版權(quán)說明:本文檔由用戶提供并上傳,收益歸屬內(nèi)容提供方,若內(nèi)容存在侵權(quán),請進行舉報或認領(lǐng)
文檔簡介
1、OutlineWhat is power electronics?The historyApplicationsA simple exampleAbout this courseWhat is power electronics?DefinitionRelation with information electronicsThe interdisciplinary naturePosition and significance in the human societyPower Electronics: A more exact explanation: is the electronics
2、applied to conversion and control of electric power. Range of power scale : milliwatts(mW) megawatts(MW) gigawatts(GW)Definition The primary task of power electronics is to process and control the flow of electric energy by supplying voltages and currents in a form that is optimally suited for user
3、loads.Conversion of electric powerOther names for electric power converter: -Power converter -Converter -Switching converter -Power electronic circuit -Power electronic converterElectric PowerConverterPoweroutputPower inputControl inputFrequency, magnitude, number of phasesAC (Alternating Current)Ma
4、gnitudeDC(Direct Current)Changeable properties in conversion Two types of electric powerClassification of power convertersDCACACAC to DC converter (Rectifier)AC to AC converter ( Fixed frequency : AC controller Variable frequency: Cycloconverter or frequency converter) DCDC to DC converter (Chopper)
5、 DC to AC converter (Inverter)Power outputPower inputPower electronic systemGeneric structure of a power electronic systemPower ConverterPower outputPower inputControllerFeedforward/FeedbackFeedback/FeedforwardReference(commanding) ( measurements of output signals ) ( measurements of input signals )
6、 Control is invariably required. Power converter along with its controller including the corresponding measurement and interface circuits, is also called power electronic system.Control inputTypical power sources and loads for a power electronic systemThe task of power electronics has been recently
7、extended to also ensuring the currents and power consumed by power converters and loads to meet the requirement of electric energy sources.-Electric Motor-light-heating-power converter -other electric or electronic equipment Power ConverterSourcePower inputPower outputLoadControllerReference-Electri
8、c utility-battery-other electric energy source -power converterFeedback/Feed forwardA Classification of electronics by processing objectRelation with information electronicsElectronicsInformation electronics: to process information Power electronics: to process electric power Other classifications o
9、f electronicsElectronicsVacuum electronics: using vacuum devices, e.g, vacuum tubes devicesSolid (Solid state) electronics: using solid state devices, e.g, semiconductor devicesElectronicsApplied electronics: application of electronic devices to various areas Physical electronics: physics,material,f
10、abrication, and manufacturing of electronic devicesThe interdisciplinary natureWilliam E. Newells description ElectronicsDevices,circuitsPower Static & rotating power equipmentPower ElectronicsContinuous, discrete ControlPower electronics is the interface between electronics and power.Relation with
11、multiple disciplines Power electronics is currently the most active discipline in electric power engineering worldwide. PowerelectronicsSystems & Control theoryCircuit theorySignal processing Simulation & computingElectronicsSolid state physicsElectromagneticsPower systemsElectric machinesPosition a
12、nd significance in the human society Electric power is used in almost every aspect and everywhere of modern human society.Electric power is the major form of energy source used in modern human society.The objective of power electronics is exactly about how to use electric power, and how to use it ef
13、fectively and efficiently, and how to improve the quality and utilization of electric power.Power electronics and information electronics make two poles of modern technology and human society information electronics is the brain,and power electronics is the muscle.The historyThe thread of the power
14、electronics history precisely follows and matches the break-through and evolution of power electronic deviceslate 1980smid 1970s19571900Mercury arc rectifier Vacuum-tube rectifier Thyratron Invention of ThyristorPower diode ThyristorApplication of fast-switching fully-controlled semiconductor device
15、sGTOGTRPower MOSFET Thyristor(microprocessor)IGBTPower MOSFETThyristor(DSP)Pre-history1st phase2nd phase3rd phaseApplicationsIndustrialTransportationUtility systemsPower supplies for all kinds of electronic equipmentResidential and home appliancesSpace technologyOther applicationsIndustrial applicat
16、ionsMotor drivesElectrolysisElectroplatingInduction heatingWeldingArc furnaces and ovensLightingTransportation applicationsTrains & locomotivesSubwaysTrolley busesMagnetic levitationElectric vehiclesAutomotive electronicsShip power systemsAircraft power systemsUtility systems applicationsHigh-voltag
17、e dc transmission(HVDC)Flexible ac transmission(FACTS)Static var compensation & harmonics suppression: TCR, TSC, SVG, APFCustom power & power quality controlSupplemental energy sources : wind, photovoltaic, fuel cellsEnergy storage systemsPower supplies for electronic equipmentTelecommunicationsComp
18、utersOffice equipmentElectronic instrumentsPortable or mobile electronicsservercomputerTelecommunicationResidential and home appliancesLightingHeatingAir conditioningRefrigeration & freezersCookingCleaningEntertainingApplications in space technologySpaceship power systemsSatellite power systemsSpace
19、 vehicle power systemsOther applicationsNuclear reactor controlPower systems for particle acceleratorsEnvironmental engineeringTrendsIt is estimated that in developed countries now 60% of the electric energy goes through some kind of power electronics converters before it is finally used. reduction
20、of energy consumption leads to less pollution reduction of pollution produced by power converters direct applications to environment protection technology Power electronics has been making major contributions to: -better performance of power supplies and better control of electric equipment -energy
21、saving -environment protectionA simple example A simple dc-dc converter exampleInput source:100VOutput load:50V, 10A, 500WHow can this converter be realized?Dissipative realizationResistive voltage dividerDissipative realizationSeries pass regulator: transistor operates in active regionUse of a SPDT
22、 switchSPDT: Single pole double throwThe switch changes the dc voltage levelAddition of low pass filterAddition of (ideally lossless) L-C low-pass filter, for removal of switching harmonics: Choose filter cutoff frequency f0 much smaller than switching frequency fs This circuit is known as the “buck converter”Addition of control system for regulation of output voltageMajor issue
溫馨提示
- 1. 本站所有資源如無特殊說明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請下載最新的WinRAR軟件解壓。
- 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
- 3. 本站RAR壓縮包中若帶圖紙,網(wǎng)頁內(nèi)容里面會有圖紙預覽,若沒有圖紙預覽就沒有圖紙。
- 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
- 5. 人人文庫網(wǎng)僅提供信息存儲空間,僅對用戶上傳內(nèi)容的表現(xiàn)方式做保護處理,對用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯,并不能對任何下載內(nèi)容負責。
- 6. 下載文件中如有侵權(quán)或不適當內(nèi)容,請與我們聯(lián)系,我們立即糾正。
- 7. 本站不保證下載資源的準確性、安全性和完整性, 同時也不承擔用戶因使用這些下載資源對自己和他人造成任何形式的傷害或損失。
最新文檔
- 2026年鎮(zhèn)江市高等??茖W校高職單招職業(yè)適應性測試備考試題及答案詳細解析
- 2026年黑河五大連池市農(nóng)村中心敬老院公開招聘政府編外用工人員8人參考考試題庫及答案解析
- 2026年新疆交通職業(yè)技術(shù)學院單招綜合素質(zhì)筆試參考題庫含詳細答案解析
- 2026年鶴崗市向陽區(qū)公開招聘公益性崗位人員34人筆試模擬試題及答案解析
- 2026年山東藝術(shù)設(shè)計職業(yè)學院單招綜合素質(zhì)筆試備考題庫含詳細答案解析
- 2026年重慶安全技術(shù)職業(yè)學院單招職業(yè)技能考試參考題庫含詳細答案解析
- 2026年山西華澳商貿(mào)職業(yè)學院單招綜合素質(zhì)考試模擬試題含詳細答案解析
- 2026北京通州區(qū)消防救援支隊第一批次區(qū)級政府專職消防員招錄41人考試重點題庫及答案解析
- 2026年青島濱海學院單招綜合素質(zhì)筆試備考試題含詳細答案解析
- 2026年遼寧機電職業(yè)技術(shù)學院高職單招職業(yè)適應性測試模擬試題及答案詳細解析
- GB/T 10810.1-2025眼鏡鏡片第1部分:單焦和多焦
- 新版GCP培訓課件
- 單鳳儒《管理學基礎(chǔ)》教案
- 客戶開發(fā)流程圖
- 音樂節(jié)活動場地租賃合同
- 風險管理顧問協(xié)議
- 一年級下冊字帖筆順
- 2024屆高考語文復習:散文訓練王劍冰散文(含解析)
- SWITCH暗黑破壞神3超級金手指修改 版本號:2.7.7.92380
- 二尖瓣狹窄講課課件
- 腸造瘺術(shù)后護理查房
評論
0/150
提交評論