1. Project Team: Project Lead: Jared Mukina (Electrical Engineering) Brian Nguyen (Computer Engineering) Nou Lee (Computer Engineering) James Lee (Electrical Engineering Technology) Rona Vo (Electrical Engineering) Kurt Fischer (Electrical Engineering)

2. 1. Problem Statement 2. Load 3. Design Overall system block diagram Detailed circuit schematics Psuedocode 4. Design Requirements Performance Verifications 5. Feasibility Manufacturability With in budget/resources Meets requirements/ safety 6. Risks FMEA

3.  Create a functioning system that incorporates a photovoltaic (PV) array, in addition to a battery bank, to supply one kW to a load for a time period of 5 hours.

4.  EPIC cart battery charging station. *NOTE: Load will dictate adjustments in the system design.

5. Epic charging dock is being under review of this location Proposed Area for Shed Proposed Area for Electric carts

6. The entire roof will consist of all PV arrays and it has to be interchangeable and watertight

8. 1 2

11. Psuedocode if (power of PV >= (1.3*power of Load)) { if 13.8< battery1 < 14.2 or 13.8<battery2 <14.2 { relay1=OFF relay2=OFF relay3=ON printf("relay 1= OFF,relay 2= OFF,relay 3 = ON" ); } else if((battery1 < 13.8) or (battery2 < 13.8)) { relay1=ON; relay2=OFF; relay3=ON; printf("relay 1= ON relay 2= OFF relay 3 = ON" ); } if(power of PV<(1.3*power of Load)) { relay1=ON; relay2=ON; relay3=OFF; printf("relay 1= ON, relay 2= ON, relay 3 = OFF" ); if(Power of PV <1.3*(P load)) { relay1=ON; relay2=OFF; relay3=OFF; printf("relay 1= ON, relay 2= OFF, relay 3 = OFF" ); }

13.  The P.V. physical testing can not be completed properly until the P.V. system is set up outside for real time data testing.

15. AfterBefore

16.  Batteries are alive.  Batteries need to be charged from PV subsystem to charge quickly.

18.  1KW average per hour for 5 hours.  2KW average peak for 1 hour.  Max power point tracking to maintain steady DC voltage.  AC output must be 120 ± 5% volts at a frequency of 60 ± 1% Hertz  Protected device ◦ Relay ◦ Breaker ◦ Gauge sizing

19.  By eliminating the DC-DC converter, microcontroller and the Relays, the cost of our product is cheaper by ~$1000.  Cheaper

20.  Complexity of the design.  Outback Power Systems  Construction of housing.

21.  A budget of $2000 was provided. MaterialPrice Circuit Breaker$100 Wires$100 Housing$750 Simulation Software$200 Total$1150

23.  High current.  High voltage.  Structural Integrity.  Component overheating.

24.  The system has grid tie capability.  If the PV/battery sub system can not produce the necessary power, power can be pulled in to system from the grid.

25.  The final design should work as expected.  All the criteria should be met.  The load should consume enough energy.  Excess energy will be delivered to the grid.

26. 1. Farid Golnaraghi and Benjamin C. Kou. Wiley, 2010. Automatic Control Systems. 9 th ed. Intext Citation: (Golnaraghi and Kou, 2010 p.g-p.g.) 2. 2012 IEEE Vehicle Power and Propulsion Conference, Oct. 9-12, 2012, Seoul, Korea Intext Citation: (2012 IEEE Oct. 9-12) 3. Prusty, K. B., Ali S. M., and Sahoo K. D. “Modeling And Control of Grid-Connected Hybrid Photovoltaic/Battery Distributed Generation System.” International Journal of Engineering Research & Technology (IJERT). URL: http://www.ijert.org/browse/november-2012-edition 4. “map_pv_national_hi-res_200.jpg.” www.nrel.gov. 2013. Accessed 9/8/13. http://www.nrel.gov/gis/images/map_pv_national_hi-res_200.jpg 5. “map_csp_national_hi-res.jpg.” www.nrel.gov. 2013. Accessed 9/8/13. http://www.nrel.gov/gis/images/map_csp_national_hi-res.jpg 6. “gem-e4-golf20-cart.jpg” gliccc.wordpress.com. 2011. Accessed 9/26/13. http://gliccc.files.wordpress.com/2011/05/gem-e4-golf20-cart.jpg

27. Questions?