高电压宽范围输入低电压输出的DC-DC辅助电源设计

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1、万方数据2015年2月电工技术学报v01．30No．3第30卷第3期TRANSACTIONSOFCHINAELEcTROTECHNIcALSOCIETYFeb．20l5高电压宽范围输入低电压输出的DC．DC辅助电源设计胡亮灯孙驰赵治华艾胜(海军工程大学舰船综合电力技术国防科技重点实验室武汉430033)摘要高电压宽范围输入的DC．DC辅助电源技术是中高压、大容量电力电子变流系统的关键辅助技术。基于双管反激电路，本文设计了一个高电压宽范围300～2500V输入，低电压24V输出的DC—DC辅助电源样机，并给出了电源详细的设计方案。相比传统辅助电源，设计的辅助电源启动支路

2、在电源工作后可自动断开，实现了电源输入电压范围更宽目标；电源主电路由变压器隔离，控制、反馈电路由辅助绕组供电，确保了电源输入／输出高电压隔离；开关管驱动电路采用带耦合电感的脉冲变压器，满足了驱动信号高压隔离和同步驱动要求。此外，计算电源效率的结果表明，双管反激辅助电源更适合高电压输入场合。最后，进行了相关实验，结果验证了所设计的高电压宽范围输入的DC．DC辅助电源方案可行性和正确性。关键词：DC—DC辅助电源双管反激高压直流取电宽范围中图分类号：TM46DesignofWide—RangeHighVoltageInputLowVoltageOutputDC-DCAux

3、iliaryPowerSupplyHuLiangdengSunChiZhaoZhihuaAiSheng(NationalKeyLaboratoryforVesselIntegratedPowerSystemTechnologyNavalUniversityofEngineeringWuhan430033China)AbstractTheuseofhigh--voltageandwide--rangeDC·-DCauxiliarypowersupplyforthemedium·-highvoltageandlarge·-capacitypowerelectronicco

4、nvertersystemisakeyauxiliarytechniqueBasedonthedouble—transistorflybackcircuit，thepaperpresents31"1auxiliarypowersupplyprototypewithahigh—voltage，wide-range300V～2500Vinputandalow．voltage24Voutput，andoffersadetaileddesignschemefortheauxiliarypowersupply．Comparedwiththeconventionalauxilia

5、rypowersupply，thedesignedauxiliarypowersupplystart—upbranchcanswitchoffautomaticallywhenauxiliarypowerworks，achievingthepurposeofawider-rangepowerinput．Tosarisfythedemandoftheisolationofhigh—voltagepowersupplyinputandlow—voltageoutput，thefeedbackcircuitvoltageistobeobtainedfromauxiliary

6、winding．Thedriveschemeforauxiliarypowersupplyreferstotheadoptionofthetransformergatedrivewithcouplinginductancebalancekernel，therebysatisfyingthetwo—tubedriversignalshigh—voltageisolationandimprovingthesynchronismofdrivesignals．Moreover，theresultofcalculatingtheefficiencyoftheauxiliaryp

7、owersupplyindicatesthattheauxiliarypowersupplyismoresuitableforhigh-voltageinput．Finally,therelatedexperimentsdoneontheauxiliarypowersupplyverifythatschemedesignedfortheauxiliarypowersupplywithhigh．voltageinputandlow-voltageoutputispracticableandcorrect．Keywords-DC—DC，auxiliary