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# hw 5 - varies in the range of 36-72 V depending on the...

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1 EPOW/ECSE-4080 Semiconductor Power Electronics Homework #5 Due Date: Monday, 10/22/07 1. (20%) Textbook Problem 6.8 2. (20%) Consider an ideal buck-boost converter with the following parameters: input voltage = 28 V, output voltage = 15 V, switching frequency = 100 kHz, load resistance = 1 Ω . Select the inductor and output capacitor such that L L I i 1 . 0 Δ and mV 50 Δ C v . 3. (20%) A boost converter is used to boost the output of a fuel cell stack to 350 V. The stack voltage
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Unformatted text preview: varies in the range of 36-72 V depending on the operation condition of the fuel cells. The converter operates at a 20 kHz switching frequency. Assume continuous conduction mode and determine the minimal boost inductance value such that the input current ripple is no more than 200 mA. 4. (20%) Textbook Problem 6.9 5. (20%) Textbook Problem 6.14...
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• Spring '07
• M
• 20%, Switched-mode power supply, Fuel cell, textbook problem, Semiconductor Power Electronics, kHz switching frequency

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