Stefan Giurgea

Learn More
The optimal design of a photovoltaic hybrid system is time consuming and complex. Therefore, this paper proposes a study of this problem by modelling the system from the energy point of view. The hybrid system is composed of photovoltaic cells, a battery, and a fuel cell supplying a stand-alone street lighting system. After characterizing the problem, an(More)
In this paper, a data-driven strategy is proposed for PEMFC (polymer electrolyte membrane fuel cell) diagnosis. In the strategy, parity space is directly identified from normal process data without modeling. With the identified parity space, a group residuals can be generated and evaluated to achieve fault detection. In addition, a multi-class SVM (support(More)
In this paper, a data-based strategy is proposed for PEMFC (polymer electrolyte membrane fuel cell) diagnosis. In the strategy, the feature extraction method Fisher Discriminant Analysis (FDA) is used firstly to extract the features from individual cell voltages. After that, the classification method Spherical-Shaped Multiple-class Support Vector Machine(More)
  • 1