自主分散永磁同步电机数学模型及其故障电流补偿研究

Jizhu Liu, S. Hao, S. Wang, Peng Zhang, Tao Chen
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引用次数: 0

摘要

高速、大转矩、大功率的永磁同步电动机通常采用集中式大功率,这增加了变压器的容量,降低了系统的可靠性,因此本文提出了一种基于自治分散架构的方案,其中定子绕组采用分布式网络结构,绕组的每个线圈由单独的驱动控制器控制,以提高驱动系统的容错性。推导出了PMSM矢量坐标变换公式、电机自感和互感公式以及分散结构下电机电压和电磁转矩模型,并以8极12槽PMSM为例,建立了a相失效前后电机瞬时电磁转矩恒定的电流补偿数学模型。最后通过有限元仿真分析和具体实验验证了现有补偿模型的正确性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Research on mathematical model of autonomous decentralized PMSM and its current compensation during failure
Permanent magnetic synchronous motor (PMSM) with high speed, large torque and high power usually employs centralized high power, which increases the capacity of the transformer, and reduces the reliability of the system, so the paper proposes a scheme based on an autonomous decentralized architecture, in which the stator winding uses distributed network structure, each coil of the winding is controlled by a separate driving controller, to improve the fault tolerance of the driving system. The paper deduces the formula for PMSM vector coordinate transformation, and the formula for motor self-inductance and mutual-inductance, as well as the motor voltage and electromagnetic torque model in decentralized architecture, taking a 8-pole 12-slot PMSM as example, establishes the mathematical model of current compensation with constant motor instantaneous electromagnetic torque before and after one or all coils of phase A are failed, finally tests the correctness of the current compensation model by using finite element simulating analysis and concrete experiments.
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