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Wind Energy System. By: Andy Brown, Basheer Qattum & Ali Gokal Advisors: Dr. Na & Dr. Huggins. Outline. Introduction Hardware Software Results Future Steps. History of Wind Energy Utilization. ADVANTAGES OF WIND POWER.

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Presentation Transcript
slide1

Wind Energy System

By: Andy Brown, Basheer Qattum & Ali Gokal

Advisors: Dr. Na & Dr. Huggins

slide2

Outline

  • Introduction
  • Hardware
  • Software
  • Results
  • Future Steps
slide4

ADVANTAGES OF WIND POWER

  •  Wind is free and with modern technology it can be captured efficiently
  • Wind does not cause green house gases or other pollutants
  • Although wind turbines can be very tall each takes up only a small plot of land
  • Excellent source for remote areas not connected to a grid
  • Wind turbines have a role to play in both the developed and third world
  • Available in a range of sizes meaning a vast range of people and businesses can use them
  • Environmentally Friendly
  • Economically Competitive
slide5

Goals

  • Output maximum power despite fluctuating wind conditions.
  • Utilize power electronics to perform conversions
  • Successfully implement a DSP board to have a greater degree of control over our system to harness optimal energy
  • To create a system that is applicable with real world industry
slide6

Functional Requirements (Hardware)

  • Shall be able to produce .75 kilowatt but not more then 5 kilowatts
  • Shall be able to convert wind power to single phase AC power
  • Must be able to maximize wind power conversion
slide7

Wind-Electric Systems

  • Induction Generators, Directly Connected to the Grid
  • Doubly-Fed, Wound Rotor Induction Generators
  • Power Electronics Connected Generator
slide9

Functional Description

Sub Systems

  • Generator
  • Diode Rectifier
  • Boost Converters
  • Inverter
slide10

Brushless DC Motor

Due to complications with size and Lab requirements, PMSG still.

Max Current 5.4 A

Max Speed 3600 RPM

Max Voltage 160 V

Max Power 750 W

slide11

Brushless DC Motor

ɳ=(120*f)/(poles)

slide13

Three-Phase Diode Rectifier

Output of DC generator after 3phase diode rectifier w/1.5mF Cap

Max Peak Voltage 1600V

Max Peak Current 300A

Max Current 25A

Max Voltage 600V

V = I*R Vo=(1.35Vin – VDiode)

P = I*V ɳ=(120*f)/(poles)

Value of capacitor to ensure clear signal

C=(Vp/2*f*Vr) =534μF

Therefore we used 1.5mF

slide14

Three-Phase Diode Rectifier

Vin = 64.0 V

Vo = 84.0 V

Io = 961 mA

Speed = 3000 RPM

R = 88Ω

P = 80.72W

slide15

Three-Phase Diode Rectifier

Output of DC generator after 3phase diode rectifier w/o Cap

Current

DC Voltage

Vo = 85.0 V

Io = 964 mA

Speed = 3000 RPM

slide16

Three-Phase Diode Rectifier

Output of DC generator after 3phase diode rectifier w/1.5mF Cap

DC Voltage

3φ Voltage

Vin = 64.0 V

Vo = 84.0 V

Io = 961 mA

Speed = 3000 RPM

slide19

Boost Converter

Vo=Vin/(1-D), or for more accurate values,

Vo= {[(VIn-VIGBT*D)/(1-D)] – VDiode}

IGBT: Switching Freq up to 300kHz

Max voltage at 600V

Max current at 60A

slide22

Gate Driver

Most time consuming part of Boost converter

slide23

Gate Driver

  • Gate to emitter (pulse) ±30V
  • Gate to emitter (cont) ±20V
  • Max Gate Current ±250uA
  • Gate driver output +18V
  • 120/14 VAC-RMS 17.89VDC
  • Output up too 600V
  • Current up to 2A
  • Shutdown mode for protection
slide27

DSP Board - TI TMS320F2812

  • PWM Generation
    • 16-Bit
    • 16 PWM outputs
    • 0 V – 3.3 V
  • ADC
    • 12-Bit
    • Analog Input: 0 V - 3 V
slide28

Controller Implementation Process

SIMULINK

DSP

CODE COMPOSER

slide33

Testing HardwareOutput

  • Duty Cycle: 20%
  • Input Voltage: 5.00 V
  • Output Voltage: 6.00 V
slide43

Single Phase Inverter Controller

  • Sinusoidal Pulse Width Modulation
slide44

Unipolar PWM

Vout = Vd When T1,T4 is ON

Vout=-Vd When T2,T3 is ON

Vout=0 When T1,T3 or T2,T4 is ON

slide46

LC Filter

Magnitude Bode Plot for Second-Order LC Filter

slide47

LC Filter

  • Chose L = .125mH
  • Yields C = 240uF
slide52

Future Work - Controller

  • Closed-Loop Voltage and Current Controller for Two-Channel Interleaved Boost Converter
  • Maximum Power Point Tracking Controller
  • Single-Phase Inverter Controller with Unity Power Factor Correction
slide53

Interleaved Boost Converter Voltage-Current Controller

  • Same Controller as designed
  • Need to output two PWM signal
    • The second PWM signal has to been delayed by half the period
slide56

MPPT

  • Perturbation and Observation Method (P&O)
    • MPPT algorithm adjusts duty cycle to achieve
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