反电势负载单相全波整流电路无功功率的图解法  

Graphical Method for Reactive Power of Single-phase Full-wave Rectifier Circuit under Back EMF Load

作　　者：伍家驹[1] 周叶 冯上贤 陈亮亮 WU Jiaju;ZHOU Ye;FENG Shangxian;CHEN Liangliang(School of Information Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学信息工程学院,南昌330063

出　　处：《电源学报》2020年第3期142-150,共9页Journal of Power Supply

基　　金：国家自然科学基金资助项目(51167014,50967003,50467003,51967015)。

摘　　要：当整流电路所带负载为蓄电池时,其电路工作状况和无功功率计量均与纯阻负载有所不同。为此,提出一种单相相控整流电路带反电势负载的无功功率图解法,通过网侧电压、电流和对应磁通波形绘制三维Lissajous图形,并利用其投影三角形的面积来分析无功能量流。该方法可为单相相控整流电路的无功功率测算及功率补偿提供参考。分析结果表明,所提反电势负载的无功功率图解法简单直观,且有较好的实时性。When the load of a rectifier circuit is the armature of a battery,its circuit operation and reactive power measurement will be different from those in the case of pure resistance load.In this paper,a graphical method for a single-phase phase-controlled rectifier circuit under back EMF load is proposed.A three-dimensional Lissajous diagram is drawn based on the waveforms of voltage and current on the grid side as well as the corresponding flux.In addition,the area of the projection triangle is used to analyze the reactive power flow.This method can be used to provide reference in measuring the reactive power and compensating the power of the single-phase phase-controlled rectifier circuit.The analysis results show that the proposed graphical method for reactive power under back EMF load is simple and intuitive,and has better real-time performance.

关 键 词：相控整流 无功功率 反电势负载 图解法 

分 类 号：TM46[电气工程—电器]