P13271: AMSAT
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Project Summary Project Information

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Overview

AMSAT Fox-2 Maximum Power Point Tracker PCB developed during MSDI and MSDII

AMSAT Fox-2 Maximum Power Point Tracker PCB developed during MSDI and MSDII

The Radio Amateur Satellite Corporation (AMSAT) has been working to produce a new family of satellites to expand upon more than 40 years of flight heritage. The Fox family of satellites will be based on the CubeSat standard providing AMSAT with its next generation of spacecraft. The Fox-1 satellite is a small 1U CubeSat to be launched in 2013,the Fox-2 satellite will be a larger 3U payload that will require upgraded power production capabilities. Fox-2 will use seven SpectroLab UTJ 28.3% efficient solar cells to produce power while in a 600 to 800 km orbit around Earth.

P13271,the team working on this project, has been tasked with providing AMSAT with an engineering prototype of a 7 Watt Maximum Power Point Tracker (MPPT). This project will be further developed into a flight ready design to be launched into orbit around 2015. The scope of this project includes providing a NASA derated and radiation tolerant engineering prototype MPPT. Two MPPT circuits were implemented with a temperature based constant voltage algorithm to prove size constraints and power sharing capabilities. The results of this project have produced a working analog MPPT and microprocessor firmware able to provide telemetry data to the Fox-2 Internal Housekeeping Unit (IHU) based on the Fox-1 standards.


Results

MPPT output power versus solar panel temperature accuracy

MPPT output power versus solar panel temperature accuracy

The MPPT circuit developed for AMSAT successfully tracks the maximum power point based on temperature of the solar panels. The analog MPPT algorithm implemented suggests an improved robustness over microcontroller-based MPPT algorithms investigated. The power handling capability of the MPPT can easily be increased by sourcing higher power components, providing AMSAT with a very useful and scalable design. A great deal of effort was put into making the PCB easy to use and accessible for testing with numerous test points. The delivered hardware has been accompanied by a large amount of analysis and documentation compiled by the P13271 team members.

Final Test Results (PDF)

Videos

Time-lapse PCB Bring-Up

MPPT Operation Walk-Through

MPPT Operation Super-Capacitors

P13271 AMSAT MPPT MSDII Final Presentation

Project Name
AMSAT-MPPT
Project Number
P13271
Project Family
Vehicle Systems and Technologies
Start Term
2012-2
End Term
2012-3
Faculty Guide
Leo Farnand, Vince Burolla
Primary Customer
Tony Monteiro
Sponsor (financial support)
AMSAT

Team Members

AMSAT MPPT P13271 Team. Left to Right: Ian MacKenzie, Brent Salmi, Bryce Salmi, Dan Corriero

AMSAT MPPT P13271 Team. Left to Right: Ian MacKenzie, Brent Salmi, Bryce Salmi, Dan Corriero

Member Role Contact
Bryce Salmi Project Manager bts2637@rit.edu
Brent Salmi Chief Engineer bjs4703@rit.edu
Dan Corriero Team Facilitator dpc3240@rit.edu
Ian MacKenzie Documentation Manager icm4882@rit.edu

Table of Contents

MSD I MSD II Select Images

Photo Gallery

Planning & Execution

Systems Design

System Design Review

Detailed Design

Project Review

Photo Gallery

Planning & Execution

Build, Test, Document

Project Review

Final Presentation (PDF)

Technical Paper (PDF)

Poster Print Quality (PDF)

Poster High Quality (PNG)

Imagine RIT 2013

MPPT Testing

Final MPPT PCB (S/N:1)

(S/N:1 Dayton Hamvention 2013)

MPPT Shipped

Acknowledgements