Abstract
Permanent magnet (PM) machines with tooth-coil windings are designed and analyzed. We study how the slot wedge material affects the behaviour of losses when using tooth-coil windings. The losses of an interior permanent magnet rotor are studied over a wide speed range. A finite element analysis applying Cedrat's Flux2D is made. Motors of this size can have high permanent magnet eddy current losses, and therefore, segmented magnets are often preferred even though interior magnets and semi-magnetic wedge materials are used. The study shows that tooth-coil windings may benefit from using a semi-magnetic material as a wedge material as it decreases the rotor iron losses and, especially, losses in the permanent magnets. The study shows also that wedges with relative permeabilities higher than 3 would not benefit this traction motor design, because of high losses and low maximum torque. Computations are compared to measurements of a 110 kW prototype traction motor.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.