-edge modulation scheme for four-switch buck-boost converter[J].IEEE Transactions on Power Electronics,2009,24(2):499-509. [6] Restrepo C,Calvente J,Cid-Pastor A,et al.A noninverting Buck-Boost DC-DC switching converter with high efficiency and wide bandwidth[J].IEEE Transactions on Power Electronics,2011,26(9):2490-2503. [7] Yao C,Ruan X,Wang X.Isolated Buck-Boost DC/DC converters suitable for wide input-voltage range[J].IEEE Transactions on Power Electronics,2011,26(9):2599-2613. [8] Lee Y J,Khaligh A,Chakraborty A,et al.Digital combination of Buck and Boost converters to control a positive buck-boost converter and improve the output transients[J].IEEE Transactions on Power Electronics,2009,24(5):1267-1279. [9] 姚川,阮新波,曹伟杰,等.双管Buck-Boost变换器的输入电压前馈控制策略[J].中国电机工程学报,2013,33(21):36-44. Yao Chuan,Ruan Xinbo,Cao Weijie,et al.An input voltage feedforward control strategy for two-switch Buck-Boost DC-DC converters[J].Proceedings of the CSEE,2013,33(21):36-44. [10]Schaltz E,Rasmussen P O,Khaligh A.Non-inverting Buck-Boost converter for fuel cell application[C].IEEE Annual Conference on Industrial Electronics,USA,2008:855-860. [11]Sahu B,Rincon-Mora G A.A low voltage,dynamic,noninverting,synchronous Buck-Boost converter for portable applications[J].IEEE Transactions on Power Electronics,2004,19(2):443-452. [12]Chen Jingquan,Maksimovic D,Erickson E W.Analysis and design of a low-stress Buck-Boost converter in universal-input PFC applications[J].IEEE Transactions on Power Electronics,2006,21(2):320-329. [13]肖华锋,谢少军.用于光伏并网的交错型双管Buck-Boost变换器[J].中国电机工程学报,2010,30(21):7-12. Xiao Huafeng,Xie Shaojun.An interleaving double-switch Buck-Boost converter for PV grid-connected inverter[J].Proceedings of the CSEE,2010,30(21):7-12. [14]张卫平.开关变换器的建模与控制[M].北京:中国电力出版社,2006:263-275. [15]欧阳长莲,严仰光,章国宝.同步整流Buck变换器断续工作模式建模分析[J].电工技术学报,2002,17(6):54-59. Ouyang Changlian,Yan Yangguang,Zhang Guobao.Modeling analysis of synchronous rectifier Buck converter in discontinuous conduction mode[J].Transactions of China Electrotechnical Society,2002,17(6):54-59. [16]王建华,卢旭倩,张方华.等两级式单相逆变器输入电流低频纹波分析及抑制[J].中国电机工程学报,2012,32(6):10-16. Wang Jianhua,Lu Xuqian,Zhang Fanghua,et al.Low frequency input current ripple analysis and reduction in a single phase inverter with two-stage structure[J].Proceedings of the CSEE,2012,32(6):10-16. [17]嵇保健,王建华,赵剑锋.不隔离单相光伏并网逆变器系统输入电流低频纹波抑制[J].电工技术学报,2013,28(6):139-157. Ji Baojian,Wang Jianhua,Zhao Jianfeng.Reduction of low frequency input current ripple a non-isolated single phase photovoltaic grid-connecteds in inverter[J].Transactions of China Electrotechnical Society,2013,28(6):139-157.
2015, Vol. 30 
