1. TEAM 28 (S.P.O.C.) Solar Power Optimized Cart

2. TEAM MEMBERS  Cameron Boozarjomehri  Computer Engineer  Team Leader  Jacob Bitterman  Electrical Engineer  Hardware Lead (Leader of away team)  William Ellett  Computer Engineer  Software Lead (redshirt 1)  Zaza Soriano  Team Mentor  Consultant (Supreme Overlord)  Dr. Richie  Being a Swell Guy  Sponsor  Duke Energy

3. MOTIVATION  Desire to work with Solar Technology  Interested in transportation project  Environmental conservation interests  Have an excuse to drive a golf cart to and from campus

4. CURRENT METHODOLOGY (TESLA SUPERCHARGER) ►Electric car using charge stations ►Cost: $62,400 (1,170 for Vehicle Dock) ►Super Charge station incorporate PV cells (Separate Assembly)

5. CURRENT METHODOLOGY (UCF ZENN) ►Zero Emission No Noise ►Electric Car modified with a PV array ►Cost: $15,995 (just car, no integrated PV hookup) ►Range of 35 Miles

6. OBJECTIVES  Electric vehicle  Powered solely by photovoltaic cells  Able to charge while driving  Vehicle drive modes to control performance  Performance mode  Balanced mode  Eco mode  Clearly display vehicle information to user  Use a simple User Interface to allow users to manipulate the vehicle

7. SPECIFICATIONS  Cart can reach top speeds in excess of 10 miles per hour  Considered normal for this model cart  Cart will have parallel charging circuits  Vehicle load capacity of 700lbs (including passengers and all components)  Charge from no energy in 6 hours during optimal sunlight exposure [Stretch Goal]

8. SPECIFICATION CONT.  Rear panel adjustable with 80º of freedom to optimize solar energy collection  Optimization system that suggests best panel angle to within 5º  User Interface  Displays current drive mode (Performance, Balanced, Eco Boost)  Display energy absorption rate in watts to nearest watt  Battery charge percentage accurate to nearest whole percent  Stretch Goals:  Display current maximum range in miles +/- 1 mile  Display speed in mph to nearest 1/10 th of a mile

9. GOALS/SPECIFICATIONS OF DRIVE MODE  All drive modes have emergency shutoff to protect cart components Drive ModePerformanceBalancedEco Boost TuningFavors SpeedBehaves NormallyFavors Range RequirementsCart is able to surpass factory restricted top speed Vehicle operates within standard factory settings Cart is able to surpass factory specified top range Performance Targets (Stretch Goals) Cart can go in excess of 14 mph Cart can travel more than 25 miles between charges Cart travels as long as possible past 25 miles between charges Intended Design settings Vehicle uses both battery and solar panel output to maximize speed and acceleration Cart combines panels and a single battery bank to achieve normal drive speeds Single panel and battery bank work in series to drive cart, 2 nd panel charges secondary batteries

10. OVERALL BLOCK DIAGRAM Solar Panels Micro- Controller MPPT/ Converter Motor Onboard Display Batteries

11. COMPONENT POSITIONING (SIDE) 7’ 9.5” 5’ 7.5” Solar Panels 5’ 4” Display Microcontroller Housing Battery/ Buck Converter Housing *Banana for Scale

12. COMPONENT POSITIONING (BACK) Microcontroller Housing 5’ 7.5” 3’ 11” 3’ 3” 5’ 4”

13. VEHICLE (GOLF CART) SpecsE-Z-GO Freedom-TXT 36 Volt Electric Golf Cart (2005) Energy SourceTrojan 105h 6Volt Deep Cycle wet battery (x6) DC Motor36-volt 4-hp@4400 rpm (can handle up to 48 volts) Projected Top Speed20mph Realistic top speed10mph Load Capacity800 pounds Price$1,600.00 after tax

14. PHOTOVOLTAIC OPTIMIZATION Solar Panels Micro- Controller MPPT/ Converter Motor Onboard Display Batteries

15. SOLAR (PHOTOVOLTAIC) PANEL SpecsGrape Solar GS-S-390-TS 390-Watt Monocrystalline Solar Panel Grape Solar GS-S-250-Fab5 250-Watt Monocrystalline Solar Panel Rated Power390W250 Watts Watts341 (PTC)222.1 (PTC) Max Voltage49.4V31.7V Cell Efficiency15.2%15.4% Dimensions L x W x T77.2” x 51.5” x 1.57”64.6” x 39” x 1.57” Price$969.00$374.99

16. MICROCONTROLLER SpecsMSP430G2xx 16 bit Microcontroller ATmega2560 Operating Voltage1.8-3.6V1.8-5.5V Flash Memory56Kbytes256Kbytes I/O Pins14/2086 Operational Range-40 to 85C IDEMSP-EXP430G2Arduino IDE Price$12.50$0.00

17. PRINTED CIRCUIT BOARD SCHEMATIC

18. PRINTED CIRCUIT BOARD

19. MPPT DESIGN DC-DC converter

20. BUCK CONVERTER OVERVIEW On-state Off-state

21. BUCK CONVERTER

22. COMPONENT POSITIONING (BATTERIES) Thermal Sensors 18 Volts per circuit

23. BATTERY SpecsSmart Battery 12V 40AH Lithium Ion Battery Kit Trojan Line Flooded Deep cycle 6V battery (Model T-105) Voltage12.8V6V Max Capacity80A-H225A-H Weight46.0lb62lb Dimensions L x H x W 7.75” x 6.87” x 6.50”10.375” x 7.125” x 10.875” Temperature Range-15 to 70 C-20 to 45 C Price$672.90$149.00

24. ADDITIONAL SENSORS DS12B20 – Temperature SensorSEN-09088 Mini Photocell 3.0 to 5.5 V100mW Power Dissipation 8 Bit Digital I/O PercisionAnalog I/O pin read ±1 C at -55 to 125C (In battery operational range) ±0.1 lux at -30 to 70C (optimal for panel adjusting) Dimensions 5 x 4 x 3mm 13mm lead length Dimensions 2 x 4 x 5mm 31mm lead length $4.25 (x4)$1.50 (x2) 18mm 33mm

25. DRIVE CIRCUIT Solar Panels Micro- Controller MPPT/ Converter Motor Onboard Display Batteries

26. DRIVE MODES Standard Mode Eco Boost Mode Performance Mode

27. RELAY DIAGRAM Converter SPST SPDT Converter SPST SPDT

28. RELAY DRIVER SCHEMATIC

29. RELAYS AND DIODE AGT 30/40 Amp SPDT RelaysIN250B High Voltage Diode Rated up to 40 AmpsMax 100V 12V Mechanical switchMax 50A Can be repurposed as SPST RelayTurn on Voltage of 1 Volt Dimensions 52 x 26 x 28mm 16 Gauge Harness Wires Dimensions 37 x 20 x 20mm 13.95(x8)$3.00 (x8) 33mm

30. USER INTERFACE Solar Panels Micro- Controller MPPT Governor /Motor Onboard Display Batteries

31. COMPONENT POSITIONING (DASH BOARD) B0B1

32. USER DISPLAY SpecsAdafruit Blue Character OLED 16x2 Adafruit HDMI 4 Pi – 10.1” Display 1280x800 IPS – VGA/NTSC/PAL Resolution16 characters x 2 rows1280x800 pixels LightingLED Pixel-basedWhite LED backlight Required Voltage3/5V 5-12VDC Easily added to PCB?no Dimensions L x W x D 80mm x 36mm x 10mm Approx. 230mm x 150mm x 5mm Contrast ratio2000:1800:1 Price$27.95$144.95

33. B1 USER DISPLAY Program start Battery Power Input and Charge Battery Temperatures F/C Current Drive Mode B0 Panel Output & Efficiency B0 “Eco Mode Max Range” “Balance Mode Avg Rng & Spd” “Performance Mode Max Speed” B1 Release B1 Hold B1 Hold B0 & B1: Cycle Cart Info

34. PANEL ADJUSTMENT CONTROL

35. PROJECT BUDGET ComponentBudgeted CostActual CostDifference Cart $1,999.00 $1,600.00+$399.00 Battery $0.00 PV Cells $433.95 2x $374.99-$316.03 Screen $149.95 $27.95+$122.00 PCB $91.89 $185.30-$93.41 Sensors, etc. $0.00$369.90-$369.90 Total: $2,674.79$2,933.13-$258.37

36. STRETCH GOAL  Bluetooth: Redundant Data Distribution from display to phone  PV Optimization using GPS Suggest parking position to improve vehicle charge time Displayed Via OLED  Motor Control Limiting Acceleration to maximize range Controlled by the Microcontroller  Data Displayed Current Speed Maximum Range in each drive mode

37. TaskJacob BittermanCameron Boozarjomehri William Ellett Maximum Power Point Tracking W Power Conversion (Buck Converter) W Power Switching and Distribution C Drive Mode Implementation C Microcontroller and Sensor Connections CW Panel Mounting & Positioning System JC User Interface CW Printed Circuit Board (PCB) CW

38. QUESTIONS?