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University of Wollongong ECTE412: Power Electronics and Drives Tutorial 3 1. contour 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 transposition frequency is fs = 10kHz. Find: (a) profession ratio D (b) the minimum set of induction L direct to en original that the induction sure iL is continuous (c) minimum and maximum take to be of the inductor current iL if L is 2mH (d) power from source, judge L is as per cave in 1c (e) power to the load, assuming L is as per part 1c. sweep up the load electric potential drop to be held constant by the capacitor. arrange: a) 0.4 b) 150uH c) 1.7A, 2.3 A d) 20W e) 20W 3. Consider a appoint convertor in which the egress voltage Vs = 50V, the production voltage is Vo = 30V, the induction is L = 250?H, the condenser is C = 400?F and with a whiping frequency of 10kHz. The converter supplies a load of R = 10. (a) affirm that the inductor current iL is continuous. (b) Calculate the inductor shuffle current (c) Sketch the inductor current waveform, noting the state of the switch in each section.

(d) Calculate the ripple voltage ?Vo at the product of the buck converter. a) CCM b) 4.8A d) 0.5% or 0.15V 4. suppose that the buck converter of interrogative 2 is reconfigured as a boost converter, in which the supply voltage Vs = 30V, the siding voltage is Vo = 50V, and R, L, C and fs are unchanged. (a) Calculate the parvenue occupation cycle. (b) Calculate the count inductor current. (c) Show that the inductor current is continuous. (d) Calculate the output ripple voltage sexual intercourse to the average output voltage. Answer: a) 0.4 b) 5 A c) CCM d) 1% 5. If you regard to posit a full-of-the-moon essay, order it on our website: Orderessay

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