1. XiangYang CSR Electrify Technology System Co., Ltd Xiangyang 441100 China 2. School of Information Science and Engineering, Central South University Changsha 410075 China
Abstract：By discussing the current cascaded circuit, this paper puts forward a novel kind of cascaded medium voltage rectifier based on IGBT. The composition of main circuit and control method were studied, the operation mode of this circuit topology and power unit is analyzed and researched, and the mathematical model and spatial matrix equation are derived. The controllability judgment of spatial matrix with different working condition was realized. This paper puts forward different operation modes of the cascade rectifier and also analyzes control pulse and circuit operation state with examples in one cycle. At last the simulation and experiments have been worked out to verify the effective control and regulation of output voltage and current by this kind circuit topology.
[1] Shan Renzhong, Yin Zhongdong, Xiao Xiangning, et al. Multi objectives operation of cascade inverter- based voltage quality compensation with PWM rectifier supply[C]. International Conference on Power Electronics and Drive Systems, Taipei, China, 2009. [2] 王久和, 李华德. 一种新的电压型PWM整流器直接功率控制策略[J]. 中国电机工程学报, 2005, 25(16): 47-52. Wang jiuhe, Li Huade. A new direct power control strategy of three-phase boost type PWM rectifiers[J]. Proceedings of the CSEE, 2006, 25(16), 47-52. [3] 丁冠军, 汤广福, 丁明, 等. 新型多电平电压源换流器模块的拓扑机制与调制策略[J]. 中国电机工程学报, 2009, 29(36): 1-8. Ding Guanjun, Tang Guangfu, Ding ming, et al. Topology mechanism and modulation scheme of a new multilevel voltage source converter modular[J]. Proceedings of the CSEE, 2009, 29(36): 1-8. [4] 屠卿瑞, 徐政, 郑翔, 等. 模块化多电平换流器型直流输电内部环流机理分析[J]. 高电压技术, 2010, 36(2): 547-552. Tu Qingrui, Xuzheng, Zheng Xiang, et al. Mechanism analysis on the birculating burrent in modular multilevel converter based HVDC[J]. High Voltage Engineering, 2010, 36(2): 547-552. [5] 刘文华, 宋强, 陈远华, 等. NPC逆变器SHE-PWM开头角度的计算方法研究[J]. 中国电机工程学报, 2002, 22(11): 31-34. Liu Wenhua, Song Qiang, Chen Yuanhua, et al. A method of solution to selective harmonic eliminated PWM switching angles for NPC inverters[J]. Proceedings of the CSEE, 2002, 22(11): 31-34. [6] 王立乔, 齐飞. 级联型多电平变流器新型载波相移SPWM研究[J] . 中国电机工程学报, 2010, 30(03): 28-34. Wang Liqiao, Qi Fei. Novel carrier phase-shifted SPWM for cascade multilevel converter[J]. Proceedings of the CSEE. 2010, 30(03), 28-34. [7] Perez M, RodriguezJ, Pont J, et al. Power distribution in hybrid multi-cell converter with nearest level modulation[C]. Proceedings of IEEE International Symposium on Industrial Electronics, 2007: 736-741. [8] 王兆安, 杨军, 刘进军, 等. 谐波抑制和无功功率补偿 [M]. 2版. 北京: 机械工业出版社, 2010. [9] Bellar M D, Watanabe E H. Analysis of the dynamic and steady-state performance of cockcroft-walton cascade rectifiers[J]. IEEE Transactions on Power Electronics, 1992, 7(3): 526-534. [10] Tao Xinghua, Li Yongdong, Sun Min. A novel voltage balance method for cascaded H-bridge rectifier[C]. Proceedings of IEEE Conference on Vehicle Power and Propulsion, Lille, France, 2010. [11] Walker G R, Sernia. Cascaded DC-DC converter connection of photovoltaic modules[J]. IEEE Transactions on Power Electronics, 2004, 19(4): 1130-1139. [12] Vazquez S, Leon. DC-voltage-ratio control strategy for multilevel cascaded converters fed with a single DC source[J] . IEEE Transactions on Industrial Electronics, 2009, 56(7): 2513-2521. [13] Iman Eini, Schanen H. Design of cascaded H-bridge rectifier for medium voltage applications[C]. Orlando, America, 2007. [14] 邵丙衡. 电力电子技术[M]. 北京: 中国铁道出版社, 1997. [15] 赵明旺, 王杰, 江卫华. 现代控制理论[M] . 华中科技大学出版社, 2007.
2013, Vol. 28 
