100kVA三相四线有源电力滤波器的研制  

Development of a 100kVA three-phase four-leg shunt active power filter

作　　者：胡楷[1] 潘孟春[1] 于晶荣 

机构地区：[1]国防科技大学机电工程与自动化学院,湖南长沙410073 [2]长沙威胜能源产业技术有限公司研发部,湖南长沙410013

出　　处：《电工电能新技术》2010年第1期30-34,共5页Advanced Technology of Electrical Engineering and Energy

摘　　要：三相四线配电网的谐波电流、三相不平衡和中性线电流过大问题比较普遍,三相四线SAPF是解决这些问题的理想方案。基于改进的FBD法的三相四线SAPF指令电流检测算法,能够将负载电流分解成基波各相序和单次谐波电流。应用该算法设计并实现了基于4桥臂主电路结构,容量为100kVA(输出电流150A)的SAPF样机,搭建了大容量实验环境,对该装置性能进行了实验验证并给出了结果。实验结果证明装置原理的可行性,对谐波电流、负序电流和零序电流补偿效果非常明显。Three-phase four-wire distribution electrical system with power quality problems such as harmonic, negative sequence, neutral current, occupied a majority proportion in the grid. Three-phase four-leg shunt active power filter （SAPF） provides a perfect solution for power quality problems in three-phase four-wire electrical system. Authors of this paper investigate the FBD theory and propose a reference current deteetiong arithmetic by improving FBD method for three-phase four-leg SAPF. The arithmetic is able to divide the load current to fundamental current of different sequences and harmonic current of different frequencies before compensating individual current component. A SAPF rating at 150A output current capacity is designed and implemented employing the proposed arithmetic and four-leg main circuit. The experimental results to compensate different current components are provided. The results show that the equipment can dramatically improve the source current shape by compensating the negative, positive and zero sequence of load current.

关 键 词：三相四线 并联有源电力滤波器 FBD法 四桥臂主电路 

分 类 号：TM77[电气工程—电力系统及自动化]