发表机构
Universidad Politécnica de Madrid; University of Wisconsin（马德里理工大学; 威斯康星大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
针对现有不平衡三相无源元件序域模型未考虑零序与正负序相互作用的问题，本研究解析推导并经实验验证了其等效dq序域模型，为电力变流器控制器设计提供了新支撑。
AI 中文摘要
三相无源阻抗的等效dq0模型广泛应用于同步坐标系下三相逆变器与整流器控制器的设计，但这类等效模型假设各相阻抗相同，该假设并非总能成立。各相阻抗不同会导致dq0分量中产生二次谐波，削弱dq0变换的优势。为避免此类场景下的二次谐波，可采用Fortescue定理将任意不对称三相信号集表示为三个对称分量的线性组合。现有文献中，仅有少量研究尝试推导不平衡三相无源元件的序域等效模型，且均未考虑零序与正、负序之间的相互作用。本研究通过解析推导与直观图形化方法，推导了不平衡三相无源元件的等效dq序域模型，并通过实验结果验证了所提模型的有效性。
英文摘要
Equivalent dq0 models of three-phase passive impedances are widely used for the design of three-phase inverter and rectifier controllers in the synchronous frame. However, these equivalent models assume that the impedance in each phase are the same, which is not always applicable. The fact that the impedance in each phase is different, generates second order harmonic content in the dq0 components, which hinders the advantages of the dq0 transformation. To avoid the second harmonic in these scenarios, it is possible to use the Fortescue's theorem to represent any asymmetrical set of three-phase signals as a linear combination of three symmetrical sequences. In the literature, only a few works have attempted to derive the equivalent model of unbalanced three-phase passive elements in the sequence domain, and none is able to account for the interaction between the zero sequence and the positive and negative sequences. This work presents the derivation of the equivalent dq sequence-domain model of unbalanced three-phase passive elements both analytically and with an intuitive graphical approach. Experimental results are shown to validate the proposed models.
Comments8 pages, 7 figures, 2023 IEEE Applied Power Electronics Conference and Exposition (APEC)
DOI：10.1109/APEC43580.2023.10131365
