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
6-2025
Primary Advisor
Taufik, College of Engineering, Electrical Engineering Department
Abstract/Summary
This senior project details the improvements made to Cal Poly’s Hybrid AC/DC House project. The previous state of the house experienced issues with proper reading of the current power being drawn from the connected AC sources, as well as with the system’s multiple-input single-output converter, where thermal overheating of specific FETs prevented the system from reaching its maximum output power. The updates made to the AC/DC house include improved code to prevent faulty readings and display failure and a cleaned-up power monitoring board that removes noisy signals and allows for the correct power implementation to be displayed. In addition, the MISO implements additional ground planing, as well as an adjustment to the board FETs by adding gate resistance to reduce noisy signals and selecting transistors with a lower drain-source resistance to reduce losses and heat generation. Results of the power management system include fully monitorable AC and DC power metrics displayable on a touchscreen, as well as breadboard circuitry that removes the common ground faults present in the original design. The MISO board shows proper operation with a single parallel supply up to 400W with 98% efficiency, as well as proper operation with dual supplies up to 300W with 99% efficiency. Additionally, the operation of these boards reduces the full-load operation temperature after ten minutes of continuous power delivery from that of the previous design.
URL: https://digitalcommons.calpoly.edu/eesp/677