Allowing Large Penetration of Concentrated RES in Europe and North Africa via a Hybrid HVAC-HVDC Grid Tao Huang, Haoke Wu, Lorenzo Solida, Ettore Bompard (2023) Allowing Large Penetration of Concentrated RES in Europe and North Africa via a Hybrid HVAC-HVDC Grid, In: ENERGIES, ISSN: 1996-1073