Dear Sir/Ma'am,
We are trying to make a 3.3kWatt EV charger with 2 Interleaved Boost PFC.
We read the old document SPRA902A July2005 "AverageCurrentModeControlledPowerFactorCorrectionConverterusingTMS320LF2407A".
On Page 8 the Voltage Loop power stage transfer function is given as
Gvc = (km*zf*(vmin^2))/(2*kf*ks*vo*(vmax^2));
for Resistive load Zl = ro;
with zf = (1/((1/ro)+(1/ro)+(s*c)));
But the transfer function we derived ourselves comes out to be
Gvc = (km*kf*zf*(vmin^2))/(2*ks*vo*(vmax^2)); => Here we are getting kf term in Numerator
withzf = (1/((1/ro)+(1/ro)+(s*c)));
We checked the forum for similar problems and found below link
Here the transfer function was mentioned as Gvc = Zf/(Km*Kf*Ks*Vo)
We are bit confused about the origins/derivation of this transfer function.
Also, we needed some references about the Discretization Method used for converting S-Domain to Z-Domain (Forward Euler, Backward Euler or Tustin Transformation).
Kindly revert back as soon as possible!!
Your help will be appreciated!!
Thanks
