Improved Magnetic Behavior Of Hemicycle PM Motor Via Stator Modification

• Main Authors: Mohd Jamil, Mohd Luqman, Tan, Cheng Kwang, Jidin, Auzani
• Format: Article
• Language: English
• Published: Institute Of Advanced Engineering And Science (IAES) 2020
• Online Access: http://eprints.utem.edu.my/id/eprint/24529/2/21032-42118-2-PB.PDF; http://eprints.utem.edu.my/id/eprint/24529/; http://ijece.iaescore.com/index.php/IJECE/article/view/21032/13964
• Institution: Universiti Teknikal Malaysia Melaka

This article investigates electromagnetic performance of a hemicycle PM motor by introducing a little modification on both ends of a hemicycle stator. Prior to the investigation, an analytical model for the hemicycle PM motor weight is derived analytically for the purpose of comparison with a conventional design. Both motor weights are then verified and the hemicycle motor is found to have lighter weight than the conventional design. By having a proper design modification, an optimum motor performance is achievable due to improved magnetic permeance. Two designs that have different arc angle; i) 180° (188.5 mm arc length) and ii) >180° (204.2 mm arc length) are the subjects of investigation. It is found that a hemicycle PM motor in which arc angle >180° results maximum torque average with the smallest torque ripple and smallest cogging torque