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A Brushless Electric Motor with a Transverse Magnetic Flux and Disk Rotor

机译：具有横向磁通量和盘形转子的无刷电动机

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摘要

Brushless permanent magnet machines (BPMMs) have a greater efficiency and smaller overall dimensions than do other types of machines and are widely used in electric drives for various purposes. Two types of BPMMs are used in practice: BPMMs with a classical double-layer-distributed stator winding and BPMMs with a toothed-step stator winding. There exists another type of BPMM with a transverse magnetic flux (transverse flux motors, TFMs) which is being actively studied. In TFM electric motors, the magnetic lines of fluxes of the poles of rotor end perpendicular to the direction of rotor rotation. Stator windings in these machines are fabricated as rings coaxial with rotor, and the magnetic circuit of stator consists of separate fragments. Specialists assert electric TFMs have a higher specific power—the ratio between the output power and the mass of the machine—than the electric motors of other type. They are of interest, first and foremost, for electric drives without reducing gears. In most TFM, only a half of the poles of rotor are magnetically connected with circular phases of stator. In this work, the TFM design with disk rotor is described, in which the magnetic flux of all poles of rotor is coupled to the circular phases of stator. The stator magnetic circuit in this machine consists of P-like elements, and alternation of polarity of these elements is provided due to the change of their position. As a result, the magnetic flux coupled to the circular phase increases doubles, as do the machine torque and power. Some results of modeling of a three-phase electric motor are presented. The results were obtained using the Ansys Maxwell computer code, including a graph of the change of torque on the shaft of a machine under rotation of the rotor under conditions of sinusoidal currents in phases.
机译：无刷永磁电机（BPMM）与其他类型的电机相比，具有更高的效率和更小的尺寸，并且广泛用于各种用途的电力驱动器中。实际上，有两种类型的BPMM：带有经典双层分布定子绕组的BPMM和带有齿形定子绕组的BPMM。正在积极研究另一种类型的具有横向磁通的BPMM（横向磁通电动机，TFM）。在TFM电动机中，转子磁极的磁通量的磁力线垂直于转子旋转方向而终止。这些机器中的定子绕组被制成与转子同轴的环，并且定子的磁路由单独的碎片组成。专家断言，电动TFM具有比其他类型的电动机更高的比功率（输出功率与机器质量之比）。最重要的是，它们对于不减速的电动驱动器很感兴趣。在大多数TFM中，仅转子的一半磁极与定子的圆形相位磁连接。在这项工作中，描述了具有圆盘转子的TFM设计，其中转子所有极的磁通量耦合到定子的圆形相位。该机器中的定子磁路由P型元件组成，由于位置的变化，这些元件的极性交替变化。结果，耦合到圆形相位的磁通量增加了一倍，机器转矩和功率也增加了一倍。给出了三相电动机建模的一些结果。结果是使用Ansys Maxwell计算机代码获得的，其中包括在相位为正弦电流的条件下，随着转子的旋转，电机轴上的转矩变化的曲线图。

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