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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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Wind Energy System

By: Andy Brown, Basheer Qattum & Ali Gokal

Advisors: Dr. Na & Dr. Huggins


  • Introduction

  • Hardware

  • Software

  • Results

  • Future Steps


  •  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


  • 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

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

Wind-Electric Systems

  • Induction Generators, Directly Connected to the Grid

  • Doubly-Fed, Wound Rotor Induction Generators

  • Power Electronics Connected Generator

Functional Description

Sub Systems

  • Generator

  • Diode Rectifier

  • Boost Converters

  • Inverter

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

Brushless DC Motor


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

Three-Phase Diode Rectifier

Vin = 64.0 V

Vo = 84.0 V

Io = 961 mA

Speed = 3000 RPM

R = 88Ω

P = 80.72W

Three-Phase Diode Rectifier

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


DC Voltage

Vo = 85.0 V

Io = 964 mA

Speed = 3000 RPM

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

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

Gate Driver

Most time consuming part of Boost converter

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

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

Controller Implementation Process




Testing CircuitSingle Channel Boost Converter

SimulationOpen-Loop Controller

Testing CircuitOpen Loop Controller

Testing HardwareOutput Results

Testing HardwareOutput

  • Duty Cycle: 20%

  • Input Voltage: 5.00 V

  • Output Voltage: 6.00 V

Interleaved Boost ConverterOpen-Loop Controller

Interleaved Boost ConverterOpen-Loop Controller

Interleaved Boost ConverterOpen-Loop ControllerOutput

Single Phase Inverter Controller

  • Sinusoidal Pulse Width Modulation

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

LC Filter

Magnitude Bode Plot for Second-Order LC Filter

LC Filter

  • Chose L = .125mH

  • Yields C = 240uF

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

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


  • Perturbation and Observation Method (P&O)

    • MPPT algorithm adjusts duty cycle to achieve

MPPTCurrent Controller Design