College - Author 1
College of Engineering
Department - Author 1
Electrical Engineering Department
Degree Name - Author 1
BS in Electrical Engineering
College - Author 2
College of Engineering
Department - Author 2
Electrical Engineering Department
Degree - Author 2
BS in Electrical Engineering
College - Author 3
College of Engineering
Department - Author 3
Electrical Engineering Department
Degree - Author 3
BS in Electrical Engineering
Date
6-2023
Primary Advisor
Taufik, College of Engineering, Electrical Engineering Department
Abstract/Summary
Today, there are nearly 400 cable networks spanning roughly 750,000 miles to connect our world together. With thousands of miles of cable already lying on the ocean floor, with thousands more to come, many have recognized a unique opportunity in using this cable infrastructure as an attachment point for sensors to help study and monitor the ocean. Placing sensors onto a submarine cable is not a simple task; the sensors will require power that they receive from a transmission cable, from a battery, or from the submarine cable itself. Unfortunately, the existing power feed configuration for submarine cables typically only accounts for cable repeaters and their specified current requirement. Therefore, a converter will be required to properly power the sensors. Because only the current is a known value (as the voltage will be variable depending on the position along the cable), a current source DC-DC converter must be used. This project entails the design and construction of a current source DC-DC converter that is intended to meet the following specifications for the sensors: step down an input current of 0.9 amps to 0.625 amps, maintain an output voltage of 24 volts, and an output power of 15 watts.
The goal of this project was to create a current-source DC-DC converter that stepped down a 0.9A input current to a 0.625A output current at 24V. The designed circuit successfully stepped down the input current to the proper output; however, further improvements will be needed to achieve the desired efficiency and output ripple specifications. Overall, the constructed circuit provides a proof of concept of the current source design that can be iterated upon for better results in the future.
URL: https://digitalcommons.calpoly.edu/eesp/586