摘要
常规的组串型光伏逆变器集群谐振自适应抑制方法为使用最大功率点跟踪法消除低次谐波,该方法易受双反馈协同控制作用影响,导致谐波畸变率过高,因此,需要设计一种全新的组串型光伏逆变器集群自适应抑制方法。构建光伏逆变器集群自适应抑制参数估计模型,提出了组串型光伏逆变器集群谐振自适应抑制策略,实现了光伏逆变器集群谐振自适应抑制。结果表明,设计的光伏逆变器集群谐振自适应抑制方法的抑制效果较好,不同输出功率百分比下的谐波畸变率均较低,具有可靠性和一定的应用价值。
The conventional cluster resonance adaptive suppression method for string photovoltaic inverters uses the maximum power point tracking method to eliminate low order harmonics,which is easily affected by the dual feedback collaborative control effect and leads to high harmonic distortion rate.Therefore,it is necessary to design a new cluster adaptive suppression method for string photovoltaic inverters.A parameter estimation model for adaptive suppression of photovoltaic inverter clusters was constructed,and a resonant adaptive suppression strategy for string type photovoltaic inverter clusters was proposed to achieve resonant adaptive suppression of photovoltaic inverter clusters.The results show that the designed photovoltaic inverter cluster resonance adaptive suppression method has a good suppression effect,and the harmonic distortion rate is low under different output power percentages.It is reliable and has certain application value.
作者
孙晓坤
SUN Xiaokun(Qinghai Yellow River Photovoltaic System Design Consulting Co.,Ltd.,Xi'an,Shaanxi 710000,China)
出处
《自动化应用》
2024年第7期115-117,共3页
Automation Application
关键词
组串型光伏逆变器
光伏逆变器集群
谐振
string type photovoltaic inverter
photovoltaic inverter cluster
resonance
