Control and Grid Integration Techniques for Renewable Energy Sources

Learning Outcomes

  1. Explain capacities for integration of renewable energy sources in electricity grids and their specifics thereby
  2. Outline the influence of individual renewable energy sources on the environment
  3. Explain the connection of individual wind turbines in a wind farm to the grid and grid conditions for wind farm connection
  4. Explain the set-up and model of the inverter that enables the connection to the grid of a renewable energy source plant with internal direct current circuit
  5. Use vector control for grid-tied inverter control in a plant with a renewable energy source
  6. Breakdown basic components and the wind turbine set-up
  7. Operate basic generator types that are used in wind turbines and control methods for their corresponding generator power converters
  8. Demonstrate the principle of generating wind turbine torque from wind and its related mathematical model
  9. Derive the basic method for wind turbine control in the entire wind speeds spectrum
  10. Outline the current-voltage model of a photovoltaic array and its control mode for maximum power point tracking

Forms of Teaching

Lectures

Laboratory

Week by Week Schedule

  1. RES integration capacity, RES generation specifics
  2. Technical requirements regarding frequency and voltage, Fault ride-through requirements
  3. Additional RES integration costs, Technical and economical impacts of wind power plants on power system
  4. Environmental studies, Electrical wind turbines connection in a wind farm, Grid codes, wind farm integration into the electrical energy system
  5. Equivalent circuit of the single phase full bridge inverter; Nonlinear model with passive load; Linear model and transfer function, Fundamentals of the output voltage and output power control, Model of the full bridge inverter in the grid connection
  6. Equivalent circuit of the three phase full bridge inverter; Nonlinear model with passive load; Linear model and transfer function, Vector control, Model of the full bridge three phase inverter in the grid connection, DC-link and grid-side power converter control
  7. Output power control, Model of the full bridge transformer coupled inverters in grid connection, Control of the full bridge transformer coupled inverters in grid connection, Photovoltaic power converter control in non-maximum-power-point-tracking regime
  8. Midterm exam
  9. Generator types in wind turbines and related power converters configurations, Generator to grid connection via AC/DC/AC power converter -- basic components
  10. Basic wind turbine components, Generator-side power converter control
  11. Modelling the process of generating aerodynamic torque from wind, Wind turbine power, torque and thrust-force curves for the wind turbine
  12. Wind turbine control for wind speeds below nominal, Wind turbine control for wind speeds above nominal, Wind turbine control in boundary wind speed areas, Basic wind turbine control system
  13. Control for maximum power point tracking
  14. Control for maximum power point tracking
  15. Final exam

Study Programmes

University graduate
Electrical Power Engineering (profile)
Recommended elective courses (3. semester)

Literature

(.), Remus Teodorescu, Marco Liserre. Grid Converters for Photovoltaic and Wind Power Systems. John Wiley & Sons, 2011.,

For students

General

ID 223756
  Winter semester
5 ECTS
L3 English Level
L1 e-Learning
30 Lectures
15 Exercises
12 Laboratory exercises