10 MW Superconducting Generator Design for Offshore Wind Turbines



15 W Power Amplifier Modules Using Coaxial Waveguide Combining by Planar Probes
Suna, Gonca; Eker, Taylan; Akkul, Mustafa; Incebacak, Mustafa; Demir, Şimşek; Yliditim, Nevzat (2014-07-11)
Power combining in coaxial waveguide by printed planar probes is investigated. Combiners are designed and implemented at 8-12 GHz and 15-18 GHz. Average introduced insertion loss is measured as 0.5 dB per branch. Power amplifier modules are designed and implemented for both bands. similar to 20 W output power at 8-12 GHz and similar to 12 W output at 15-18 GHz are achieved by efficient power combining.
1kW Contactless Slip Ring Design Using Series-Series Resonant Converter Topology
Polat, Hakan; Keysan, Ozan; Department of Electrical and Electronics Engineering (2021-6-24)
Slip rings are often used in wound rotor synchronous machines to supply required field excitation during rotation. They mainly consist of carbon brushes and copper rings where the power transmission is achieved by constant friction, which results in mechanical wear over time. To eliminate the contact, brushless exciters are used. However, their low-speed operation is problematic. Therefore, in this thesis, the aim is to design a contactless slip-ring with improved fault tolerance to supply the required fiel...
16 kHz vlf reception and investigation of aging in a quartz crystal by phase comparison method.
Alaçakır, Ali; Department of Physics (1983)
35 GHz phased array antenna using DMTL phase shifters
Guclu, Caner; Cetintepe, Cagri; Aydın Çivi, Hatice Özlem; Demir, Şimşek; Akın, Tayfun (2010-08-27)
This paper presents the design of a monolithic phased array antenna with DMTL phase shifters on quartz substrate operating at 35 GHz. The design integrates DMTL phase shifters, rectangular slot antennas with the feed network comprising CPW lines, CPW T-junction and corners. On the four branches of the antenna, there are 5-bit phase shifters using 31 MEMS bridges, covering 360° with a resolution of 11.25°.
13.56 MHz Triple Mode Rectifier Circuit with Extended Coupling Range for Wirelessly Powered Implantable Medical Devices.
Engur, Yasemin; Yigit, Halil Andac; Külah, Haluk (Institute of Electrical and Electronics Engineers (IEEE), 2020-12-25)
In this work, a wide input/output range triple mode rectifier circuit operating at 13.56 MHz is implemented to power up medical implants. The proposed novel multi-mode rectifier circuit charges the load for an extended coupling range and eliminates the requirement of alignment magnets. The charging process is achieved in three different modes based on the voltage level of the received signal affected by the distance and the alignment of the inductively coupled coils. Current mode (CM) circuit is activated f...
Citation Formats
O. Keysan, “10 MW Superconducting Generator Design for Offshore Wind Turbines,” 2015, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/77264.