谐波抑制及降损节能研究

Study on Harmonic Suppression and Loss Reduction & Energy-saving

目前,谐波损耗的研究往往停留在定性分析上,且忽略导体的集肤效应。在研究集肤效应机理,实测谐波电流集肤效应仿真的基础上,分析了集肤效应的特性(谐波频率越高,集肤效应越严重;集肤效应越严重,导体阻抗越大),以及谐波损耗及其组成,指出:谐波损耗是系统总损耗的重要组成部分,谐波电流在导体上的集肤效应又加剧了导体发热,谐波抑制是节能研究的重要方向之一。

Up to now often been remained at the study of harmonic loss has stage of qualitative analysis and conductor＇s skin effect has been neglected as well during studying. Having made analysis of the characteristics of skin effect （ the higher harmonic frequency, the more serious skin effect, the higher conductor impedance in that case）, harmonic loss and its composition based on investigation of the mechanism of skin effect and measurement of simulated skin effect caused by harmonic current, a conclusion is drawn that harmonic loss is a primary part of total loss in system and the skin effect resulting from harmonic current intensifies generation of heat in conductors, therefore, harmonic suppression is one target for energy-saving.