输出电压宽范围可调变换器的设计  

Design of Wide Output Range Adjustable Converter

作　　者：颜红[1] 程荣龙[1] 王艳春[1] 

机构地区：[1]蚌埠学院机械与电子工程系,安徽蚌埠233030

出　　处：《蚌埠学院学报》2015年第1期5-9,共5页Journal of Bengbu University

基　　金：蚌埠学院自然科学研究项目(2011ZR14);安徽省高等学校省级自然科学研究项目(KJ2013Z193)

摘　　要：在开关电源应用场合中,很多都需要输出电压宽范围可调,因此提出了用Buck和Boost变换器模块串并组合来实现输出电压宽范围可调功能。首先改进了并联结构,并提出了模块分时控制策略;然后对两种串联电路结构进行了简化,提出了开关同开同关和分时控制两种控制方式;接着对三种电路及其控制方式的优缺点进行了对比;最后对并联方式和Buck-Boost串联方式进行了仿真验证,仿真结果证明了所设计电路及控制方式的有效性和可行性。In the switching power supply applications, wide range of adjustable output voltage is often re- quired. Series and parallel combinations with Buck and Boost converters were presented to make the out- put adjustment possible. First, parallel structure was improved, and the time sharing control strategy was a- dopted. Then two kinds of series circuit structures were simplified, and two control strategies of switches with turning on and off simultaneously and time-sharing control were put forward. Then the three circuits as well as their advantages and disadvantages of control method were compared. Finally, series and Buck -Boost parallel methods were made by the simulation verification, and the simulation results verified the effectiveness and feasibility of the referred circuits and control strategies.

关 键 词：宽范围可调 BUCK变换器 BOOST变换器 串并联 分时控制 

分 类 号：TM464[电气工程—电器]