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Harmonic Analysis Of Ac/dc Systems Based On Phase-domain Multi-port Network Approach

机译:基于相域多端口网络方法的交直流系统谐波分析

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摘要

This paper describes a phase-domain frequency domain technique to the harmonic analysis of a three-phase AC/DC system. The methodology is based on the harmonic multi-port network concept, expressed in terms of an ABCD parameter matrix which links voltage and current harmonics of different orders on both sides of the converter. Since the commutation angles are unknown, the harmonic interactions are computed by a sequential solution of the AC/DC system state variables, related by the ABCD matrix, and the updating of the commutation periods. A set of analytical equations has been derived to compute commutation times taking place in the converter. Test results are presented which demonstrate the effectiveness of the proposed methodology to assess harmonic interactions on both balanced and unbalanced operating conditions. The results are validated to those obtained by a time domain simulation.
机译:本文介绍了一种相域频域技术,用于三相AC / DC系统的谐波分析。该方法基于谐波多端口网络概念,用ABCD参数矩阵表示,该矩阵在转换器的两侧链接了不同阶次的电压和电流谐波。由于换向角是未知的,因此谐波交互作用是通过AC / DC系统状态变量的顺序解(与ABCD矩阵相关)以及换向周期的更新来计算的。导出了一组解析方程,以计算在转换器中发生的换向时间。给出了测试结果,这些结果证明了所提出方法在平衡和不平衡工作条件下评估谐波相互作用的有效性。将结果验证为通过时域仿真获得的结果。

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