THEORETICAL ELEMENTS FOR ENERGETIC MODELS AND PHYSICAL DESIGN OF ELECTROMECHANICAL DEVICES, PART I: THERMODYNAMIC METHODS

摘要

The goal of this paper is to set the theoretical bases over a physical and global analysis and design processes for electromechanical devices. A global optimisation of the design is necessary to establish an unified interactions formalism in electromechanical devices, considered as multi-physic systems. Several kinds of magnetostatic interactions are analysed and systematised, according a thermodynamic description of the system. This description shows the free energy and enthalpy densities as thermodynamic state functions equivalents to the classical electromagnetic densities of energy and co-energy. The free energy or free enthalpy densities are obtained, as well as interaction energy and co-energy, for the different studied systems. A previous work of schematisation is necessary for the analysis of variational procedures on energy and co-energy, that leads us to obtain the Maxwell tensors and Lagrangian density. This analysis will be shown in a posterior paper.