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Absrracr-The steady-state behaviour of an induction machine silh a symmetric rotor cage and a faulty asymmetric Stator is analyzed. The asymmetric machine is modeled by means of the space vector approach. The winding asymmetry is taken into account by considering each conductor of every single slot separately. Harmonic components of Ihe permeance produced by the rotor ~l o l s are taken into account too. Harmonic slotting components of stator currents have been computed for diffeermt faulty machines affected by short circuils with dimerent values of Ihe dimensions of the rotor slots, different numbers of the rotor bars and diNercnt polc-pairs.In the paper the behaviour of induction machines affected by statorsholt circuits is analyzed by assuming the dominant Slot harmonic components of as diagnostic indexes. ne influence of some electric and geon,etric on these components is MATHEMATICAL MODELThe faulted stator winding is asymmetric and has M coils with any turn number; the connections of these.elementary coils depend on the location of the short-circuits (Fig I). In order to develop a faulted machine model it is referred to a cylindrical asynchronous motor with a symmetric rotor cage In recent years the analysis of anomalous operations of (~i~. 2). asynchronous machines to diagnostic aims has been notably developed. Two different methods have been commonly used: A. A~~~~~, ;~~ the acquisition of an experimental data set or a "model based"approach. In the experimental approach the monitoring strategy . has employed vibration, electric and stray flux signals [I], [2]. .The "model based" approach is P a i c u W convenient because . the resistance a machine model, able to predict the behaviour of a faulty machine; allows a great number of cases to be simulated and the correlation between the numencal results and the different wssible faults to be found. The results of the analvsis of fault

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h i g h l i g h t sA method to evaluate the potential for electric power production at geothermal sites. It evaluates geofluid's flow rate, pressure, temperature and non-condensable gases. It defines the best plant option and finally returns the actual available power. a r t i c l e i n f o b s t r a c tThe paper proposes a method to evaluate the potential for electric power production at any site of possible geothermal interest. Accounting for geological data of the reservoirs, the method allows the computation of the available electrical power of the investigated site. Electrical energy production from geothermal sources is realized through different techniques, such as single flash and double flash, dry steam, and binary ORC plants. The technique chosen to be the most productive is determined by analyzing a specific range of geofluid properties, mainly temperature and pressure. Moreover, each plant typology has a global efficiency that may be correlated to geofluid enthalpy by empiric relations available in literature. The proposed evaluation method brings together all these correlations, yielding the power availability from a geosource, once its temperature and pressure are known. The method takes as input the geofluid available flow rate, its pressure, temperature and non-condensable gas content. It defines the best plant option from these parameters, calculates its global efficiency and finally returns the actual available power. For sites of geothermic interest, such as the volcanic island of Ischia in Southern Italy, the results of the application of this new method clearly highlight the most suitable zones for power plants installations.