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Rotating machines are widely used in industry. They are composed of rotative components such as shaft and blades, which are connected to a static support structure by bearings. Rolling bearings and fluid lubricated bearings are commonly used for this function. However, in the last decades, active magnetic bearings (AMB) have gained importance in some applications. These bearings can support the shaft of such machines without contact and apply active control through electromagnetic forces. On the other hand, uncertainties are inherent to engineering systems and they should be quantified to obtain better models. Bayesian inference is an interesting option to identify or update the probability distributions of a random variable. Monte Carlo via Markov chains is usually implemented to solve the inference, but its processing time can be long. By using generalized polynomial chaos expansion, the solution process is accelerated. This work aims to identify the AMB parameters and unbalance force. After the identification, the stochastic response is evaluated and compared with experimental data from a test rig supported by AMB. The robustness of the identification is evaluated by inserting noise in the signal. A sensitivity analysis is performed through Sobol indices to evaluate if the AMB uncertainties should be considered in future analyses.

37th European Photovoltaic Solar Energy Conference and Exhibition; 2010-2013, As is the case with many countries, Switzerland is facing a tough challenge: it has to replace nuclear power and to decarbonize its entire economic system. This transformation will need much more electricity. By 2050, Switzerland will need around twice the electrical energy than its existing hydropower can deliver. Since wind power has a modest potential in Switzerland, the only practical possibility is to scale-up PV by 25x. Therefore, the country faces a huge investment in its power generation; this, besides insulating buildings and transforming the transport sector. Roger Nordmann has developed a complete plan to implement such a PV expansion at the national level, including management of the electrical network. His plan is now shifting the political lines toward a much more PV-friendly attitude for politics and business. This speech discusses the key features of this plan. Some aspects of the plan – for instance, the interaction with the existing important hydro power storage – are specific to Switzerland. Other aspects, such as peak-shaving and the political narrative, are relevant and can be applied in other countries. Thanks to his long political experience and his expertise in the energy field, he constructed his “solar plan” based on a logic which can be accepted and endorsed by the established electricity sector. He presents a method of systemic policy ant politics perspective.