Thứ tư, 01/10/2025 | 19:00
ABSTRACT In this paper, the electromagnetic properties of external rotor permanent magnet motors are analyzed and modeled. The magnetic flux density at the magnet's working point has a significant effect when interacting directly with the armature current to produce torque. It is analyzed according to magnetic material properties and number of conductors in the motor stator windings. Both factors are required to accurately predict the magnetic flux and moment distribution when demagnetized. The author focuses on analyzing the magnetic flux density at the working point to limit the risk of complete demagnetization leading to motor damage. Finite element analysis (FEM) method is used to verify the analytical model. The obtained results are a key factor in optimal magnet design. Keywords: Brushless direct current motor, the magnetic flux density at the magnet's working point, conductor,hard magnetic materials,demagnetization. |
Đến cuối tháng 9/2025, Thái Nguyên cung cấp 2.142 thủ tục hành chính, trong đó 934 thủ tục đủ điều kiện dịch vụ công trực tuyến toàn trình, 275 thủ tục đã cung cấp toàn trình và hơn 1.700 thủ tục trực tuyến một phần.
30/09/2025