ME305_Fall09_HW5

# ME305_Fall09_HW5 - ME 305 Fall-2009 Asif Sabanovic HW#5 Due...

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ME 305 Fall-2009 Due Dec. 31, 2009 Asif Sabanovic 12:30 PM HW#5 In this problem you will have opportunity to practice the techniques learned so far on some unusual but very interesting converter structures. At first a simpler converter is introduced as depicted in the following figures. Fig.1.a Fig.1.b 1) Fig.1.a shows a derivative of the boost converter, so-called tapped inductor boost converter. a. Assuming all components are ideal (ideal transistor, diodes, switches and perfect coupling between the windings with zero winding resistance); find the DC voltage gain of the converter ܯ ൌ ݒ ܸ . b. Draw the salient features of the input current labeling all important quantities. For numerical value assume ܦ ൌ 0.8 . c. The autotransformer version of Fig.1.a (tapped inductor) has its cousin; the transformer version of Fig.1.b. For this converter, find the voltage gain and draw the salient features of the source current ݅ for both the general case of 1:N turns ration as well as for the special case of 1:1 turns ratio.

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