电力电子技术双语课件第56章.ppt

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关键词：: 电力电子技术双语课件 56

资源描述：: 1、Power ElectronicsChapter 5 DC to DC Converters(Choppers)PowerElectronics2PowerElectronics3PowerElectronics4complement D:D=1-DPowerElectronics5Fourier analysis:Dc component=average valuePowerElectronics6PowerElectronics7PowerElectronics8PowerElectronics9Actual output voltage waveform of buck converte
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10、ics584 32 35 3302 uaouauab2uac2t1t2t3VT5VT1VT3VT4VT6VT2VT6VT5PowerElectronics59432353302uaouauab2uac2VT5VT1VT3VT4VT6VT2VT6VT5VT5VT1VT3VT5VT4VT2VT4VT6PowerElectronics60PowerElectronics61MControl period=M*Line period=24MO=2NM3M2Muou1uo,iowtU12Ru1uoioVT1VT2PowerElectronics62Harmonic order as to control
11、 frequencyHarmonic order as to line frequency051234012 142 4 61080.60.50.40.30.20.1In/I0mPowerElectronics63PowerElectronics64PowerElectronics65ououououPowerElectronics66PowerElectronics67ZPNuoOuoP=0P=2P=2wtOutput voltageAverage output voltagePowerElectronics68tttttOOOOOuo,iouoiot1t2t3t4t5uouPuNuoiPi
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