1. Wind Turbine Project Plan (Dec08-04) ‏ Lindsay Short Nick Ries Luke Donney Dario Vazquez Chris Loots Advisor: Dr. Ajjarapu Client: Dr. Aliprantis

2. Introduction Purpose: Create a wind turbine that will be installed on the roof of Coover Hall on the Iowa State University campus The turbine will supply 500-2000 W of power to an isolated load in the building The load will also be connected to the power grid of the building so that the power is never cut off from the load should the turbine be turned off

3. Proposed Solution Variable speed, upwind, DC turbine facing west for maximum wind power Tower height-About 3.66- 4.57 m (12-15 ft) ‏ Optional: LCD screen located inside Coover Hall to display power output and other data Optional: Battery storage system Image from http://www.daviddarling.info/encyclopedia/B/AE_blades.html

4. Concept Sketch

5. System Block Diagram

6. System Description Process starts with energy collection from the wind via the turbine. Mechanical energy is converted to DC electrical energy with the generator, and the electrical energy is stored in batteries. A converter converts the DC energy into AC, 3-phase, 60 Hz to power the load. A backup system supplies the power that is needed by the load when the turbine generator cannot keep up with demand.

7. Operating Environment The turbine will function outdoors on top of the Coover hall roof. It will be subjected to every sort of weather including rain, extreme wind, snow, ice, and lightning

8. Functional Requirements The turbine shall be a variable speed turbine The turbine shall be an upwind turbine The turbine shall generate a DC current The turbine shall supply a power output of 500-2000 W The turbine shall have a radius of 2.18-2.92 m (7.15-9.58 ft.) ‏ The turbine shall have a tower height of 3.66-4.57 m (12-15 ft) ‏ The turbine shall be connected to an isolated load within the Coover Hall power grid The turbine shall turn off in high winds that will cause damage

9. Non Functional Requirements Height of Turbine – Turbine shall provide enough space below blades for the height of a person Building Codes – Turbine shall comply with all building codes such as weight limit, height limit Electrical Standards – All electrical areas shall comply with state and federal regulations

10. Deliverables Wind Turbine and Mounting Tower Power and Control Systems Instruction Manual Free Power!

11. Users and Uses Iowa State Electrical and Computer Engineering faculty and students Research purposes and classes The optional LCD display may also display extra information such as the wind speed, graphs of power output over time, or a live camera feed to display the wind turbine on an LCD panel

12. Work Breakdown

13. Assumptions and Limitations Assumptions: Funded by group budget and outside resources Isolated load power needed will be greater than power generated by wind turbine Similar wind turbine designs are currently being used Limitations: Turbine height and weight must be fit for Iowa State and City of Ames building regulations Turbine must not interfere with other objects on Coover hall roof Turbine can only output as much power as there is wind to supply it Coover Hall is currently under construction and might interfere with its placement Funding is limited

14. Estimated Resources – Cost Estimated Project Cost MaterialsCost Wind Turbine$2,700 Tower for Wind Turbine$100 Battery$150 Power Converter$50 Control Electronics$20 Relays$10 Materials Subtotal$3,030 PersonLabor (300 hours x $10)‏ Chris Loots$3,000.00 Lindsay Short$3,000.00 Luke Donney$3,000.00 Dario Vazquez$3,000.00 Labor Subtotal$12,000.00 Project Total$15,030

15. Estimated Resources – Effort Estimated Personnel Effort Team MemberChris LootsDario VazquezLindsay ShortLuke DonneyNick Ries Task1 - Project Reporting50 Task2 - Problem Definition100 Task3 - Project Design150 Total Hours300

16. Risks Risks: 1. Team member leaves project due to illness, co- op,… etc. 2. High winds could damage blades, throw turbine off roof 3. Lightning could strike turbine 4. Ice could freeze up the turbine 5. Birds could fly into turbine Risk Management: 1. More than one person assigned to each task 2. Brake system will stop rotor in high winds and will be bolted into roof to prevent it from blowing off 3. Install lightning rod near turbine and possibly ground blades to prevent damage to system 4. Heat tracing on moving parts to prevent ice buildup or keep turbine close to rooftop for easy maintenance. 5. Speakers to play sounds to keep crows away.