Control and Grid Integration Techniques for Renewable Energy Sources

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Control and Grid Integration Techniques for Renewable Energy Sources

Learning Outcomes

Explain capacities for integration of renewable energy sources in electricity grids and their specifics thereby
Outline the influence of individual renewable energy sources on the environment
Explain the connection of individual wind turbines in a wind farm to the grid and grid conditions for wind farm connection
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
Use vector control for grid-tied inverter control in a plant with a renewable energy source
Breakdown basic components and the wind turbine set-up
Operate basic generator types that are used in wind turbines and control methods for their corresponding generator power converters
Demonstrate the principle of generating wind turbine torque from wind and its related mathematical model
Derive the basic method for wind turbine control in the entire wind speeds spectrum
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

RES integration capacity, RES generation specifics
Technical requirements regarding frequency and voltage, Fault ride-through requirements
Additional RES integration costs, Technical and economical impacts of wind power plants on power system
Environmental studies, Electrical wind turbines connection in a wind farm, Grid codes, wind farm integration into the electrical energy system
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
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
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
Midterm exam
Generator types in wind turbines and related power converters configurations, Generator to grid connection via AC/DC/AC power converter -- basic components
Basic wind turbine components, Generator-side power converter control
Modelling the process of generating aerodynamic torque from wind, Wind turbine power, torque and thrust-force curves for the wind turbine
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
Control for maximum power point tracking
Control for maximum power point tracking
Final exam