1. DEVELOPMENT OF LABORATORY MODULE FOR SMALL WIND TURBINE CONTROL SYSTEM (Phase V) Advisor/Client: Dr. Venkataramana Ajjarapu Group MembersPosition on Team Adam LiterskiGroup Leader Josephine NamatovuPlanning Lead Eurydice UlyssesCommunication Liaison Logesh SampathkumarWeb Master Achila JayasuriyaHardware Lead Liaochao SongSoftware Member Senior Design Group: MAY1329 Slide 1 of 20

2. Problem Statement Develop a laboratory module for a small wind turbine electrical system Serve as an educational tool for students Intake wind speed measurements and simulate the power output to the system Continue and build upon Phase IV’s system according to the required specifications denoted by client Wind Turbine - MAY1329 Slide 2 of 20 Figure 1: System Setup

3. Market Survey Iowa – second largest producer of wind energy in the nation Iowa State taking steps to be environmentally friendly and self- sustainable Electrical needs steadily increasing due to population growth in the US Growing environmental concerns and depletion of fossil fuels Increased production of renewable resources Wind Turbine - MAY1329 Slide 3 of 20 Figure 2 : Survey on Renewable Energy

4. Functional Requirements Motor 1.5 Horsepower (1.1kW) Motor has f max of 60 Hz & V max of 230V Full load of the motor is 4.08 A & 3570 rpm Inverter input DC voltage is between 21 and 34 volts Turbine circuitry will supply load variation up to 400 W Wind Turbine - MAY1329 Slide 4 of 20 Figure 3 : Induction Motor

5. Non-Functional Requirements Project technical manuals and schematics documents Motor will be remounted onto a stable operation platform Wiring and connections done in an understandable and professional manner Wind Turbine - MAY1329 Slide 5 of 20 Figure 4 : Circuit Setup

6. Concept Sketch Wind Turbine - MAY1329 Slide 6 of 20 Figure 5 : Concept Sketch

7. Functional Decomposition Wind Turbine - MAY1329 Slide 7 of 20 Figure 6: Functional Decomposition Case 1: Generation > Demand Case 2: Generation < Demand Case 3: Generation = Demand

8. Potential Risks/Mitigation Following regulations as stated in the Lab Safety Manual Cautious handling of all lab equipment Minimum of two people required to be present in the lab Avoiding disorganized wiring Keeping all work areas clean and uncluttered Wind Turbine - MAY1329 Slide 8 of 20

9. Technology Platform Multisim – design, simulate the total system LabVIEW – Measure RPM speed from NI USB-6009 Wind Turbine - MAY1329 Slide 9 of 20 Figure 7: Old System

10. Detailed Design Wind Turbine - MAY1329 Slide 10 of 20 Figure 8: Complete System Design

11. Test Plan Wind Turbine - MAY1329 Slide 11 of 20

12. Finished up design models (rectifier, boost, PWM) Software team joining hardware group Finishing up testing individual components Implement design changes Current Project Status Wind Turbine - MAY1329 Slide 12 of 20

13. Responsibility/Contributions (Hardware) Hardware Team: Achila, Logeshwar, Adam Debugged Phase IV circuitry  Rectifier issues Tested motor to measure voltage to correlate with RPM Power source replacement Wind Turbine - MAY1329 Slide 13 of 20

14. Responsibility/Contributions (Software) Software Team: Liaochao, Eurydice, Josephine Verified/redesigned old design limitations  Rectifier, PWM, and Boost converter Familiarized ourselves with Multisim and MATLAB Plecs platforms Innovative research on control switching voltage device Wind Turbine - MAY1329 Slide 14 of 20

15. Project Milestones Software: Simulated and obtained all desired output for: Rectifier Boost converter Pulse Width Modulator Hardware: Debugged individual electronic components Rebuilt the old rectifier Tested the motor for operating conditions Re-wired the whole system Wind Turbine - MAY1329 Slide 15 of 20

16. Project Schedule Wind Turbine - MAY1329 Slide 16 of 20 Figure 6: Fall 2012 Timeline

17. Constraints/Considerations Controlled environment inside power lab in Coover 1102 $500 budget leaves little room for equipment malfunctions Discrepancies in schematics and wiring diagrams from previous group's work The system needs to be easy to use for the average undergraduate student Wind Turbine - MAY1329 Slide 17 of 20

18. Resource/Cost Estimate FundingAmount Client – Dr. Venkataramana Ajjarapu$500 Projected Cost EstimatesAmount New Motor~$150 Electronic Components~$100 Total~$250 Wind Turbine - MAY1329 Slide 18 of 20

19. Finish testing individual components Update Wiring Schematics Project Documentation Manual Build LabVIEW user interface to control the system Real-time wind data gathering Variable load control Troubleshoot battery power dissipation at full capacity Plan Looking Forward Wind Turbine - MAY1329 Slide 19 of 20

20. Questions? Wind Turbine - MAY1329 Slide 20 of 20