Analytical Derivation of Phase Current Waveform Eliminating Torque Ripple and Input Current Ripple of Switched Reluctance Motors under Magnetically Saturated Operation
Analytical Derivation of Phase Current Waveform Eliminating Torque Ripple and Input Current Ripple of Switched Reluctance Motors under Magnetically Saturated Operation
复制标题
开关磁阻电机磁饱和运行时消除转矩纹波和输入电流纹波的相电流波形解析推导
DOI：
10.1109/ecce.2019.8912726
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
E. Hiraki
中科院分区：
文献类型：
--
作者：
T. Kusumi;Kosuke Kobayashi;K. Umetani;E. Hiraki
开关磁阻电机（SRMs）由于其简单的机械结构而不含永磁体，因此具有优异的成本效益和高热容性。然而，由于其较大的输入电流脉动和转矩脉动，srm在运载火箭推进中的应用往往受到阻碍。为了缓解这一问题，之前的研究提出了一种相电流波形，该波形在磁饱和以下的磁化强度下消除了这两种波纹。然而，先前的技术仍然存在较大的转矩和大输出转矩时的输入电流波动，这容易导致磁饱和。本文提出了一种改进的相电流波形，即使在大输出转矩时也能消除这些波纹。基于SRM的非线性磁模型，解析导出了该波形。实验成功验证了所提出的相电流波形，表明了所提出的技术在运载火箭推进中应用的有效性。
Switched reluctance motors (SRMs) is beneficial in excellent cost-effectiveness and high thermal tolerance owing to their simple mechanical construction free from permanent magnets. Nevertheless, application of SRMs to vehicular propulsion is often hindered by their comparatively large input current ripple and torque ripple. For mitigating the problem, the previous study has proposed a phase current waveform that eliminates both of these ripples under the magnetization below the magnetic saturation. However, this previous technique still suffers from significant torque and input current ripples at large output torque, which tends to cause the magnetic saturation. This paper proposes an improved phase current waveform that eliminates these ripples even at large output torque. This waveform was derived analytically based on the nonlinear magnetic model of the SRM. The proposed phase current waveform was successfully verified by the experiment, suggesting the usefulness of the proposed technique for applying SRMs to vehicular propulsion.