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Constant-Parameter Interfacing of Induction Machine Models Considering Main Flux Saturation in EMTP-Type Programs

机译:EMTP型程序中考虑主通量饱和的感应电机模型的恒定参数接口

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摘要

The state-of-the-art magnetically linear voltage-behind-reactance (VBR) and phase-domain induction machine models for nodal-analysis-based electromagnetic transients programs (EMTP-type) offer an excellent combination of numerical stability, accuracy, and efficiency. However, incorporation of magnetic saturation in these models renders their interfacing circuits dependent on the operating segment of the piecewise-linear saturation characteristics. Consequently, refactorization of the network's conductance matrix is required during simulations, which reduces the numerical efficiency of the overall solution and limits the models' range of application. This paper presents a new VBR squirrel-cage induction machine model that includes main flux saturation and possesses a saturation-independent constant-parameter interfacing circuit. Case studies in PSCAD/EMTDC demonstrate that the proposed model offers similar numerical stability and accuracy to the state-of-the-art models, while considerably increasing simulation speed for practical multimachine systems.
机译:用于基于节点分析的电磁瞬变程序(EMTP型)的最新磁线性电抗法(VBR)和相域感应电机模型提供了数值稳定性,准确性和精确性的极佳组合效率。但是,在这些模型中并入磁饱和使得它们的接口电路取决于分段线性饱和特性的工作范围。因此,在仿真过程中需要对网络的电导矩阵进行重构,从而降低了整体解决方案的数值效率,并限制了模型的应用范围。本文提出了一种新的VBR鼠笼式感应电机模型,该模型包括主磁通饱和度并具有与饱和度无关的恒定参数接口电路。 PSCAD / EMTDC中的案例研究表明,所提出的模型提供了与最新模型类似的数值稳定性和准确性,同时大大提高了实用多机系统的仿真速度。

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