华电技术 ›› 2015, Vol. 37 ›› Issue (8): 26-29.

• 研究与开发 • 上一篇    下一篇

负荷率对整流参数的影响分析

  

  1. 宁夏大学物理电气信息学院,银川〓750021
  • 出版日期:2015-08-25

Analysis on influence of load rate on rectifier parameters

  1. School of Physics and Electric Information Science, Ningxia University, Yinchuan 750021, China
  • Published:2015-08-25

摘要:

摘要:目前我国高耗能行业大功率整流设备多采用六脉波整流技术,而六脉波整流技术在负荷率低的情况下功率因数低,产生电流谐波较大。对六脉波整流器和脉冲宽度调制(SVPWM)整流器在不同负荷率下的功率因数进行理论计算及谐波分析,并利用Matlab对其进行仿真,结合生产企业实际测量数据,证明了低负荷率下SVPWM整流器比六脉波整流器的功率因数高,对配电网产生的谐波污染小。

关键词: ">关键词:六脉波整流;脉冲宽度调制整流;负荷率;谐波畸变率;功率因数

Abstract:

Abstract:At presentthe technology of sixpulse rectifier are used in the most of highpower rectifying equipment in the high energy consuming industry in our country, but the sixpulse rectifier has low power factor and high current harmonic in condition of low load rate. The theoretical calculation of power factor and harmonic analysis were done for the sixpulse rectifier and the SVPWM rectifier under different load rate, and simulation of the two rectifiers was carried out by Matlab. Combining with the practical measured data of the power conversion devices
provided by the manufactures, it was verified that in low load rate condition, comparing with the six
pulse rectifier,the power factor of SVPWM rectifier is higher, and its harmonic pollution on powr grid is lower too.

Key words: Keywords:sixpulse rectifier, SVPWM rectifier, load rate, total harmonic distortion, power factor