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University of Wollongong ECTE412: Power Electronics and Drives Tutorial 3 1. watch 1 Solution: (a) 2D-1, D, -(1-D) (b) (c) L = 90mH 2. A limp chopper supplies Vo = 10V to a resistive load of R = 5 from a Vs = 25V source. The re rawal frequency is fs = 10kHz. Find: (a) art ratio D (b) the minimum rank of induction L state to en positive(predicate) that the inductance sure iL is continuous (c) minimum and maximum measure of the inductor occurrent iL if L is 2mH (d) power from source, look to L is as per while 1c (e) power to the load, assuming L is as per part 1c. live with the load electric potence to be held constant by the capacitor. respond: a) 0.4 b) 150uH c) 1.7A, 2.3 A d) 20W e) 20W 3. Consider a appoint convertor in which the provide potential Vs = 50V, the take voltage is Vo = 30V, the induction is L = 250?H, the condenser is C = 400?F and with a transmutationing frequency of 10kHz. The converter supplies a load of R = 10. (a) affirm that the inductor current iL is continuous. (b) Calculate the inductor rumple current (c) Sketch the inductor current waveform, noting the state of the switch in each section.

(d) Calculate the ripple voltage ?Vo at the create of the buck converter. a) CCM b) 4.8A d) 0.5% or 0.15V 4. mull that the buck converter of gesture 2 is reconfigured as a boost converter, in which the supply voltage Vs = 30V, the take voltage is Vo = 50V, and R, L, C and fs are unchanged. (a) Calculate the new occupation cycle. (b) Calculate the add inductor current. (c) Show that the inductor current is continuous. (d) Calculate the output ripple voltage coition to the average output voltage. Answer: a) 0.4 b) 5 A c) CCM d) 1% 5. If you motivation to posit a wide-eyed essay, order it on our website: Orderessay

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