1. Automatic, Electric and Electronic and Industrial Computing Department, ETSII, Universidad Politécnica de Madrid, Madrid, Spain
2. Energy and Fuels Department, ETSIME, Universidad Politécnica de Madrid, Madrid, Spain
3. Department of Electrical Engineering, Korea University, Seoul, South Korea
4. School of Electrical and Computer Engineering, Technical University of Crete, Chania, Greece
5. Instituto Tecnologico de la Energia, Universitat Politècnica de València, Valencia, Spain