基于电力电子技术的大电流谐波发生方法  

High-current Harmonic Method Based on Power Electronic Technology

作　　者：涂水林[1] 费树岷[2] 

机构地区：[1]常熟理工学院,物理与电子工程学院,江苏常熟215500 [2]东南大学,自动化学院,江苏南京210096

出　　处：《电力电子技术》2010年第10期37-40,共4页Power Electronics

基　　金：江苏省高校自然科学研究计划项目(07KJD470004)~~

摘　　要：为满足万能式断路器谐波分析功能的测试需求,提出了一种基于电力电子技术的大电流谐波发生方法,使产生的3～31次各奇次谐波电流含有率大于1%。电力正弦激励源经电力电子技术斩波处理后激励次级短路的低压变压器,在次级回路产生的电流中含有丰富的谐波成分,但随着谐波次数的增加,高次谐波电流含有率不能达到设计要求。利用RLC二阶振荡回路对特定次谐波进行了重点补偿,有效提升了高次谐波的电流含有率。仿真与实际运行结果表明该方法可行。In order to satisfy the test requirements of air circuit breaker harmonic analysis functional,this paper puts forward a kind of method to generate harmonic currents based on power electronic technology,the harmonic ratio of 3～31 each odd harmonic current is more than 1%.The power sinusoidal excitation source chopped by power electron-ic technology drives low-voltage transformer which short-circuits in the secondary-side,the resulting loop current con-tains more harmonic component,but with the increase of orders of harmonics,the harmonic ratio of high-order har-monic cannot meet the design requirements.A second-order RLC oscillation loop is used to compensate the specific harmonic and promotes the harmonic ratio of high-order harmonics effectively.Simulation and practical results show that this method is feasible.

关 键 词：谐波发生 谐波补偿 斩波器 

分 类 号：TM714.3[电气工程—电力系统及自动化]