Modeling, Control And Design Of Wind Energy Systems at TU München | Flashcards & Summaries

Lernmaterialien für Modeling, Control and Design of Wind Energy Systems an der TU München

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TESTE DEIN WISSEN

1 How do modern wind turbine usually look like?

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TESTE DEIN WISSEN

• Horizontal-axis three-bladed upwind variable-speed wind turbine
• Pitch control
• Various typologies depending on generator type, location of main
bearings, gearbox, brake, …

Lösung ausblenden
TESTE DEIN WISSEN

1 What are pros and conts of direct drive or turbines with gearboxes?

Lösung anzeigen
TESTE DEIN WISSEN

direct driven do not need a complex gearbox but generate less energy due to low speed

Lösung ausblenden
TESTE DEIN WISSEN

Name 4 issues affecting the growth of wind energy systems

Lösung anzeigen
TESTE DEIN WISSEN

beyond reach of wind power technology: policy uncertainties, permitting and approval time

Affected by technological innovation: social acceptance, environmental impact

Lösung ausblenden
TESTE DEIN WISSEN

1 Name 5 negative wind energy impacts

Lösung anzeigen
TESTE DEIN WISSEN

Noise

Recycling

local climate

wildlife

Visual impact

Lösung ausblenden
TESTE DEIN WISSEN

1 Name 5 areas of technological innovation at wind turbine level

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TESTE DEIN WISSEN

aerodynamics

materials

active smart blade

electromechanical conversion

contruction technilogy

Lösung ausblenden
TESTE DEIN WISSEN

1 Name 4 significant differences with respect to aeronautical applications

Lösung anzeigen
TESTE DEIN WISSEN

- dimensions (need of large volumes but low cost materials)

- reliability/maintenance: performance with simplicity and robustness

- key design objective: low CoE for wind energy (Cost of Energy)

- rotating components

Lösung ausblenden
TESTE DEIN WISSEN

1 What is one of the most effective ways to reduce CoE?

Lösung anzeigen
TESTE DEIN WISSEN

Increase AEP (Anual energy production)


Lösung ausblenden
TESTE DEIN WISSEN

1 Name 3 trends aiming more efficiency

Lösung anzeigen
TESTE DEIN WISSEN

- higher tower -> higher wind speed because of vertical shear

- large swept area -> larger power capture

- improved capacity factor -> lower CoE

Lösung ausblenden
TESTE DEIN WISSEN

1 Name 5 reason for going off-shore

Lösung anzeigen
TESTE DEIN WISSEN
  • huge available resouces
  • improved social acceptability
  • lower environmental impact
  • scale/ logistics (production more and more at habour)
  • potential for reduces LCOE
Lösung ausblenden
TESTE DEIN WISSEN

2 4 Hypotheses of the 1D annular stream tube theory

Lösung anzeigen
TESTE DEIN WISSEN
  • stationary flow
  • constant mass flow rate along stream tube
  • incompressible and inviscid flow
  • actuator disk
Lösung ausblenden
TESTE DEIN WISSEN

1 Explain why there is a tendency in increased wind turbine size

Lösung anzeigen
TESTE DEIN WISSEN

Main goal is to reduce CoE -> one of the most effective ways is to increase AEP

With a increased diameter/ increased swept area 

  • the power capture is larger
  • the wind speed is higher due to a higher tower
Lösung ausblenden
TESTE DEIN WISSEN

When was the precursor of modern wind turbines invented? Name the 3 main improvments

Lösung anzeigen
TESTE DEIN WISSEN

1500 in Europe -> horizontal axis, furling blades (Rollschaufeln), Yaw control

Lösung ausblenden
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Q:

1 How do modern wind turbine usually look like?

A:

• Horizontal-axis three-bladed upwind variable-speed wind turbine
• Pitch control
• Various typologies depending on generator type, location of main
bearings, gearbox, brake, …

Q:

1 What are pros and conts of direct drive or turbines with gearboxes?

A:

direct driven do not need a complex gearbox but generate less energy due to low speed

Q:

Name 4 issues affecting the growth of wind energy systems

A:

beyond reach of wind power technology: policy uncertainties, permitting and approval time

Affected by technological innovation: social acceptance, environmental impact

Q:

1 Name 5 negative wind energy impacts

A:

Noise

Recycling

local climate

wildlife

Visual impact

Q:

1 Name 5 areas of technological innovation at wind turbine level

A:

aerodynamics

materials

active smart blade

electromechanical conversion

contruction technilogy

Mehr Karteikarten anzeigen
Q:

1 Name 4 significant differences with respect to aeronautical applications

A:

- dimensions (need of large volumes but low cost materials)

- reliability/maintenance: performance with simplicity and robustness

- key design objective: low CoE for wind energy (Cost of Energy)

- rotating components

Q:

1 What is one of the most effective ways to reduce CoE?

A:

Increase AEP (Anual energy production)


Q:

1 Name 3 trends aiming more efficiency

A:

- higher tower -> higher wind speed because of vertical shear

- large swept area -> larger power capture

- improved capacity factor -> lower CoE

Q:

1 Name 5 reason for going off-shore

A:
  • huge available resouces
  • improved social acceptability
  • lower environmental impact
  • scale/ logistics (production more and more at habour)
  • potential for reduces LCOE
Q:

2 4 Hypotheses of the 1D annular stream tube theory

A:
  • stationary flow
  • constant mass flow rate along stream tube
  • incompressible and inviscid flow
  • actuator disk
Q:

1 Explain why there is a tendency in increased wind turbine size

A:

Main goal is to reduce CoE -> one of the most effective ways is to increase AEP

With a increased diameter/ increased swept area 

  • the power capture is larger
  • the wind speed is higher due to a higher tower
Q:

When was the precursor of modern wind turbines invented? Name the 3 main improvments

A:

1500 in Europe -> horizontal axis, furling blades (Rollschaufeln), Yaw control

Modeling, Control and Design of Wind Energy Systems

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