Electrical Engineering ⇒ Topic : Ripple factor

Peter
 
Ripple factor The ripple factor is defined as the ratio of the effective value of the AC component of voltage or current to the direct or average value. The effective value of current is given by ........... (1) ............. (2) where I_{1}, I_{2}, ... are the r.m.s. values of the fundamental, second harmonic, etc. and I^{2}_{a.c} the sum of squares of the r.m.s. values of the components. The ripple factor ϒ is given by ............... (3) For a halfwave rectifier,
Hence ripple factor ............... (4) The ripple frequency in a halfwave rectifier circuit is the same as the fundamental AC frequency, and hence halfwave method of rectification with singlephase AC supply is not used for power charging. Also the r.m.s. ripple voltage exceeds the DC voltage and hence is a poor converter to DC  
 
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