Improved Speed Extension for Permanent Magnet Synchronous Generators by Means of Winding Reconfiguration †

Xuanyi Zhou, Jiajun Yang, Giovanni Migliazza, Sandro Guenter, Shuo Wang, Chris Gerada, Giampaolo Buticchi

Research output: Journal PublicationArticlepeer-review

1 Citation (Scopus)


With the increased development of electrical subsystems onboard modern transportation platforms, e.g., more electric aircrafts or more electric ships, the need for electric generation systems has increased. Since many motors require electric starting capability, the application of the starter/generator has been the focus of several studies. The peculiarity of such a system is its requirement for high torque at low speed (for the starting) as well as an extended operation range during the normal generation operations. This mismatch between maximum torque and speed comes at the expense of the power density of the electronic converter, which needs to be designed for the worst case situation and, due to the electric machine optimization, often requires field weakening operations. A new winding reconfiguration is proposed to achieve speed extension and provide more potentiality for high-speed applications. This work compares different power trains in terms of efficiency current stress for electric machines. Hardware-in-the-loop results are adopted to verify the practical implementation of the control systems.

Original languageEnglish
Article number899
Issue number2
Publication statusPublished - Jan 2023


  • more electric aircrafts
  • power electronics
  • starter/generator
  • winding reconfiguration

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Building and Construction
  • Fuel Technology
  • Engineering (miscellaneous)
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Control and Optimization
  • Electrical and Electronic Engineering


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