Project 1 - Loss calculation for a DC/DC converter-MATLAB

• Extending the learned lessons in previous module, you will be diving into another power electronics concept on your own.

• Design of boost converter, and calculating the loss of different components including power switching device and deriving efficiency of boost converter. This is applicable in power supply industry, electric vehicles etc where DC-DC converter is required to boost the voltage from DC source. All the aspects of this project with loss calculation, device selection, simulation etc are industry relevant.

Vin = 48v

inducter L = 13uH with 5m ohm serise resistance

Capaciuternce C - 400uf

Gate driver pulse

mosfet parameters

total resistaNSE OF MOEFET Rm = 160 mohm

Dipse series resistance Rd = 2mohm

out put voltage

mosfet current

Inducter current

Diodse Voltage

Calculation

here my converter efficiency is 82% that is affected by swithching loss and inducter conduction loss but we can increase efficieny by means of reduse the switching loss

so here i'm replace mosfet with new characteristic and now Rds = 5mohm

so now mosfet lossess and efficiency

Pm = ( (79/0.75)^2)*0.005*02.25 = 13 watt

pin = 13+ 554+124+5111 = 5802 wat

pout = 5111.3 watt

efficiency = 5111.3*100/5802 = 88%