典型单相非线性负荷的精确谐波模型及谐波衰减特性.pdfVIP

第34 卷 第19 期 中 国 电 机 工 程 学 报 Vol.34 No.19 Jul.5, 2014 3210 2014 年7 月5 日 Proceedings of the CSEE ©2014 Chin.Soc.for Elec.Eng. DOI ：10.13334/j.0258-8013.pcsee.2014.19.022 文章编号：0258-8013 (2014) 19-3210-10 中图分类号：TM 72 典型单相非线性负荷的精确谐波模型 及其谐波衰减特性 雍静，肖兵 (输配电装备及系统安全与新技术国家重点实验室(重庆大学) ，重庆市 沙坪坝区 400030) Harmonic Modeling and Investigation on Harmonic Attenuation Effect for Typical Single-phase Nonlinear Loads YONG Jing, XIAO Bing (State Key Laboratory of Power Transmission Equipment System Security and New Technology (Chongqing University), Shapingba District, Chongqing 400030, China) ABSTRACT: This paper developed a precise frequency- 荷电流谐波特性的影响，揭示了其谐波衰减效应发生的原 domain harmonic model of single-phase nonlinear loads, which 因，并在一定程度上实现了对非线性负荷谐波衰减效应的定 use uncontrolled rectifiers with DC-smoothing capacitors as 量分析。 their power supply. This model was validated by simulations 关键词：谐波；非线性负荷；衰减效应；电路导通角衰减系 and measurements, so it could be used to analyze the harmonic attenuation effect of aforementioned nonlinear loads. 数；电压峰值衰减系数 Model-based analyses of these loads were performed, and two 0 引言 new indices, namely conduction angle attenuation factor (γ af) and peak voltage attenuation factor (Paf), were proposed for 低压配电系统中，以桥式整流电容滤波电路为 characterizing the harmonic attenuation effect. Good 电源的非线性负荷日益增多，如个人电脑(PC)、紧 correlation between these indices and total attenuation factor 凑型荧光灯(CFL)、液晶显示器(LCD)等。这些负荷 (FAFtotal) of harmonic current was verified by simu