Topic 19Main contentsConverter based Power Factor Correction
Main contents • Converter based Power Factor Correction Topic 19
18-1IntroductionPower quality has become an important issue1GenerationofCurrentHarmonics（电流谐波的产生）Diode-Rectifier BridgeidLineinputvdFigure 18-2Dioderectifier bridge
18-1 Introduction Power quality has become an important issue 1 Generation of Current Harmonics (电流谐波的产生) Diode-Rectifier Bridge
Single-phase Diode-Rectifier Bridge waveform150m.V(tall(a-3Va,cti2)Single-phase diode-bridge rectification for two values of L
Single-phase Diode-Rectifier Bridge waveform
3-phase Diode-Rectifier Bridge waveform(a)(6)EffectofL,variation(a)L,=o.lmH:(b)L,=3mH
3-phase Diode-Rectifier Bridge waveform
Typical Harmonics in the Input CurrentTable 18-1 Typical Harmonics in a Single-Phase Input CurrentWaveform with No Line Filtering15175791113h3L%2.95.74.10.80.48.173.236.6-·Single-phase diode-rectifier bridge
Typical Harmonics in the Input Current • Single-phase diode-rectifier bridge