基于重复控制的单相整流驱动系统高功率因数实现方法  

Achievement Method of High Power Factor of Single Phase Rectifier Drive System Based on Repetitive Control

作　　者：李研达[1] 苗风东[1] 高相铭[1] 

机构地区：[1]安阳师范学院物理与电气工程学院,河南安阳455000

出　　处：《电力电容器与无功补偿》2017年第3期141-146,共6页Power Capacitor & Reactive Power Compensation

基　　金：河南省重点科技攻关计划项目(152102210294);河南省教育厅自然科学研究项目(14B470004)

摘　　要：针对传统单相不控整流供电的调速系统存在的网侧功率因数低、畸变严重以及电机转矩脉动问题,本文提出一种基础重复控制的永磁同步电机(PMSM)驱动系统高功率因数实现方法,该方法拟实现以下目标:1)调节PMSM转速;2)优化网侧电流品质;3)提高网侧功率因数。分析了母线电压波动有效值与网侧功率因数之间的关系,得出降低母线支撑电容与网侧电流的内在联系,进而推导出整流侧功率、支撑电容功率和逆变侧功率的关系函数。此外,为了满足逆变侧功率随网侧电压二倍频周期性波动,引入重复控制器实现对正弦周期性内环q轴电流的高精度跟踪。最后,基于双15 kW的PMSM对拖调速系统实验平台进行实验验证与分析。结果表明,所提方法可实现驱动系统的三大控制目标,同时降低母线支撑电容可降低驱动系统成本和压缩体积。In view of such problem as low power factor, serious distortion and torque pulsation of motor in the speed control system of for which the power is supplied by the traditional single phase uncontrolled rectifier,in this paper a kind of high power achievement method of permanent magnetic synchronous motor （PMSM） drive system based on repetitive control is proposed to achieve following objective：1）adjustment of PMSM revolution;2）current quality optimization at network side;3）power factor improv-ement of the network side,thus deducts the relation function of rectifier side power,support capacitive power and inverter side power. In addition,for meeting double frequency periodical fluctuation of the power at inverter side with voltage of network side,the repetitive controller is introduced to achieve high accuracy tracking of the sinusoidal periodic ring q-axis current. Finally,Experiment verification and analysis for the test platform of drag speed regulation system based on dual 15 kW PMSM are performed. It is shown by the result that the proposed method can achieve three control objectives of the drive system and,at the same time,reduce system cost and compress size by way of reducing bus support capacitor.

关 键 词：永磁同步电机 功率匹配控制 高功率因数 重复控制 

分 类 号：TM341[电气工程—电机] TM714.1