横向磁通永磁同步电机非线性动态等效磁网络模型分析

Nonlinear Dynamic Equivalent Magnetic Network Model Analysis of Transverse Flux Permanent Magnet Synchronous Motor

为了缩减电机设计周期,该文针对横向磁通永磁电机提出一种非线性动态等效磁网络模型。该模型引入电机饱和深度系数来反映电机不同饱和程度对导磁材料性能的影响。文中着重分析定转子齿和气隙位置磁通管的划分和相应磁阻的计算。在电机转动过程中,根据定转子的相对位置,把电机的一对极范围划分为8个区域,每个区域内的等效磁阻分布均相同。并且用统一的拓扑表示这8个区域的等效磁网络,从而将动态过程转化为静态拓扑。在求得电机磁链的基础上,对电机的电感、空载反电势进行分析计算。最后通过有限元方法和实验,验证该模型的有效性。

To reduce the cycle of motor design, a nonlinear dynamic equivalent magnetic network(NDEMN) model for a new type of transverse flux permanent magnet motor(TFPMM) was proposed. The model took into account the influence of the different saturation degree of the motor on the performance of the magnetic material, so the saturation depth coefficient of the motor was introduced. The division of the fixed rotor tooth and the gas gap position flux tube and the calculation of the corresponding magneto resistance were emphatically analyzed. According to the relative position of stator and rotor, the motor’s one pole area was divided into 8 regions, and the equivalent reluctance distribution in each region was the same.And a unified topology was used to represent the equivalent magnetic network of the 8 regions, so that the dynamic process was transformed into a static topology. On the basis of the magnetic chain of the motor, the inductance and the back EMF of the motor were calculated. Finally, the validity of the model was verified by the finite element analysis(FEA) method and the experiment.