新型双输入Boost变换器  

Double-input Boost converter

作　　者：陆治国[1] 刘捷丰[1] 郑路遥[1] 秦煜森[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《电力自动化设备》2010年第9期42-45,共4页Electric Power Automation Equipment

摘　　要：针对传统的多输入变换器(MIC)具有电路结构复杂、电压增益低或开关器件电压应力高的问题,提出了一种新型双输入Boost变换器拓扑结构,该拓扑由2个完全一致的基本Boost变换器子拓扑构成,每个基本Boost变换器的功率开关管分别并联一个功率二极管,在单输入状态时一个始终导通,另一个始终关断;在双输入状态时,2个功率二极管全部关断。分析了2种输入状态下的工作原理及各个阶段的工作模态,结果表明该变换器适合工作在双输入状态,且在此状态时可以实现2种不同性质的电源输入,具有电压增益高、开关器件电压应力低等优点。研制了一台输出功率为240 W的双输入Boost变换器原理样机,通过实验验证了理论分析的正确性。As the traditional MIC（Multi-Input Converter） has complex structure,low voltage gain and high switch voltage stress,a double-input Boost converter is proposed,which consists of two identical basic Boost converters.A power diode is added in parallel to the power switch of each Boost converter.In single-input state,one diode is always on and the other always off,while in double-input state,both are off.The operating principle and modes of both states are analyzed and the results show that the double-input Boost converter has high voltage gain and low switch voltage stress when it operates in double-input state with different power supplies.A 240 W prototype is developed to verify the correctness of theoretical analysis.

关 键 词：多输入变换器 双输入Boost变换器 电压增益 电压应力 工作模态 

分 类 号：TM46[电气工程—电器]