Offshore wind grid connection and high-voltage DC (HVDC) transmission

• Describe the most common topologies for transmission and grid connection of offshore wind
• Design offshore electrical infrastructure
• Define the main requirements for grid connection of offshore wind
• Implement models of wind turbines, converters, and HVDC transmission/grids
• Explain the basic principles of control and operation of offshore wind, voltage source converters and HVDC transmission/grids
• Assess models and control strategies of voltage source converters and HVDC transmission/grids
• Analyse the operation of offshore HVDC grids including large-scale offshore wind
• Analyse, explain, and present simulation results

Part 1 – Offshore wind power: Introduction & offshore wind power status and trends; Offshore wind turbines and power plants; Electrical design in offshore wind power plants; Grid connection and integration of offshore wind power plants; Grid codes; Dynamic models for offshore wind power plants
Part 2 – Modelling and control of converters: Converter structures and modelling approaches; Reference frames (transformations) and grid synchronisation (PLL); Cascaded/vector control – inner (current) and outer control loops in rotating (dq) reference frame; Fault ride-through (FRT)
Part 3 – HVDC transmission and grids: HVDC transmission – LCC- and VSC-HVDC from the perspective of offshore wind; HVDC transmission configurations; power flow in HVDC transmission; HVDC grids; Control principles and operation of HVDC grids

46230/46745/46700, Basic knowledge of power electronics and physical modelling and MATLAB/Simulink or similar

Lectures, computer exercises, and a mandatory assignment.
For the assignment, students must work in groups of max. 4.