Project 3

1- A DC/DC converter should be designed for an electric vehicle. The DC/DC converter should convert the voltage from the battery pack at 48 V to supply the 12 V loads (Radio, horn, accessories, etc..). The load needs an output current of 5 A. (Hint: the load can be represented as a resistance).

a) Draw a schematic of the DC/DC converter that you suggest for this application.
b) Specify the duty ratio of the converter.
c) Suggest a switching frequency of the converter.
d) Design the switching inductor such that the current is continuous and the inductor current ripple is less than 30% of the average inductor current.
e) Design the output capacitor such that the output voltage ripple is less than 5%.
f) What are the peak voltage and current values of your switches (Mosfet and Diode)?Comment from your simulation result

Solution:

given,

Vin = 48V

Vout = 12V

Output Current = 10A

inductor current ripple is less than 30% of the average inductor current

output voltage ripple of the capacitor is less than 5%.

Step of Designing:

Step 1: Draw a circuit Schematic diagram of the buck converter

Step 2: Draw the Converter Circuit in ON & OFF mode.

Step3: Calculation

1- A DC/DC converter should be designed for an electric vehicle. The DC/DC converter should convert the voltage from the battery pack at 48 V to supply the 12 V loads (Radio, horn, accessories, etc..). The load needs an output current of 5 A. (Hint: the load can be represented as a resistance).

a) Draw a schematic of the DC/DC converter that you suggest for this application.
b) Specify the duty ratio of the converter.
c) Suggest a switching frequency of the converter.
d) Design the switching inductor such that the current is continuous and the inductor current ripple is less than 30% of the average inductor current.
e) Design the output capacitor such that the output voltage ripple is less than 5%.
f) What are the peak voltage and current values of your switches (Mosfet and Diode)?Comment from your simulation result

Solution:

given,

Vin = 48V

Vout = 12V

Output Current = 5A

inductor current ripple is less than 30% of the average inductor current

output voltage ripple of the capacitor is less than 5%.

Step of Designing:

Step 1: Draw a circuit Schematic diagram of the buck converter

Step 2: Draw the Converter Circuit in ON & OFF mode.

Step3: Calculation

1- A DC/DC converter should be designed for an electric vehicle. The DC/DC converter should convert the voltage from the battery pack at 48 V to supply the 12 V loads (Radio, horn, accessories, etc..). The load needs an output current of 5 A. (Hint: the load can be represented as a resistance).

a) Draw a schematic of the DC/DC converter that you suggest for this application.
b) Specify the duty ratio of the converter.
c) Suggest a switching frequency of the converter.
d) Design the switching inductor such that the current is continuous and the inductor current ripple is less than 30% of the average inductor current.
e) Design the output capacitor such that the output voltage ripple is less than 5%.
f) What are the peak voltage and current values of your switches (Mosfet and Diode)?Comment from your simulation result

Solution:

given,

Vin = 48V

Vout = 12V

Output Current = 10 A

inductor current ripple is less than 30% of the average inductor current

output voltage ripple of the capacitor is less than 5%.

Step of Designing:

Step 1: Draw a circuit Schematic diagram of the buck converter

Step 2: Draw the Converter Circuit in ON & OFF mode.

Step3: Calculation