Wind Turbine Energy Conversion
System Design and Integration
Advisor: Venkataramana Ajjarapu
2009 Project Team
Elsammani Ahmed Hassan Burawi
Brandon Janssen
Luke Lehman
Kenneth Thelen
Problem Statement
This is a continuation project. The ongoing project
involves the design of a wind turbine energy conversion
system that can be integrated to electrical power grid in the
Coover hall power lab. It also includes a display system to
indicate the output power from the wind turbine. The
generator is rated around 400W. The wind turbine will be
installed on the roof of the Coover Hall. All the protection and
control aspects of the conversion system become part of the
design. The extension of the project includes the design
requirements to supply stand alone load in conjunction with
the grid supply. At low wind speeds the system is supplemented
by the grid source.
Conceptual Sketch
Intended Users and Uses
Users
• ISU students
Uses
• Supplement power to
Coover Grid
• ISU faculty and staff
• Power standalone load
• Provide an educational and
demonstration component
Operating Environment
• Coover Hall RoofTurbine (Permanent)
• Coover Hall Lab-Inverter
and Controls
(Permanent)
• Coover Hall Lab-Turbine
System (Testing)
Requirements
• Integrate with current
team
• Meet grid standards
• Budget
• Supply Power Grid
• Safety
• Supply stand alone load
• Accessibility
Requirement Changes
• Provide test-bed for additional sources
• Display power levels from grid/turbine
Constraints
•
•
•
•
Meeting budget constraints of $250.00
Meeting grid standards
Meeting safety standards
Accessibility: shall be able to use testing
equipments to measure outputs of wind
turbine
• Location of different system components
Standards
IEEE 1547
• Standard for
Interconnecting Distributed
Resources with Electric
Power Systems
NERC Docket PL04-15-000
• Interconnection for Wind
Energy and Other
Technologies
Assumptions
• All goals of the group from last semester
working on the project are accomplished
• Supply 200W load
• Grid frequency of 60 Hz
• Grid configuration is accessible to connect
with load
• Turbine chosen to meet building codes,
federal electrical regulations, fixed speed, etc.
Expected End Product and
Deliverables
• Wind turbine power for standalone load
• Wind turbine power for grid operation
• Series of tests for Wind Turbine System
• Matlab simulation of wind turbine system
(optional)
• User Interface for Display
Direction Changes
•
•
•
•
Single phase vs. 3-phase
Battery-less system
Larger turbine
External control for
educational purposes
• Load control
Wind Turbine
Southwest Windpower Air X 400
Rotor Diameter
46 in.
Weight
13 lb
Start-Up Wind Speed
8 mph
Voltage
24 VDC
Rated Power
400 watts at 28 mph
Turbine controller
Micro-processor
based smart internal
regulator
Body
Cast aluminum
Blades
3-Carbon fiber
composite
Overspeed Protection
Electronic torque
control
Kilowatt Hours/Month
mph
38 kWh/mo at 12
Survival Wind Speed
110 mph
Turbine Output
Non-ideal Features
•
•
•
•
Battery Bank Requirement
Regulation Mode
Internal Controls
Low Power Output
Alternative Turbines
Southwest Windpower Whisper 200
Rated Power Output:
1 kW
Raum Energy
1.5 kW
Inverter
Outback GTFX2524
Nominal DC Input
24 VDC
Continuous Power Rating
2500 VA
AC Voltage/Frequency
120 VAC 60 Hz
Continuous AC RMS Output
20.8 Amps AC
Idle Power
6-20 Watts
Typical Efficiency
92%
Total Harmonic Distortion
2-5%
Output Voltage Regulation
± 2%
Maximum Output Voltage
50 amps AC RMS
AC Overload Capability
Surge
5 seconds
30 minutes
6000 VA
4800 VA
3200 VA
AC Input Current Max
60 amps AC
AC Input Voltage/Frequency
80-150 VAC 58-62 Hz
DC Input Range
21-34 VDC
Weight
56 lbs
Interface Sketch
System Schematic
Testing
• Full range of turbine
• Inverter operation with
load
• Fabricating test
equipment
• Ensuring proper gauge
wiring is used
• Safe connections and
switching
Resource Costs
Item
Cost
Air X 400 W Wind Turbine
$750
Outback GTFX2524 Inverter
$1800
Batteries
$750
Microcontroller
$25
Controller wiring and misc
$20
Turbine Mounting Materials
$250
Thick Gauge Wiring
$175
Sensors
$100
Insulated Ring Tung Terminations
Conduit
Labor
Estimated Total
$10
$100
632 Hours
$3980
Projected Hourly Work
Brandon
Janssen
17
12
31
Luke
Lehman
15
14
27
Kenny
Thelen
10
15
20
Hassan
Burawi
15
10
26
Elsammani
Ahmed
10
10
25
Research
22
15
12
20
21
Standalone
Testing
Documentation
Web Design
Totals
12
20
20
0
132
16
30
18
0
135
18
13
14
15
117
17
25
16
0
129
14
20
19
0
119
Project Reporting
Problem Definition
Project Design
Updated Schedule
Week
24-Aug 31-Aug
Project Reporting
Weekly Reports ***
Project Plan Report
Final Design Report
Project Defination ***
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7-Sep 14-Sep 21-Sep 28-Sep
5-Oct 12-Oct 19-Oct 26-Oct
2-Nov
9-Nov 16-Nov 23-Nov 30-Nov
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Project Design
Research
Current Equipment ***
New Equipment
Wiring
Testing
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Shaded areas depict original estimates while the *** depics actual time allocation
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Questions