Terminologies used in Single Phase Uncontrolled Rectifier
Let “f” be the instantaneous value of any voltage or current associated with a rectifier circuit, then the following terms, characterizing the properties of “f”, can be defined.
Peak value of f :
As the name suggests fˆ = |f|maxover all time.
Average (DC) value of f(Fav): Assuming f to be periodic over the time period T
RMS (effective) value of f(FRMS) :
For f , periodic over the time period T,
Form factor of f(fFF) :
Form factor of ‘f ‘ is defined as
Ripple factor of f(fRF) :
Ripple factor of f is defined as Ripple factor can be used as a measure of the deviation of the output voltage and current of a rectifier from ideal dc. Peak to peak ripple of f( ˆfpp) By definition ˆfpp= fmax – fmin over period T
Fundamental component of f(F1):
It is the RMS value of the sinusoidal component in the Fourier series expression of f with frequency 1/T.
Harmonic component of f(FK):
It is the RMS value of the sinusoidal component in the Fourier series expression of f with frequency K/T.
Crest factor of f(Cf) :
Distortion factor of f(DFf) :