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Wind Turbine Simulation (Phase IV)

Wind Turbine Simulation (Phase IV). SDMAY 12-24 Advisor: Dr. Venkataramana Ajjarapu. SDMAY 12-24. Group Members. Brian Alexander (Computer Engineering) Lon Bromolson (Electrical Engineering) Jarid Strike (Electrical Engineering) Chase Schaben (Electrical Engineering). SDMAY 12-24.

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Wind Turbine Simulation (Phase IV)

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  1. Wind Turbine Simulation(Phase IV) SDMAY 12-24 Advisor: Dr. VenkataramanaAjjarapu

  2. SDMAY 12-24 Group Members • Brian Alexander (Computer Engineering) • Lon Bromolson (Electrical Engineering) • Jarid Strike (Electrical Engineering) • Chase Schaben (Electrical Engineering)

  3. SDMAY 12-24 Project Description • Computer controlled motor is coupled with generator from wind turbine • Turbine power is used to drive inverter w/ AC load • Measurements are taken using DAQ USB-6008, and imported into LabVIEW

  4. SDMAY 12-24 Intended Use • Laboratory Environment. • Can be used for independent or for class purposes. • Can be operated by anyone with basic knowledge of circuitry.

  5. SDMAY 12-24 Major Changes • Last year’s system: • Batteries are voltage source • Wind turbine supplements power • Weak motor • New system: • Wind turbine provides voltage source • Batteries can be used as backup • PC provides user-friendly interface

  6. SDMAY 12-24 Last Year’s System

  7. SDMAY 12-24 • Functional Requirements • The turbine circuitry will generate a 24V DC output for any simulated wind speed • The turbine circuitry can supply 24V to any load variation up to 400 W • System is easy to use for average undergraduate student • Motor RPM can be set and maintained accurately

  8. SDMAY 12-24 • Non-Functional Requirements • The final project will include a user’s manual • The project will be documented through technical manual and in-depth schematics • Technology Requirements • LabVIEWinterface must accurately calculate variables and display them for the user to see • All sensor and control equipment connected with LabVIEW

  9. SDMAY 12-24 Turbine Circuitry • Internal circuitry needs 7 VDC to operate • Battery must supply voltage to system • By removing this circuitry and using the 3-phase generator directly, the turbine can provide voltage.

  10. SDMAY 12-24 New System Model

  11. SDMAY 12-24

  12. SDMAY 12-24 Feedback Systems • RPM Control • RPM is monitored • Slip is calculated • Voltage is adjusted to maintain low slip (1%) • Output Voltage Control • Output voltage is monitored • PWM duty cycle is adjusted to maintain output voltage (24V)

  13. SDMAY 12-24

  14. SDMAY 12-24 Motor Issue • Previous motor could not provide consistent high-speed output without overloading/overheating • We replaced the 370W induction motor with anIronhorse 1.5 HP induction motor • This required a new bracket to mount the motor Figure from Wikipedia “File:VFD System.png”

  15. SDMAY 12-24

  16. SDMAY 12-24

  17. SDMAY 12-24 New System Model

  18. SDMAY 12-24 Rectifier and Buck-Boost • Variable voltage/frequency 3-phase output from generator. • Rectifier converts to 1-phase DC output. • Buck-boost converter outputs compatible voltage levels to the inverter.

  19. SDMAY 12-24 MATLAB Model for Rectifier/Buck-Boost Circuit Schematics 

  20. SDMAY 12-24 Pulse-Width Modulation • Used to control switch in the buck-boost circuit. • Circuitry controlled by LabVIEW via NI-DAQ. • Varying switching frequency and duty cycle depending on the load. • Feedback duty cycle control

  21. SDMAY 12-24

  22. SDMAY 12-24 Organization – Plexiglas Boxes

  23. SDMAY 12-24 Testing • Diode Rectifier • Clean DC signal sent to Buck-boost. • Buck-boost converter • Signal outputs desired voltage level. • PWM • Able to control the width of modulation. • Full System • All circuits interact correctly.

  24. SDMAY 12-24 Testing Process

  25. SDMAY 12-24 Final System

  26. SDMAY 12-24 Total Cost and Time Spent $175 – 1.5 HP Motor $70 – Coupling/Mounting $50 – Hardware $55 – Circuitry $350 – Total $500 – Budget

  27. SDMAY 12-24 Any Questions??

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