基于LCL型逆变器的数字陷波器有源阻尼方法研究

发布时间：2018-01-12 20:37

本文关键词：基于LCL型逆变器的数字陷波器有源阻尼方法研究　出处：《电力系统保护与控制》2017年21期 　论文类型：期刊论文

【摘要】：为了解决传统电容电流比例反馈有源阻尼方法控制结构复杂以及由系统延时所导致的谐振阻尼区域狭小等问题,对基于陷波器的有源阻尼方法进行了研究。将系统的谐振阻尼区域从(0,fs/6)拓展到(0,fs/2),消除了延时所带来的影响。同时,为了减小谐振频率波动对陷波器陷波效果的影响,利用经典控制理论中有关偶极子的经验法则得到陷波器允许的谐振频率最大波动范围。并通过系统闭环传递函数的零极点图对系统稳定性进行分析,设计出合理的阻尼比。Matlab/Simulink仿真与实验结果验证了所设计的陷波器有源阻尼方法的有效性。
[Abstract]:In order to solve the traditional capacitive current proportional feedback active damping method control structure is complex and the system delay caused by the resonance damping area is narrow and so on. The active damping method based on notch filter is studied. The resonant damping region of the system is extended from 0 / 0 fs / 6) to 0 / 0 fs / 2 / 2, which eliminates the effect of delay. At the same time. In order to reduce the effect of resonance frequency fluctuation on notch effect. The maximum fluctuation range of resonant frequency is obtained by using the experience rule of dipole in classical control theory, and the stability of the system is analyzed by using the zero pole diagram of the closed-loop transfer function of the system. A reasonable damping ratio. Matlab / Simulink simulation and experimental results are given to verify the effectiveness of the proposed method.
【作者单位】：上海电力学院;中国矿业大学;
【基金】：上海自然科学基金项目(16ZR1413000) 上海绿色能源并网工程技术研究中心(13DZ2251900)~~
【分类号】：TM464;TM761
【正文快照】： This work is supported by Natural Science Foundation of Shanghai(No.16ZR1413000)and Shanghai EngineeringResearch Center of Green Energy Grid-connected Technology(No.13DZ2251900).随着能源问题的日益严重,光伏、风能等新能源发电技术受到了广泛的关注[1-3]。PWM

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