Wind Turbine Project Plan (Dec08-04)Lindsay Short

Nick RiesLuke Donney

Dario VazquezChris Loots

Advisor: Dr. AjjarapuClient: Dr. Aliprantis

IntroductionPurpose: 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

Proposed SolutionVariable 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

Concept Sketch

System Block Diagram

Converter

Load

Turbine

Generator

Batteries

1. Energy collection via wind turbine

2. Mechanical power converted into DC electrical power

3. Energy storage

4. Conversion from DC, variable frequency to AC, 3-phase, 60Hz

5. Power feeding into load

6. Backup power supply

Coover Hall Power

1

2

5 6

3

4

Wind Turbine System Block Diagram

System DescriptionProcess 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.

Operating EnvironmentThe 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

Functional RequirementsThe turbine shall be a variable speed turbineThe turbine shall be an upwind turbine The turbine shall generate a DC currentThe turbine shall supply a power output of 500-

2000 WThe 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 gridThe turbine shall turn off in high winds that will

cause damage

Non Functional RequirementsHeight 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

DeliverablesWind Turbine and Mounting TowerPower and Control SystemsInstruction ManualFree Power!

Users and UsesIowa State Electrical and Computer

Engineering faculty and studentsResearch purposes and classesThe 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

Work BreakdownID Task Nam e

1 Project Reporting

2 Project Plan

3 Website

4 Draft Design

5 Draft Report

6 Bound Report

7 Project Pos ter

8

9 Problem Definition

10 Safety Considerations

11 Determ ine Turbine Type

12 Determ ine Load for Turbine

13

14 Project Design

15 Des ign Turbine Size

16 Define Sys tem Layout

17 Des ign Power Electronics

18 Des ign Control Electronics

19 Obtain Funding/Donations

20 Determ ine Turbine Mounting

21 Small-scale Model

22 Sim ulation

2/3 2/10 2/17 2/24 3/2 3/9 3/16 3/23 3/30 4/6 4/13 4/20 4/27 5/4 7/13January 21 February 11 March 1 March 21 April 11 May 1

Assumptions and LimitationsAssumptions:

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

Estimated Resources – CostEstimated Project Cost

Materials Cost

Wind Turbine $2,700

Tower for Wind Turbine $100

Battery $150

Power Converter $50

Control Electronics $20

Relays $10

Materials Subtotal $3,030

Person Labor (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

Estimated Resources – EffortEstimated Personnel Effort

Team Member Chris Loots Dario Vazquez Lindsay Short Luke Donney Nick Ries

Task1 - Project Reporting 50 50 50 50 50

Task2 - Problem Definition 100 100 100 100 100

Task3 - Project Design 150 150 150 150 150

Total Hours 300 300 300 300 300

RisksRisks:

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 task2. 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.