Grid-forming converters are advanced power electronic devices which support voltage and frequency control in electrical grids. They offer several substantial benefits: improving resilience by counteracting voltage and frequency inconsistencies during faults and disturbances, enabling better integration of renewables and storage devices by stabilising systems with large numbers of inverter-based resources, and restarting grids after blackouts without depending on conventional non-renewable energy sources. Thanks to these properties, transmission system operators are pushing for their integration into power system all over the world. Understanding how to model, control and integrate grid-forming converters is therefore an increasingly important requirement for operators and engineers in the power electronics and power systems fields.

• Chapter 1: Introduction: General considerations about transmission power systems
• Chapter 2: Introduction to grid-connected dynamic analysis of power electronic converters - application to grid-following control
• Chapter 3: Unified approach for the design of Grid-Forming control
• Chapter 4: Current limitation and large disturbance stability with grid forming control
• Chapter 5: Adaptation of a GFM control to the Medium Voltage distribution grid
• Chapter 6: Application of Grid forming control to Wind turbine and storage
• Chapter 7: Grid-forming control and MMCs: application to HVDC links
• Chapter 8: Influence of the power electronic converters on the frequency behaviour
• Chapter 9: Small signal stability analysis of a grid-connected VSC
• Chapter 10: Impedance-based approach for small-signal stability analysis