A Model-Free Direct Control Solution for Multiphase Electric Drives based on Gradients of Electric Variables - Mora-Moreno, P; Gonzalez-Prieto, I; Carrillo-Rios, J; Duran, MJ; Aciego, JJ; Gonzalez-Prieto, A (2024 14th International Electric Drives Production Conference, Edpc, 2024)