Question

Calculate the output voltage of the Buck-Boost converter if the supply voltage is 14 V and duty cycle value is .85.

(a) 79.3 V

(b) 45.5 V

(c) 86.5 V

(d) 54.7 V

I got this question by my college director while I was bunking the class.

I'd like to ask this question from Solid State Controlled Drives in portion Introduction to Solid State Controlled Drives of Electric Drives

Answer 1

Correct answer is (a) 79.3 V

Explanation: The output voltage of the buck-boost converter is Vo = D×Vin ÷ (1-D)=.85(14)÷.15=79.3 V. It can step up and step down the voltage depending upon the value of the duty cycle. If the value of the duty cycle is less than .5 it will work as a buck converter and for duty cycle greater than .5 it will work as a boost converter.