1. Department of Electrical Engineering, Centro de Energía, Universidad Católica de la Santísima Concepción, Concepción 4090541, Chile
2. Department of Engineering, University of Cambridge, Cambridge CB3 0FA, UK
3. Department of Electrical Engineering, Duke University, Durham, NC 27710, USA
4. DCE&S Group, Department of Electrical Sustainable Energy, Delft University of Technology, 2628 CD Delft, The Netherlands