exam5solution - EE321 Exam 5 Solution Outline Problem 1 Ru...

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EE321 Exam 5 Solution Outline Problem 1 R u 100 := R i 25 := k 1000 := R g g () kg := L N 2 R u R i + 2k g + = W c N 2 i R u R i + 2k g + = f e N 2 i R u R i + g + 2 2 k = g 110 3 := f e 10 := i1 := N f e i R u R i + g + 2 := N 8.98 10 0 × = We'll use 9 turns
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Problem 2 Gate signal: Alternates between on (for 0.5 ms) and off (0.5 ms) Armature voltage: when switch on it is 12-2=10 V; when switch is off it is - 1 V Armature current: when switch is on it ramps from 8 A to 12 A; when switch is off it ramps from 12 A to 8 A Switch current: when switch is on it looks like armature current; when switch if off it is zero Diode current: when switch is on it is zero; when switch of off it looks like armature current Problem 3 Switch On v dc r a i abar k v ω r + pi a + = pi a v dc r a i abar k v ω r L aa = i mx i mn T on v dc r a i abar k v ω r L aa = 1 () Switch off v dc r a i abar k v ω r + pi a + = pi a v dc r a i abar k v ω r L aa = i mn i mx
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This note was uploaded on 02/19/2012 for the course ECE 321 taught by Professor Staff during the Spring '08 term at Purdue University-West Lafayette.

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exam5solution - EE321 Exam 5 Solution Outline Problem 1 Ru...

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