Electrics and Electronic Engineering Research Centre

Electric Machines and Drives Research Group

Learn more about the work the Group undertakes.

The Electric Machines and Drives Research Group conducts research into:

  • Variable-speed electric drive systems
  • Electrical power generation plants for renewable energy sources
  • Power electronic converters for interfacing the variable-speed drives and generators

In addition to these key areas, the Group also focuses on:

• Modelling of electric machinery with more than three phases
• Using the principles of vector control and model predictive control to develop control algorithms for multiphase drives
• Pulse width modulation techniques for multiphase two-level and three-level inverters
• Supply and control of multiphase variable-speed drives in open-end winding configuration
• Development of multi-motor drive systems with reduced-switch-count inverter supply
• Solutions for the integrated on-board battery charging of electric vehicles. This work uses multiphase propulsion motors and multiphase power electronic converters.

Within the most recent research assessment (Research Excellence Framework 2014), 71% of the Group's submission was ranked as internationally excellent (3*). The published outputs of the seven academics who contributed to the submission were also graded as internationally excellent (3*).


For the past 15 years, the Group's main focus has been on multiphase (more than three phases) motor/generator systems. This research has the potential to improve electric ship propulsion, wind power based electricity generation, electric and hybrid electric vehicles.

Currently, the Group is working on an Engineering and Physical Science Research Council funded project called Vehicle Electric Systems Integration (VESI). As part of the project, researchers from 10 UK universities are conducting research into electric vehicles.

Within Liverpool John Moores University, the VESI project is led by Professor Emil Levi. Using the Group’s expertise in multiphase drives and multiphase power electronics, the aim of this segment is to develop novel solutions for integrated battery chargers for future electric vehicles, using electric motors and power electronic converters with more than three phases.

Considering that electric vehicles will eventually take a substantial share of the global automotive market, improving battery charging technology is important and this research has the potential to create considerable real-world impact.

In addition to the VESI project, the Electric Machines and Drives Group is also working with a Spanish company called Ingeteam. This collaborative project is looking into power generation based on multiphase generators and multiphase power electronic converters, which are suited to remote, large-scale offshore wind farms.

The Electric Machines and Drives Group also recently completed another collaborative project, which was funded by the Qatar National Research Fund. As part of this project, numerous multiphase multilevel supply topologies were developed for high-power multiphase systems.

Other partners the Group has been or currently is working with include: University of Malaya, University of Seville, Politecnico di Torino, University of Lille, University of Malaga, the Indian Institute of Science in Bangalore, University of Gdansk, University of Bologna, The University of Manchester and the University of Northumbria.

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Contact details

Contact the Electric Machines and Drives Research Group

If you’d like to ask a question or find out more information about this Group, please contact the team using the details below.

Contact: Emil Levi
Email: e.levi@ljmu.ac.uk
Call: 0151 231 2257


School of Engineering
Liverpool John Moores University
Byrom Street
L3 3AF