Abstract
The paper proposes a novel design arrangement to improve the torque performance of small rated single-phase brushless permanent magnet (PM) motors, especially as regards the starting performance. Unlike conventional techniques based on a suitable air gap shaping, such arrangement requires an auxiliary stator faced to one end of the main rotor PM, where some slots are made, generating an additional torque. A suitable design of the auxiliary PM and of the rotor PM slots enables higher starting torque than in asymmetric air-gap configurations, high stiffness around the standstill position and the mitigation of both the slot cogging torque and the load torque ripple. The additional cost due to the auxiliary PM is counterbalanced by the enhancements of both the starting performance and the torque ripple, prospecting a wider application of this class of motors to more demanding loads, such as pumps and portable devices.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
