谐波平衡应用于具有运动和电路耦合的二维非线性有限元磁模型

IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Elia Scolaro, Luigi Alberti, Ruth V. Sabariego, Johan Gyselinck
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引用次数: 0

摘要

在这项工作中,谐波平衡方法被应用于一个与非线性电路耦合的具有运动的二维非线性有限元磁模型。案例研究包括一台连接到六脉冲全波二极管桥式整流器的六极三相表面安装永磁发电机。模拟在两种运行情况下以固定的发电机速度进行:开路直流母线和负载电阻。针对所研究的模型,深入讨论了时间步进和谐波平衡方法,以及相关的实施细节。谐波平衡结果与基准时间步进模拟的电压和电流波形进行了比较,并逐步扩大了谐波频谱。同时还报告了两种方法的计算成本。与时间步进基准结果相比,模拟精度令人满意:总谐波失真和全局均方根值的相对误差分别低于 3% 和 1%。不过,由于所选案例研究的初始瞬态相对较短,时间步进方法优于谐波平衡方法。要发挥谐波平衡技术的潜力,还需要进一步改进实际应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Harmonic balance applied to a 2D nonlinear finite-element magnetic model with motion and circuit coupling

In this work, the harmonic balance approach is applied to a 2D nonlinear finite-element magnetic model with motion, coupled to a nonlinear circuit. The case study comprises a six-pole three-phase surface-mounted permanent magnet generator connected to a six-pulse full-wave diode bridge rectifier. Simulations are performed at fixed generator speed in two operating cases: with an open-circuit DC bus and supplying a load resistance. Both time stepping and harmonic balance approaches are deeply discussed focusing on the model under study, along with relevant implementation details. Harmonic balance results are compared with benchmark time stepping simulations in terms of voltage and current waveforms, progressively expanding the harmonic spectrum. The computational cost of the two approaches is reported as well. Simulation accuracy is satisfying with regard to time stepping benchmark results: relative errors on total harmonic distortion and global root-mean-square values are lower than 3% and 1%, respectively. However, the time stepping approach outperforms the harmonic balance one, due to the relatively short initial transient of the chosen case study. Further improvements on practical implementation are needed to exploit the potentialities of harmonic balance technique.

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来源期刊
CiteScore
4.60
自引率
6.20%
发文量
101
审稿时长
>12 weeks
期刊介绍: Prediction through modelling forms the basis of engineering design. The computational power at the fingertips of the professional engineer is increasing enormously and techniques for computer simulation are changing rapidly. Engineers need models which relate to their design area and which are adaptable to new design concepts. They also need efficient and friendly ways of presenting, viewing and transmitting the data associated with their models. The International Journal of Numerical Modelling: Electronic Networks, Devices and Fields provides a communication vehicle for numerical modelling methods and data preparation methods associated with electrical and electronic circuits and fields. It concentrates on numerical modelling rather than abstract numerical mathematics. Contributions on numerical modelling will cover the entire subject of electrical and electronic engineering. They will range from electrical distribution networks to integrated circuits on VLSI design, and from static electric and magnetic fields through microwaves to optical design. They will also include the use of electrical networks as a modelling medium.
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