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1、摘要随着科技和现代工业的发展，变频电源在当今社会的发展起着非比寻常的作用。由于世界各国电网指标不统一，出口电器厂商需要电源模拟不同国家的电网状况，为工程师在设计开发、生产线测试及品保的产品检测、寿命、过高压/低压模拟测试等应用中提供纯净可靠的、低谐波失真、高稳定的频率和稳压率的正弦波电力输出；进口原装电器、设备的用户也需要对我国电网进行变压、变频以保证进口电器、设备的正常运转；满足航空电子及军事设备高频的需求。本篇论文设计的变频电源属于单相正弦波交流电源(AC-DC-AC)。此次电源系统设计包括主电路、控制电路和保护电路。论文首先介绍了变频电源的发展情
2、况；然后阐述了变频电源的工作原理；接着介绍电源系统(EG8010)方案的确定；紧接着详细介绍了系统电路设计，包括变频控制电路、保护电路以及驱动电路；其中变频控制电路采用了芯片EG8010线性可调电路；最后介绍了AT89C51单片机辅助系统的软件和硬件设计，包括设计的具体过程和调试结果，并给出了系统原理图和程序清单。关键词：变频电源，EG8010，MOSFET，单相正弦波交流电源，逆变控制电路ABSTRACTWiththedevelopmentofmodernindustry,scienceandtechnology,variablefrequencyp
3、owersupplyintoday'ssocietyplaysanunusualrole.Duetothegridindexisnotuniformaroundtheworld,exportelectronicsmakersneedpowersimulationgridconditions,indifferentcountriesforengineersindesign,development,productionlinetestingandqualityassuranceofproducttesting,lifespan,highvoltage/lo
4、wvoltagesimulationtestapplicationsprovidecleanandreliable,lowharmonicdistortion,highstablefrequencyandvoltageregulationrateofsinewavepoweroutput.Importoriginalelectricalappliances,equipmentusersalsoneedtothepowergridvariablevoltageandfrequencytoensurethenormaloperationofimported
5、equipmentinChinasoastomeettheneedsofavionicsandhighfrequencyofmilitaryequipment.Thispaperdesignfrequencyconversionpowerbelongstothesingle-phasesinewaveACpower(AC-DC-AC).Thepowersupplysystemdesignincludingmaincircuit,controlcircuitandprotectioncircuit.Thedevelopmentofvariablefreq
6、uencypowersupplyisfirstlyintroducedinthepaper.Thentheworkingprincipleoffrequencyconversionpowerisexpoundedon.Theschemeofpowersupplysystem(EG8010)isappliedinthedevelopment.Andthesystemcircuitdesign,includingthefrequencyconversioncontrolcircuit,protectioncircuitanddrivercircuitare
7、completed.LinearadjustablecircuitofTheEG8010chipisadoptedtocontrolthefrequencyconversion.Finally,thesoftwareandhardwareofintroducedtheAT89C51MCUauxiliarysystemaredesigned,includingthespecificprocessofthedesignanddebugresults,andthesystemschematicdiagramandtheprogramlistingisgive
8、n.KeyWords:Variablefrequencypowersupply,EG8010,
