Adaptive Backstepping Control and Stabilization of VSC-HVDC Systems

today, electricity transmission capacity is growing due to renewable energy generation and the needs of the electricity market. The result is a major breakthrough in the development of HVDC transport systems to overcome the limitations of HVAC transport systems. This progress is linked to the innovation of new topologies of power converters which play a key role in providing the high reliability, good efficiency and cost-effectiveness of HVDC transport systems. This article discusses a non-linear control approach based on the Adaptive Backstepping method in order to regulate the DC bus voltage and ensure stability of the HVDC system despite disturbances. The validity of the proposed control is tested by simulation in the Matlab/Simulink environment under different operating conditions and effectively demonstrates its contribution to improving the performance of our system.