Characterization of the brushless, doubly-fed machine by magnetic field analysis

Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting Pub Date : 1990-10-07 DOI:10.1109/IAS.1990.152166

G. C. Alexander

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引用次数: 10

Abstract

The magnetic fields produced by the stator windings and induced via the rotor of a composite, cascade induction machine are investigated with simplified operating assumptions. The rotor used is the single-layer, modified cage developed by A. R. W. Broadway and L. Burbridge (see Proc. IEE, vol.117, p.1277-90, 1970). The input and control circuits share the same stator coils. The operation of the machine is dependent upon spatial harmonics of the stator and rotor conductor structures; therefore, the spatial harmonic contents of the excitation and induced fields are determined. A design formula for minimizing low-order, undesirable harmonics produced by the stator coils is presented. The form of the field harmonics and their direction of travel with respect to the rotor are established. Based upon the physical interactions of the rotor fields, a novel steady-state equivalent circuit with two excitation sources is established, along with the form of the requisite coupling factors. Contributions of the harmonic fields to the instantaneous and average torques are considered.<>

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通过磁场分析对无刷双馈电机进行表征

在简化的工作假设下，研究了复合串级感应电机的定子绕组产生的经转子感应的磁场。使用的转子是单层，改进笼由A. R. W. Broadway和L. Burbridge(见Proc. IEE, vol.117, p.1277- 90,1970)。输入电路和控制电路共用同一个定子线圈。机器的运行依赖于定子和转子导体结构的空间谐波;因此，确定了激发场和感应场的空间谐波含量。提出了一种使定子线圈产生的低次谐波最小化的设计公式。建立了磁场谐波的形式及其相对于转子的传播方向。基于转子磁场的物理相互作用，建立了一种新型的双励磁源稳态等效电路，并给出了所需耦合因子的形式。考虑了谐波场对瞬时力矩和平均力矩的贡献。

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Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting

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