wind power – alternative energy

4/19/2012 1The Ohio State University - Engineering 692

Wind Power –Alternative Energy

Choluteca, HondurasGroup Members: Brandon King, Killian Llewellyn,

Nirupa Manohar, Lisa Reisenauer, Elizabeth Schweizer, Nial Tilson, Stephanie Tsavaris, Tom Zajdel

4/19/2012


Table of Contents• Overview• Pre-Trip Project Components

– Block Diagram with Components– Mechanical Properties– Power Requirements

• Implementation• Post-Trip Summary• Feasibility Analysis• Sustainability


Overview• Create energy source for Storage Unit

– No current power in the container– Electricity is expensive


Overview• Designed to provide energy for 4 hours daily

– A battery charger– Couple of work lights

• Create a prototype/training tool for the Vocational School to learn about wind generation.


Pre-Trip Project Components


System Block Diagram


Mechanical Properties


Power RequirementsDevice Qty Power

T8 bulb 2 80 W

Charger 1 85 W

Box fan 1 100 W

Subtotal 265 W

Total (x1.5 SF) 397.5 W

• 400 W inverter• Battery bank

– Two 12V 105Ah – This is a worst-case

calculation, assuming everything is on for four hours!

397.5𝑊

10𝑊𝐴

×4 h× 1.80=198.75 h𝐴


Electrical Limitations• Start with the generator

– 95 V @ 4000 RPM– 14 V @ 600 RPM

• Need at least 14V to charge battery, motor puts out about 2A maximum at this voltage

• Can charge battery 48 Ah in a 24-hour period• Would take 99 hours to fully charge, or 4.14

days!


Electrical Limitations• Generator is the limiting reagent of this system• Low output current at the required voltage leads

to slow charging• Could revise battery bank to 105 Ah to save

money• Can scale up project once a better generator is

found


Implementations


First Work Day• Preparation for construction


Building the Structure• Built and modified the needed components


Assembling the Wind Turbine


Wiring


• Electronics to do:– Charge controller– Expand diversion

load– New motor

connections– Install fuse


Electrical Complications• Original motor weak

(replace w/ 2.5 hp motor)

• Wrong charge controller!

• Wiring can be completed when new motor/Q-controller are sent down

That’s not a charge controller, Dave.


Design Complications• At high wind speeds, the system was producing

6V but 12V was needed


Design Modifications• Add gearing to the system


Trip Summary and Next Steps• The wind turbine is assembled but unable to rotate

• The electrical wire are in place and ready for the additional components to be integrated

• A new generator and turbine system will be built at The Ohio State University and sent down

• Instructions regarding the installation will be provided


New Generator and Turbine System Design


Post Trip Summary


Final Costs

• Prior to leaving, $200.54 were spent on supplies:– Blade Materials (PVC)– Pulley System and Mounting Parts

• While in country, $305.84 was spent on supplies:– Grounding Rods– Wires and a battery

• The total spent was $506.38.


Final Schedule

Initial Assessment and Other Projects

Finish Other Projects

Date Planned Actual

17-Mar Arrive in Choluteca Arrive in Choluteca18-Mar Beach day Beach day19-Mar Assemble blades and rear hinge

and stand/tower and mount3/20: Split

Finish assemble and Begin wiring Mounting Components Built and Installed

3/21: Split

Finish wiring and begin testing Initial Electrical Wiring andMounting Modifications

22-Mar Finished Electrical Wiring andBegan Gearing System

23-Mar Troubleshooting/ Depart for Tegucigalpa

Troubleshooting/ Depart for Tegucigalpa

24-Mar Return home Return home


Team Roles

Team Member Role

Brandon King Historian

Killian Llewellyn CFO and Electrical Support

Nirupa Manohar Schedule Coordinator

Lisa Reisenauer (Team Lead – Aquaponics)

Elizabeth Schweizer Project Manager

Nial Tilson Field and Mechanical Lead

Stephanie Tsavaris (Team Lead – Bike)

Tom Zajdel Electrical Lead


Feasibility Analysis and Sustainable Solutions


Feasibility Analysis• Educate Vocational School staff on technical

components of the systems in case of system failure/malfunction.– System Loads– Operation of Turbine– Procedure for Maintenance


Feasibility Analysis (cont.)• Safety Concerns:

– Closed off, protected electrical components.• Electrical Components will be contained in the storage

container and protected from users and environment– Fast spinning parts are to be placed out of reach

• Turbine blades will be 6 feet above the roof of the shelter, leaving ample space between turbine and ground level

– Total instability (height / how secured)• The turbine support tower will be anchored to the storage

container, and firmly secured to the top of the shelter frame, allowing two anchoring points, increasing the system stability


Sustainable Solutions• Power from wind is converted to usable

electricity.– Based on data collected March 2011 by Miriam

Simon, winds in the area should be sufficient to supply power need for our given wind generator.

• Materials should withstand environment and elements.

• Capable of storing power even if no power-generating source is available.


Involvement of Locals• Fabrication of mechanical components

– Obtain materials & tools– Specialty skills

• i.e. welding

• Installation– Running & connecting wires– Getting the turbine onto the shelter & securely

attaching it


Documentation• User Instructions

– Explanation of what each part is– Include schematics for electric and mechanical

components– Translate into Spanish


Project Influences• Miriam Simon’s thesis defense presentation• YouTube• Video conferencing with Larry Overholt• Howard Greene’s presentation on the pre-design

process– Defining the Problem→Brainstorming→SOW→Deliverables→Final Product

• Roger Dzwonczyk’s presentation on management and documentation

• Weekly group discussions


Questions?

wind power – alternative energy

Documents