Application of high-temperature superconducting machines to direct drive renewable energy systems

After the discovery of high-temperature superconductors, superconducting machines became more feasible and have been applied to many applications such as ship propulsion systems. Superconducting machines are lighter, smaller and more efficient than conventional generators. In this chapter, mass of different direct drive generators systems have been compared. Direct drive superconducting generators have the potential to reduce the nacelle mass and the installation cost of a large offshore wind turbine. Ongoing commercial projects and the requirements for a reliable direct drive superconducting generator are both listed.


Investigation of the structural properties of silicene nanoribbons by molecular dynamics simulations
İnce, Alper; Erkoç, Şakir; Aydınol, Mehmet Kadri; Department of Micro and Nanotechnology (2012)
With the emergence of nanotechnology, mankind has obtained the capability to manipulate materials at nanoscale and this led to the invention of a new group of novel materials like carbon nanotubes, graphene and quantum nanodots. Silicene nanoribbons (SiNRs) are one of the newest members of this nanomaterial family which has been synthesized very recently by deposition on silver substrates. A SiNR sheet is made up of a layer of two dimensional honeycomb structure solely composed of silicon atoms. In this the...
Preparation and characterization of shape memory polymer based composite materials for aerospace applications
Ersaraç, Feride Nur; Bayram, Göknur; Doğangün Akın, Aysun; Department of Chemical Engineering (2015)
Most aerospace industries are working on the adaptive structures by using shape memory (SM) materials in order to increase the flight performance. Shape Memory Materials are smart materials that have the capability of return from temporary shape to the permanent shape upon application of an external stimulus. The main objective of this study is to develop a shape memory polymer in a thermoset structure where the triggering mechanism is heating and to investigate its applicability in aerospace field. The SM ...
Development of a structural design methodology for filament winding composite rocket motor case
Erturan, Yakup; Gürses, Ercan; Department of Aerospace Engineering (2019)
Filament winding pressure vessels have a unique place in many areas such as space and ground applications for decades. Filament winding pressure vessels are used in products where weight is very critical. In such applications, composite winding pressure vessels have significant advantages over metal pressure vessels due to their high specific strength. In this study, it is aimed to design and analyze composite rocket motor cases produced by the filament winding method. Within the scope of the study, the dom...
Numerical simulation of two-dimensional collisionless plasma flows under the effect of electrostatic forces via particle in cell method
Tümüklü, Özgür; Çelenligil, Mehmet Cevdet; Şengil, Nevsan; Department of Aerospace Engineering (2013)
Taking its name from its ability to generate thrust via electricity, the concept of electric propulsion has important space mission applications like station keeping for satellites and deep space probe. However, contamination of plumes in electric propulsion systems with ion beam could hinder communication, and effective neutralization is essential to clear away this predicament. Today, computer simulation is regarded as a powerful tool to investigate plasma behavior in the plumes of electric propulsion dev...
Production of single heavy charged leptons at a linear collider
De Pree, Erin; Sher, Marc; Turan, İsmail (American Physical Society (APS), 2008-05-01)
A sequential fourth generation of quarks and leptons is allowed by precision electroweak constraints if the mass splitting between the heavy quarks is between 50 and 80 GeV. Although heavy quarks can be easily detected at the LHC, it is very difficult to detect a sequential heavy charged lepton, L, due to large backgrounds. Should the L mass be above 250 GeV, it cannot be pair-produced at a 500 GeV ILC. We calculate the cross section for the one-loop process e(+)e(-)-> L tau. Although the cross section is s...
Citation Formats
O. Keysan, “Application of high-temperature superconducting machines to direct drive renewable energy systems,” ELECTRICAL DRIVES FOR DIRECT DRIVE RENEWABLE ENERGY SYSTEMS, pp. 219–252, 2013, Accessed: 00, 2020. [Online]. Available: