电源学报2025，Vol.23Issue(2)：161-170,10.DOI:10.13234/j.issn.2095-2805.2025.2.161
两级式单相变频器超高次谐波发射机理研究
Study on Supraharmonics Emission Mechanism for Two-stage Single-phase Frequency Converter
李天楚 1容斌 2伍智鹏 1黄珏2
作者信息
- 1. 海南电网有限责任公司电力科学研究院,海口 570311||海南省电网理化分析重点实验室,海口 570311
- 2. 海南电网有限责任公司电能计量中心,海口 570311
- 折叠
摘要
Abstract
The converters,switching power supply and other power electronic equipment will inject a large quantity of supraharmonics into distribution network when they are connected to the grid on a large scale,resulting in the problem of power quality which becomes more and more serious.On this basis,the supraharmonics emission mechanism for an ordinary two-stage single-phase frequency converter is studied in depth.First,the Fourier series expression of harmonic current on the grid side is derived using the switching function method.Then,the ratio of supraharmonics is calculated,and its influencing factors are analyzed.Finally,the theoretical analysis is verified by simulation and measurement results.The research can provide a reference for the quantification,detection and monitoring of supraharmonics in distribution network.关键词
单相变频器/开关函数/超高次谐波/发射机理/谐波含有率Key words
Single-phase frequency converter/switching function/supraharmonics/emission mechanism/harmonic ratio分类
信息技术与安全科学引用本文复制引用
李天楚,容斌,伍智鹏,黄珏..两级式单相变频器超高次谐波发射机理研究[J].电源学报,2025,23(2):161-170,10.
