Hi,
I've started problem 9-2, and I've run into an issue. I began with the same analysis as the text and the lecture notes. I used equation 12.89 (for Buck) and substituted in Fm = Fm/(1+s/wx). The denominator becomes 3rd order which means you can't simply rearrange to find new expressions for Qc and wc.
Do we have to do some factoring of the denominator, or some approximation to isolate the effective high frequency pole?
Thanks.
-Drew
I used the equation of d^(t) = Fm[ic^-iL^-Fg*vg^-Fv*v^] and solved for L*diL^/dt (solved for d^)... those two equations can be set equal to each other and you can get a value for iL^/ic^ in terms of Fm, s, m1 and m2... then you can plug through the algebra to solve for fx...
ReplyDeleteHi Olga,
DeleteWhere did you get the second equation, L*diL^/dt ...?
Thanks.
-Drew