Scaling studies of high speed high temperature superconducting generator

M. Lokhandwalla, K. S. Haran, J. P. Alexander

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The sizing of a high speed, high power density, high temperature superconducting (HTS) electric generator is discussed here. Previous work discussed the advantages of a homopolar inductor alternator (HIA) machine topology for the high speed, high power density application i.e., the enhanced magneto-motive force (MMF) capability of the HTS coil combined with high rotor tip velocity and a liquid cooled air gap wound armature. In this work we present the sizing/scaling of a family of machines based on this topology. The goal of this exercise is to obtain power entitlement and power density of the machine for a given physical size within mechanical, thermal and electrical constraints. A prototype machine was designed and tested [1] validating the assumptions used in this sizing/scaling model. Effects of some key design changes are also discussed. Power densities in the range of 4.2-8.8 kW/kg can be obtained depending on the rotor material, and HTS wire, for 3-5MW rating. Comparison is made with high speed permanent magnet (PM) machines indicating a significant weight reduction at least 500 kg for a 5MW machine or 1000 kg for a 15.6MW machine.

Original languageEnglish (US)
Title of host publicationProceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012
Pages751-756
Number of pages6
DOIs
StatePublished - 2012
Externally publishedYes
Event2012 20th International Conference on Electrical Machines, ICEM 2012 - Marseille, France
Duration: Sep 2 2012Sep 5 2012

Publication series

NameProceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012

Other

Other2012 20th International Conference on Electrical Machines, ICEM 2012
Country/TerritoryFrance
CityMarseille
Period9/2/129/5/12

Keywords

  • high-temperature superconductors
  • homopolar generators
  • inductor alternators
  • superconducting rotating machines

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Scaling studies of high speed high temperature superconducting generator'. Together they form a unique fingerprint.

Cite this