In buck-boost converter, the duty ratio is adjusted to regulate the output voltage Vo at 30...
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In buck-boost converter, the duty ratio is adjusted to regulate the output voltage Vo at 30 V. The input voltage varies in a wide range from 30 to 50 V. The output power is 100 W. The inductor L = 300 H and the switching frequency is 50 kHz. The converter always operates in continuous-current mode. (a) Derive the expression for voltage conversion ratio. (b) Determine the range of duty cycle, D, for the given range of source voltage. (c) Calculate the average input current and the average diode current, when Vs = 35 V. (d) Design for C so that the output ripple voltage is limited to 2% of Vo when Vs = 30 V. (5 marks) (e) If the load resistor is changed so that the converter load current is decreased by 10%, what is the new average inductor current when Vs = 35 V. In buck-boost converter, the duty ratio is adjusted to regulate the output voltage Vo at 30 V. The input voltage varies in a wide range from 30 to 50 V. The output power is 100 W. The inductor L = 300 H and the switching frequency is 50 kHz. The converter always operates in continuous-current mode. (a) Derive the expression for voltage conversion ratio. (b) Determine the range of duty cycle, D, for the given range of source voltage. (c) Calculate the average input current and the average diode current, when Vs = 35 V. (d) Design for C so that the output ripple voltage is limited to 2% of Vo when Vs = 30 V. (5 marks) (e) If the load resistor is changed so that the converter load current is decreased by 10%, what is the new average inductor current when Vs = 35 V.
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Related Book For
Introduction to Statistical Quality Control
ISBN: 978-1118146811
7th edition
Authors: Douglas C Montgomery
Posted Date:
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