Answer Happy

Question 4 A forward converter has an input voltage, Vs = 250 V, output voltage, V. = 50 V, and a load resistance, R = 250. The switching frequency is 350 kHz. (a) Explain, in your own words, why it is necessary to have a reset (tertiary) winding with Nas 1-) in a forward converter. [6 marks) (b) For the given specifications, determine the transformer primary: secondary tums ratio, N./N2, such that the duty ratio is 0.3. [2 marks] (c) Calculate the output inductance Lx such that the minimum current in Lx is 40% of its average current J7 marks) (d) Give two advantages of a forward converter over a buck converter. Include example calculations based on the given specifications to illustrate your answer. 15 marks] D a