基于频域分析和低通滤波的光伏并网逆变器谐振抑制研究
기우빈역분석화저통려파적광복병망역변기해진억제연구
Supprrssion of harmonic rrsonancr for grid-connrctrd PV invrrtrr basrd on frrqurncy domain analysis and low-pass filtrr control
  • 万方数据
    燕山大学学报 연산대학학보
    Journal of Yanshan University
    2015年 4期 347-351 ,共5页

    宣文华%牛益国%谢小英%田鹏%贾清泉

    선문화%우익국%사소영%전붕%가청천

    光伏并网%LCL型滤波器%谐波谐振%低通滤波控制 光伏併網%LCL型濾波器%諧波諧振%低通濾波控製
    광복병망%LCL형려파기%해파해진%저통려파공제
    grid-connected PV%LCL filter%harmonic resonance%low-pass filter control
    为了抑制光伏并网系统中的谐波谐振,本文提出了一种逆变器低通滤波控制策略. 首先分析了LCL型光伏并网逆变器的频域特性,其次建立了单个光伏和多个光伏并网的诺顿等效模型,最后研究了不同并联台数情况下逆变器谐波谐振特性和多并网逆变器相互间的耦合关系. 通过SIMULINK仿真验证,证明了该方法对谐波谐振具有良好的抑制效果.
    위료억제광복병망계통중적해파해진,본문제출료일충역변기저통려파공제책략. 수선분석료LCL형광복병망역변기적빈역특성,기차건립료단개광복화다개광복병망적낙돈등효모형,최후연구료불동병련태수정황하역변기해파해진특성화다병망역변기상호간적우합관계. 통과SIMULINK방진험증,증명료해방법대해파해진구유량호적억제효과.
    In order to suppress the harmonic resonance caused by grid-connected PV system, a method of low-pass filter control is proposed in this paper.Firstly, the frequency characteristics of the grid-connected PV inverter with LCL filter is analyzed.Secondly, Norton′s equivalent model of single as well as multiple PV units are established.Finally, the harmonic resonance characteristics and the coupling relationship among inverters with different parallel numbers are studied.The SIMULINK simulation results show that the proposed method can effectively suppress the harmonic resonance of grid-connected PVs with LCL filter.
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