输入串联输出串联高增益Boost变换器  

Input-series Output-series High Gain Boost Converter

作　　者：陆治国[1] 刘捷丰[1] 郑路遥[1] 马召鼎[1] 王洪莲[1] 邓文东 

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市沙坪坝区400044 [2]重庆市江北供电局,重庆市江北区401147

出　　处：《中国电机工程学报》2010年第30期27-31,共5页Proceedings of the CSEE

摘　　要：提出一种新颖的输入串联输出串联高增益Boost变换器,对其工作原理和性能特点进行详细分析。该拓扑是由两个完全一致的高增益子拓扑经过输入端串联输出端串联构成的。由于升压储能电容Cf1、Cf2的存在,使得新拓扑不仅具有较高的电压增益,而且当占空比大于或等于0.5时,还实现了电感电流的自动均流。与传统两相交错并联Boost变换器相比,新拓扑的双串联结构使得电感电流纹波、输入电流纹波、开关器件的电压应力得到降低。因此,新拓扑非常适合应用于低压输入、高压输出的场合(如燃料电池并网发电系统)。最后,通过实验验证了理论分析的正确性。A novel input-series output-series high gain Boost converter was proposed in this paper.Operation principle and property of this converter were analyzed.The new topology was composed of two identical high gain subtopologies with input-series and output-series connection.As the Cf1 and Cf2,the new topology not only had high voltage gain,but also automatically evenly could share current without any sensing when the duty cycle was greater than or equal to 0.5.Compared with the traditional two phase interleaved Boost converter,the ripple of the inductor current,the ripple of the input current and the voltage stress of the switches were reduced because of the double-series structure of the new topology.Consequently,the new topology is very suitable for the application （for example,the fuel cell power system） in which it has low input voltage but high output voltage.Finally,the experiment was built to verify the theoretical analysis.

关 键 词：输入串联输出串联 交错并联 BOOST 电压增益 电压应力 

分 类 号：TM46[电气工程—电器]