关键词: 永磁同步电机, Halbach 阵列, 发卡绕组, 多物理场仿真

Abstract: Multi-physics field optimization design was carried out for a high efficiency and high power density permanent magnet synchronous motor ( PMSM) with a rated power of 50 kW and a rated speed of 2 050 r / min. The design and simulation analysis encompass multi-physics field including electromagnetic field, temperature field, and stress field. To further enhance the power density, a hairpin winding was chosen instead of the traditional round wire winding. In order to
improve the sinusoidal nature of the back electromotive force, a multi-segment Halbach array magnetization method was employed instead of the conventional radial magnetization. The design process and electromagnetic parameter optimization procedure for high power density motors were presented. The results of the multi-physics field simulations demonstrate that the designed motor simultaneously meets the electromagnetic performance criteria as well as the temperature rise and stress criteria.