Quiz1

Quiz1 - the average value of the inductor current(3 points...

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ECE433- Quiz I - January 300 2012 Name: PUID: l) Given the following converter, assume that at any instant the switch will move between position I and2, with a switching frequency of fr* and a duty cycle of 75yo. + t'(r) 1,,,. ' .trrb \iL(r) +. \* vrt) V-(l)r'Yl {"\_ I I (i) Determine the converter voltage conversion ratio (2 points). a ¿t, ?tr: swi{ch trn þsthon r '\ âT;."; '?t : st'liich un þosihon 2 + vr(Ff- L t-'.,-'ïFl1, ln i ylJì ,;X{?ô-J v,(f)=vg:vlf] ^v5- r vLü;[,tì :únù"i'-þ ;,,;=lìt,-ryrrr-Lo ,l ,' Bg us,rng unfuclon Volt-sec uq,r,rfi*',, økln"{riñg fu Con\flStan fiahO 1vJùrs=o ,=) l\t(vg-v) *-+(-v))=q .-) ,' âut => tv(o) =+ (ii) Determine the

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Unformatted text preview: the average value of the inductor current (3 points). =3 4 n15 L ( zr, (f -Ul *'-b-11\ã'., r-L Rl 4 L R (htculahnq l+,, ûtturyF vatue 6l ll, urndlcfon c\$ìî-qmf bu tlxng caþact{on d,*g, baJwa eqrchon 1tc) i-s =0 =) (r,-Ë)) = o TL--/ (iii) Draw the inductor current waveform and calculate the inductor current ripple (3 points). I_. V R þTs G 4 Vo *V 2\lt :--- --.'-L T'Ts t-l s4t(f,rs ò Air= P Fq e ='1-T(å-'â =ayek = l!-Ts €u S,Ts<l(rs /4 J-L *2Ltt--. .-L'rs 4 "à ALI (iv) Calculate the amplitude of ouþrrt voltage ripp,te (2 points). ¿;ü-) V¿tl-\ =3 \q .- _--+ 32L G qt'-L atuþ-1) l-g -- c (znv'1 Â\lc, ry (c...
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