• 首页|关于本刊|编委阵容|投稿指南|审稿指南|订阅指南|征稿启事|诚邀专家|学术道德|English
  • E-mail:
  • 密 码: 
  •    
  • 用户名:
  • 密 码: 
  •    
最新录用 更多>>
周立,张静.一种改进型一阶广义积分锁频环的研究[J].电源学报,2017,15(6):62-67,74
一种改进型一阶广义积分锁频环的研究
Research on An Improved Frequency-locked Loop Based on First Order Generalized Integrator
投稿时间:2017-05-23  修订日期:2017-09-29
DOI:10.13234/j.issn.2095-2805.2017.6.62
中文关键词:  光伏逆变器  一阶广义积分器  锁频环  谐波  滑动平均滤波器
英文关键词:photovoltaic inverter  first order generalized integrator  frequency-locked loop  harmonics  moving average filter
基金项目:国家自然科学基金资助项目(51177067)
作者单位E-mail
周立 辽宁工程技术大学电气与控制工程学院, 葫芦岛 125105  
张静 辽宁工程技术大学电气与控制工程学院, 葫芦岛 125105 1015148364@qq.com 
摘要点击次数: 702
全文下载次数: 944
中文摘要:
      稳定可靠的并网控制策略是提高光伏逆变器故障穿越能力的关键,对锁相技术的研究尤为重要。提出一种改进型一阶广义积分锁频环FOGI-FLL(frequency-locked loop based on first order generalized integrator)技术,首先利用滑动平均滤波器MAF(moving average filter)滤除电网电压中的谐波分量,消除谐波对FOGI-FLL的影响,再利用FOGI-FLL进行基波正、负序分离。仿真结果表明:在发生谐波畸变的电网中,所提出的方法能够在电网电压不平衡、频率突变和相位跳变的故障情况下,准确提取出电网电压的基波正、负序分量,并快速跟踪电网频率和相位。
英文摘要:
      Stable and reliable grid connected control strategy is the key to improve the fault ride through capability of photovoltaic inverter, which is especially important for the research of phase lock technique. This paper proposes an improved frequency-locked loop based on first order generalized integrator(FOGI-FLL). First through moving average filter(MAF), it can eliminate the harmonics and the impact of harmonics effectively in grid voltage. Then, the positive and negative sequence voltage are separated by FOGI-FLL. Simulation results show that the proposed method can accurately extract the fundamental positive and negative sequence components of the grid voltage, and rapidly track the frequency and phase of the grid in the harmonic distortion grid, when the grid voltage is unbalanced, the frequency changes and the phase jump occurs.
查看全文  查看/发表评论  下载PDF阅读器
关闭