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project2

# project2 - tion routine to take the time-domain current...

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Pekarek-ECE633 2/2/12 1 ECE633 - Project 2, Due February 16, 2012 1) For the transformer described in Section 4.8 of the text, create a dynamic model that includes saturation using the method described in class. The magnetizing flux linkage and magnetiz- ing currents are shown in Table 1. Use the model to perform the studies 1 and 2 described under Section 4.8.1 (page 113) of the text. Provide the discussion that is mentioned on page 113 and 114. One focus should be to compare the steady-state currents obtained from your model with those obtained from an analytical calculation using the ‘T’ equivalent circuit model. 2) Utilize the model you created in 1) (with some modification to model an open-circuit second- ary) to simulate the method of obtaining transformer parameters using stepped DC source inputs. Use the simulation to obtain and versus time data. Create a numerical integra-

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Unformatted text preview: tion routine to take the time-domain current data to obtain and versus time. Use the results to obtain versus and versus . From these, determine the transformer inductances and the resulting versus . Compare the values you obtain from your test with the values you have in the model. Table 1: Magnetizing Current and Flux Linkage (A) (V*s) 0.05 0.1 0.1 0.22 0.2 0.32 0.25 0.35 0.3 0.37 0.4 0.39 0.5 0.4 0.75 0.41 1.25 0.425 1.75 0.435 2.25 0.44 i m λ m i 1 v 2 ′ λ 1 λ 2 ′ i m λ m i 1 λ 1 i m λ m Pekarek-ECE633 2/2/12 2 3) Create a 3-phase transformer model described in Section 4.8.4 (Page 118). Use the model to compute the studies (and address the questions) specified under ‘current and voltage ratios’ on pages 118 and 119. When submitting the project, please include all .m and .mdl files....
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