Fully-integrated high-speed IM for improving high-power marine engines

David Gerada, Zeyuan Xu, Xuzhen Huang, Chris Gerada

Research output: Journal PublicationArticlepeer-review

5 Citations (Scopus)


In this study, electrical machine technologies are compared comprehensively for a hybrid turbocharger used with a high-power marine engine. It is required for the machine to operate in a thermally aggressive environment, with turbine exhaust temperatures in excess of 600°C. Furthermore, it is required to both generate from the extra exhaust energy (turbo-compounding) at high-engine loads as well as a motor for low-engine loads during slow steaming. The application investigated translates to a machine featuring both high-power (150 kW) and high speeds (25-50 krpm), together with a considerable constant power-speed region. In this study, induction machines (IM), permanent magnet machines and switched reluctance machines are compared taking into account a number of aspects including the thermal performance, torque ripple, converter volt-ampere rating, and cost. In light of the technical and market requirements, the IM featuring new materials is prototyped and tested for the application in a representative environment.

Original languageEnglish
Pages (from-to)148-153
Number of pages6
JournalIET Electric Power Applications
Issue number2
Publication statusPublished - 1 Feb 2019

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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