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Design and Analysis of a Novel High Temperature Superconducting Synchronous Machine

Title: Design and Analysis of a Novel High Temperature Superconducting Synchronous Machine.
Name(s): Mishra, Subhendu, author
Pamidi, Sastry V., professor directing thesis
Lipo, Thomas A., committee member
Foo, Simon Y., committee member
Andrei, Petru, committee member
Florida State University, degree granting institution
College of Engineering, degree granting college
Department of Electrical and Computer Engineering , degree granting department
Type of Resource: text
Genre: Text
Master Thesis
Issuance: monographic
Date Issued: 2017
Publisher: Florida State University
Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
online resource
Extent: 1 online resource (86 pages)
Language(s): English
Abstract/Description: It has been clear in the recent decades that there is an urgent need to progress towards renewable energy. There are few established technologies that provide a suitable economic option. These include hydropower, solar, wind, geothermal, nuclear etc. Due to this increase of renewable energy, a lot of research is going on to develop a distributed energy system and to integrate these energy resources to the grid. There has been also a lot of research in the field of more efficient use of power transfer. High temperature superconductors are being seen as the new technology that can do this. Research in the field of high temperature super conductors has also led researchers to work on superconducting generators, which generate energy more efficiently. This thesis is focused on the development of a superconducting synchronous generator, for wind turbine applications. A literature review is done where all existing superconducting generators are studied. It is found from the literature review that these generators have a serious flaw. It is that the cryocoolers are mounted on the rotor of these generators and thus, it is very difficult to manage and maintain these systems. It is thus proposed that if we could completely remove the field windings from the rotor of a generator, we could significantly reduce the maintenance cost of the superconducting generator. This is based on the realization that the present topology of using superconducting windings on the rotor, which is not very reliable nor a sustainable model. Thus a new topology for a synchronous generator utilizing a superconducting field winding is proposed. A mathematical derivation of the torque output of the HTS machine is presented and compared to a conventional synchronous machine. The derivation shows that this HTS machine could produce output torque about three times that of the synchronous machine in ideal conditions. A design topology was implemented for a 12 MW offshore wind turbine generator. The machine parameters for a single stage HTS WTG were calculated and a 2D Finite Element analysis is carried out for no load and rated load conditions. A similar PM machine was then designed and compared to the HTS machine. It is found using 2D finite element method that the HTS machine gives more torque by about 80% and thus gives promising result.
Identifier: FSU_2017SP_Mishra_fsu_0071N_13900 (IID)
Submitted Note: A Thesis submitted to the Department of Electrical and Computer Engineering in partial fulfillment of the in partial fulfillment of the Master of Science.
Degree Awarded: Spring Semester 2017.
Date of Defense: April 14, 2017.
Keywords: finite-element method (FEM), high-temperature superconducting (HTS), HTSC Machines, magnetic field, Synchronous Machines, wind power
Bibliography Note: Includes bibliographical references.
Advisory Committee: Sastry Pamidi, Professor Directing Thesis; Thomas Lipo, Committee Member; Simon Foo, Committee Member; Petru Andrei, Committee Member.
Subject(s): Electrical engineering
Persistent Link to This Record:
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Host Institution: FSU

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Mishra, S. (2017). Design and Analysis of a Novel High Temperature Superconducting Synchronous Machine. Retrieved from