开关电源模块并联供电系统报告.pdf

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1、开关电源模块并联供电系统摘要：针对大功率负载的情况,选用单台大功率电源有很多技术上的难题需要克服。本文介绍一种开关电源模块并联供电系统，其具有加大功率、自动均流、手控均流的功能。该供电系统由电压转换模块、DC/DC转换模块、单片机控制模块以及显示模块等组成。通过A/D对电路进行采样，使用单片机控制PWM占空比来改变DC/DC模块电压和电流，从而达到改变电源功率且对电流进行分配的功能，同时电路具有过流保护功能对系统进行保护。测试结果表明本系统满足设计要求且工作稳定。关键词：DC/DC模块、PWM、A/D转换Switchingpowersupplymo

2、dulesinparallelpowersupplysystemABSTRACT：Ifthechoiceofasinglepowersupplytherearemanytechnicalobstaclestoovercomeforhigh-powerload.Thispaperintroducesaswitchingpowersupplymodulesinparallelpowersupplysystem,whichhasincreasedpower,autocontrolofshuntandhandcontrolofshuntfunction.I

3、tsmainlybythevoltageconversionmodule,DC/DCconvertermodule,single-chipcontrolmodule,displaymoduleandothercomponents.ByA/Dsamplingcircuit,thesingle-chipcontrolthePWMdutycyclewhatchangeDC/DCmodulevoltageandcurrenttoachievethechangeofcurrentinelectricalpoweranddistribution,whileov

4、er-currentprotectioncircuittoprotectthesystem.Testresultsshowthatthesystemmeetsthedesignrequirementsandjobstability.KEYWORDS:DC/DCmodule,PWM,A/Dconversion目录1、引言.....................................................................................................................

5、...........................................12、系统方案设计......................................................................................................................................................12.1、系统方案设计................................................................

6、..........................................................................12.2单元模块方案设计.....................................................................................................................................22.2.1、电压转换部分设计方案.........................................

7、.....................................................................22.2.2、显示部分设计方案......................................................................................................................22.2.3、DC/DC模块设计方案.........................................................

8、..........................................................32.