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1、第35卷第7期高电压技术Vol.35No.72009年7月31日HighVoltageEngineeringJuly31,20091695电除尘器用高频高压脉冲数控电源111211耿涛,李格,曹亮,周银贵,王海田,李喆(1.上海交通大学电气工程系,上海200240;2.中国科学技术大学国家同步辐射实验室,合肥230029)摘要:脉冲或间歇供电模式可以大幅度降低电除尘器能耗和提高除尘效率。为了实现电除尘器的脉冲供电,减少脉冲电源的成本和体积,在IGBT高性能器件基础上,综合利用串联谐振逆
2、变技术和倍压整流技术,搭建了一高频高压脉冲数控电源,并用PSpice软件对此电源进行了仿真,分析了倍压器所用电容和负载电阻对倍加器输出电压的影响。最后给出基于LabVIEW环境的倍加器型高频高压电源实验,其输出电压峰值达到了30kV,频率为70kHz。实验的结果验证了频率、输出的可控性及仿真的正确性,仿真和实验结果可用于数控闭环系统的设计和构建。鉴于目前国内火电脱硫主流模式是化学湿法,产生大量无经济利用价值的低品位石膏,脉冲或间歇供电模式在火电领域推广可以大幅度提高除尘效率,从而使石膏变白并提高石膏品位,变废为宝
3、,达到节能减排目的。关键词:静电除尘器;供电模式;高频高压脉冲电源;倍加器;PSpice仿真;LabVIEW;火电脱硫;节能;减排中图分类号:TN86;X701.3文献标志码:A文章编号:1003-6520(2009)07-1695-05DigitalHigh-frequencyHigh-voltagePulsePowerSupplyforElectrostaticPrecipitators111211GENGTao,LIGe,CAOLiang,ZHOUYin-gui,WANGHa-itian,LIZhe(1.D
4、epartmentofElectricalEngineering,ShanghaiJiaoTongUniversity,Shanghai200240,China;2.NationalSynchrotronRadiationLaboratory,UniversityofScienceandTechnologyofChina,Hefei230029,China)Abstract:Withtheenhancedcollectionefficiency,theenergyconsumptionofelectrostati
5、cprecipitators(ESP)canbesignificantlydecreasedbythemodesofpulseorintermittentenergization.Akindofhigh-frequencyhigh-voltagepulsepowersupplyforESPbasedonseriesresonantinvertertechnologyandvoltagemultipliertechnologyisfabrica-tedwithIGBT,thepowersupplyhasvirtue
6、sofsmal-lsizeandlow-price.Thepaperdiscussesthetheoryofdigitalhigh-frequencyhigh-voltagepowersupplyforESP,simulatesitscircuitsystembyPSpice,andanalyzestheeffectsofcapacitorinmultiplierandtheloadresistanceontheoutputvoltage.Thepowersupplywastestedsteadilyinlabo
7、-ratory,andtheoutputvoltagewas30kVaswellasfrequencywas70kHz.Theexperimentswereperformedtover-ifytheaccuracyofsimulationandthecontrollabilityofoutputpulsevoltage.ThesimulationwasusedtodesignandimplementESPpulseenergizationwithclosedloopsystem.Thedesulfurizatio
8、nforcoalpowerplantwhichispres-entlydeterminedbychemicalwetmethodproduceslotsoflow-valuegypsumby-products.ImplementationpulseorintermittentpoweringmodeinupstreamESPwillimprovethecollection
