Project 2
- Design an interleaving DC/DC converter system for a data centre application with the following specifications:
- Input voltage: 45 – 60 v
• Output voltage: 3 V
• Output current: 100A
• Efficiency > 85% (extra credit for efficiency higher than 90% on a spice-based software simulation tool)
Simulate the system using a Spice-based software simulation tool such as LT-Spice, Pspice, PowerSim, TINA, etc...
Show your design in details (most probably, you will need to use an isolated system to achieve this low voltage conversion ratio, you might also need to use a multiphase system to increase the efficiency).
Show the input voltage, the output voltage, the input current, the output current, the system efficiency and any other simulation plots necessary to evaluate your design.
Solu
Switching Frequency = 20kHz
Duty ratio = 0.5
Let's assume that we will design for 50% Duty ratio:
N2/N1 = 0.2
These we choose the following:
N1 = 48
N2 = 10
we choose D = 0.5 then using equation we found that,
Now, we will choose an inductor for 10% current ripple:
R = Vout^2/p = 0.03
L = 0.133e-6
Now we are calculate the capacitor:
C = 2.08e-4
From all the above all calculations we are model now the interleaving DC/DC converter:
The recent development of battery powered applications is improving the need of efficient step up dc-dc converters. Now a days step up conversion is widely used in many applications like electrical vehicles, Photovoltaic systems, uninterruptible power supplies and fuel cell systems. By paralleling the converters the input current can be shared among inductors so that high reliability and efficiency in power electronic
MODEL
OUTPUT
