本帖最后由 stormf1 于 2009-12-15 17:11 编辑
The dc power supply for the inverter is a single-phase diode bridge rectifier in which neither dc smoothing capacitor nor reactor is connected except for a high frequency capacitor of 0.47 pF.Then the dc voltage across the high frequency capacitor is fluctuating at 120 Hz,that is,twice as high as the
line frequency of 60 Hz.This makes a great contribution to shaping the line current of the rectifier into sinusoid and unity power factor.
说这里直流供电没有滤波电容和电感,但是连有高频电容?
整流器后面接的电容是高频电容而不是滤波电容,这个怎么理解?
整流后面的电容不就是滤波电容么?
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