Challenge

Project 1

MMayank Kumar Srivastava19 Feb 2023

SOL)

BUCK CONVERTER:

Buck converter step down DC voltage. It consists of Inductor, Capacitor and two switches which are transistor and diode. Transistor is a switch that operates with on and off state which is controlled by the Gate signal.

Block diagram of buck converter:

CALCULATION:

Block diagram of buck converter in Simulink:

CASE:1 Vin=40V

PULSE GENERATOR:

WAVEFORM:

ZOOMIN:

Results:

*INPUT VOLTAGE*	40V
*OUTPUT VOLTAGE*	28V
*MOSFET VOLTAGE*	40V
*MOSFET CURRENT*	18A

CASE 2: Vin=50V

PULSE GENERATOR:

WAVEFORM:

ZOOMIN:

Results:

*INPUT VOLTAGE*	50V
*OUTPUT VOLTAGE*	30V
*MOSFET VOLTAGE*	50V
*MOSFET CURRENT*	18A

BOOST CONVERTER:

Boost converter is used to step up the input waveform. In continous conduction mode, the inductor current flows continously during the operation of the converter.The two semiconductors during the operation of the converter. The two semi conductors switches in operation are diode and Mosfet which operate with the PWM pulses. MOSFET is a switch whose gate pulses are given by the PWM pulse generator based on the duty requried to the switch.

CALCULATION:

BLOCK DIAGRAM OF BOOST CONVERTER IN SIMULNK:

CASE 1: Vin= 20V

PULSE GENERATOR:

WAVEFORM:

ZOOMIN:

Results:

*INPUT VOLTAGE*	20V
*OUTPUT VOLTAGE*	38V
*MOSFET VOLTAGE*	39V
*MOSFET CURRENT*	14A

CASE 2: Vin=30V

PULSE GENERATOR:

WAVEFORM:

ZOOMIN:

Results:

*INPUT VOLTAGE*	30V
*OUTPUT VOLTAGE*	40V
*MOSFET VOLTAGE*	40V
*MOSFET CURRENT*	19A

CUK CONVERTER:

The Cuk converter is a type of buck-boost converter with low ripple current. A Cuk converter can be seen as a combination of boost converter and buck converter, having one switching device and a mutual capacitor, to couple the energy.