Solar-Powered Mobile Power Station (MPS) Team: Brad Jensen Will Klema Nate Schares Client: PowerFilm, Inc. Advisor: Dr. Ayman Fayed

Conceptual Diagram:

Use-Case Scenario: Military: Commercial: Individual Soldier Power Source Charge Laptop, GPS, etc. Commercial: Camping/Remote Destination Personal electronics charging

Functional Requirements Optimized for standard Solar Panel input – 4A @ 15V (60W) Amorphous Silicon Panel 100W minimum Lithium-Ion battery capacity 12V DC input (with AC-DC Adapter) Outputs: 5V USB output (USB 2.0 output) 12V DC output 120V AC output with switch Circuitry must be able to function in a temperature range of -25° C and 60°C Charging LED Indicators/state of charge indicators MPPT Charge controller with rating of up to 200W (12A @ 15V – PowerFilm Solar Quad) Charge Balancing Circuitry to keep Li-Ion Batteries balanced to prevent over or under charging Temperature sensor for batteries with alarm LED Achieve 80% or greater efficiency on all outputs

Non-Functional Requirements The MPS shall be designed mainly for military soldier use The MPS should also be designed with options for commercial use The unit should have a weight of less than 5 pounds Unit should be manufactured for a cost of under $500 per unit The unit should easily fit inside a military backpack

Tasks Breakdown Spring, 2010 FYI: Built with Microsoft Project

Tasks Breakdown Fall, 2010 FYI: Built with Microsoft Project

Cost Estimate

Potential Risks and Mitigation Overheating AC Inverter Climate Conditions Battery Charging Electrical Shock AC Voltage Overcharging Li-Ion Batteries Hydrogen gas build up Explosions Li-ion very sensitive to overcharge. Mitigation AC Circuit Breaker Monitor Battery Temp. Charge Balancer