Read our white paper on ‘Accounting for AC Winding Losses in the Electric Machine Design Process’

AC Losses White Paper


The efficiency and power output capability of an electric machine is defined by the losses generated during the machine operation. Losses that are generated in a machine cause heating, which fundamentally limits performance and defines the maximum torque and power capability of a design. Large AC winding losses are often discovered at a late stage in the development process and this can result in significant additional costs, delays and a failure to meet the design requirements. Taking machine losses into account early on in the design process is, therefore, crucial to ensure that the design requirements are met.

In this paper, we compare the advantages and disadvantages of different approaches to modelling AC losses during the design process—including analytical calculations and finite element analysis (FEA)—and discuss a ‘hybrid’ approach to calculating frequency-dependent winding losses that combines the speed of analytical methods with the accuracy of FEA. Using the Motor-CAD EMag module, we analyse the AC losses of three electric machine types using the Full FEA and Hybrid FEA methods and compare the speed and accuracy of both approaches.

What will you learn?

  • Why it is important to calculate AC losses early in the design process
  • The advantages and disadvantages of different approaches to calculating AC losses
  • How different approaches to calculating AC losses compare using the Motor-CAD EMag module.

Click here to download the white paper.

If you have any questions about this white paper or want to speak to a member of our team about the services MDL provides, please get in touch with us through our contact form.

MDL named an official sponsor of EV Momentum, Berlin

MDL named an official sponsor of EV Momentum, Berlin

EV Momentum MDL is pleased to announce that we will be sponsoring EV Momentum, an exciting new summit dedicated to addressing the impact of EV on the automotive supply chain and the challenges and opportunities of a fast-growing e-mobility industry. The conference, which takes place on the 19th – 21st June 2018 and is co-located with CWIEME Berlin, will feature presentations from leading voices in the industry, including MDL Chief Executive Officer, Dr James Goss.

For more information on the event and to register, please visit the EV Momentum website.

MDL Torque Issue 35: February 2018

MDL Torque Issue 35: February 2018

Take a look at our newsletter to get all the latest news and updates from Motor Design Ltd., including:

  • News about our latest software release, Motor-CAD version 11
  • Our new video tutorial to guide users through some of the main features of Motor-CAD
  • An award for the ELETAD project and other research news.

To view this newsletter, please click here.


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