学术论文

      基于三阶广义积分的改进型单相谐波电流检测方法

      An improved harmonic current detection algorithm based on third-order general-integrator

      摘要:
      随着单相分布式可再生能源并网系统的普及与发展,单相电力有源滤波器及采取有源阻尼的单相逆变器广泛应用于单相电网系统中,该类设备都需要对单相电流谐波进行快速与准确的检测.为解决单相谐波电流快速检测的问题,文中依据瞬时无功功率理论,基于广义二阶积分,将三相谐波电流检测的方法推广至单相系统,并针对单相电流中直流分量对谐波电流检测的影响,提出了一种基于三阶广义积分的改进型单相谐波电流检测方法.最后,基于MATLAB/Simulink平台对所提的谐波检测算法进行了仿真分析,并搭建小功率低压单相有源滤波器实验平台进行了实验,验证了该新型单相谐波检测算法的正确性与有效性.
      Abstract:
      With the popularity and development of single-phase distributed renewable energy grid-connected systems, it is demand to detect the single-phase current harmonics for single-phase power active filter or single-phase active damping inverter fast and accurately.In order to solve the problems of detecting harmonic current, a three phase harmonic current detection method which based on instantaneous reactive power theory and second order generalized integrator is extended to single-phase system.Aiming at eliminating direct current offset, a new harmonic detecting algorithms based on the third-order general-integrator is used.MATLAB/Simulink simulation model and experiment platform for single-phase active power filter prototype are developed to validate the availability of the proposed harmonic current detection algorithm.
      作者: 刘斌 [1] 卢日昌 [1] 李欣 [1] 宋绍剑 [1] 贺德强 [2]
      Author: LIU Bin [1] LU Ri-chang [1] LI Xin [1] SONG Shao-jian [1] HE De-qiang [2]
      作者单位: 广西大学电气工程学院,广西南宁,530004 广西大学机械工程学院,广西南宁,530004
      年,卷(期): 2017, 42(2)
      分类号: TM935
      在线出版日期: 2017年5月16日
      基金项目: 广西自然科学基金资助项目,广西壮族自治区中青年教师提升计划