Developing an effective harmonic power flow tool requires fast and accurate calculations of the harmonics generated by the nonlinear elements. This paper presents a time-domain-based method for obtaining all steady-state characteristic and noncharacteristic harmonics generated by three-phase diode bridge rectifiers, under unbalanced and distorted supply. The developed model is generic and able to address both continuous- and discontinuous-conduction modes with a single formulation. By introducing a virtual resistance on the rectifier's DC side, the model is extended to accommodate any DC-side filter. Further, a unique analytical Jacobian matrix is developed to guarantee a quadratic convergence for the iterative part of the proposed method. The effectiveness of the proposed method for harmonic analysis is confirmed through a comparative evaluation with time-domain simulations using PSCAD/EMTDC.

中文翻译：

---

不平衡和失真电源下三相二极管桥式整流器的谐波分析

开发有效的谐波潮流工具需要对非线性元件产生的谐波进行快速准确的计算。本文提出了一种基于时域的方法，用于在不平衡和失真电源下获得三相二极管桥式整流器产生的所有稳态特征和非特征谐波。开发的模型是通用的，能够用单一公式处理连续和不连续传导模式。通过在整流器的直流侧引入虚拟电阻，该模型被扩展以适应任何直流侧滤波器。此外，开发了一个独特的解析雅可比矩阵，以保证所提出方法的迭代部分的二次收敛。