Browsing by Author "Sanz, S."
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Item Application of MgB2 in superconducting wind turbine generators(2014) Pujana, A.; Marino, I.; Sarmiento, G.; Sanz, S.; Merino, J. M.; Villate, J. L.; DIGITAL ENERGY; Tecnalia Research & Innovation; GENERALOffshore wind market demands higher power rate and more reliable turbines in order to optimize capital and operational costs. The state-of-the-art shows that both geared and direct-drive generators are difficult to scale up to 10 MW and beyond. Their huge size and weight would drive up the cost of both fixed and floating foundations, as well as installation, operation and maintenance costs. New solutions to provide better power scalability, topside weight reduction and reliability are needed. Superconducting materials arise as a prominent solution for lightweight, high power wind generators construction [1]. There are already several superconducting generator concepts, but they face important challenges as cost, complexity and reliability. This work presents the application of MgB2 superconducting wire in an innovative 10 MW class lightweight, robust and reliable generator for wind turbines, which gives answer to the offshore sector demands while overcomes other superconducting generators challenges.Item Design, manufacturing and tests of first cryogen-free MgB2 prototype coils for offshore wind generators(2014) Sarmiento, G.; Sanz, S.; Pujana, A.; Merino, J. M.; Iturbe, R.; Apiñaniz, S.; Nardelli, D.; Marino, I.; Tecnalia Research & Innovation; DIGITAL ENERGY; POWER ELECTRONICS AND SYSTEM EQUIPMENTAlthough renewable sector has started to take advantage of the offshore wind energy recently, the development is very intense. Turbines reliability, size, and cost are key aspects for the wind industry, especially in marine locations. A superconducting generator will allow a significant reduction in terms of weight and size, but cost and reliability are two aspects to deal with. MgB2 wire is presented as one promising option to be used in superconducting coils for wind generators. This work shows the experimental results in first cryogen-free MgB2 prototype coils, designed according to specific requirements of TECNALIA's wind generator concept.Item Superconducting light generator for large offshore wind turbines(2014) Sanz, S.; Arlaban, T.; Manzanas, R.; Tropeano, M.; Funke, R.; Ková, P.; Yang, Y.; Neumann, H.; Mondesert, B.; Tecnalia Research & InnovationOffshore wind market demands higher power rate and reliable turbines in order to optimize capital and operational cost. These requests are difficult to overcome with conventional generator technologies due to a significant weight and cost increase with the scaling up. Thus superconducting materials appears as a prominent solution for wind generators, based on their capacity to held high current densities with very small losses, which permits to efficiently replace copper conductors mainly in the rotor field coils. However the state-of-the-art superconducting generator concepts still seem to be expensive and technically challenging for the marine environment. This paper describes a 10 MW class novel direct drive superconducting generator, based on MgB2 wires and a modular cryogen free cooling system, which has been specifically designed for the offshore wind industry needs.