基于FastICA-LDA的光伏并网逆变器故障诊断
Fault diagnosis of photovoltaic grid-tie inverters based on FastICA-LDA
张磊 1余茂全 1夏远洋2
作者信息
- 1. 安徽水利水电职业技术学院 机电工程学院,安徽 合肥 231603
- 2. 雅砻江流域水电开发有限公司,四川 成都 610051
- 折叠
摘要
为了实现逆变器开路故障诊断,提出了一种新的诊断方法.该方法采用快速独立成分分析算法判定逆变器是否发生单管开路故障,如果发生单管开路故障,计算旋转电流Id频域下的特征值,将这些特征值作为线性判别分析模型的输入值,最后由LDA模型输出逆变器工作状态编号,从而实现单管开路定位.经过MATLAB仿真验证表明,所提方法对光伏并网逆变器故障的诊断效果较好.
Abstract
In order to achieve the open-circuit fault diagnosis of inverters,this paper proposes a new diagnostic method.This method uses a fast independent component analysis algorithm to determine whether a single tube open-circuit occurs in the inverter.If a single tube open-circuit occurs,the characteristic values in the frequency do-main of the rotating current Id are calculated,and these characteristic values are used as input values for the linear discriminant analysis model.Finally,the LDA model outputs the inverter operating status number to achieve single tube open-circuit positioning.Through MATLAB simulation verification,it has been shown that the proposed method is effective in fault diagnosis of PV grid-connected inverters.
关键词
并网逆变器/开路故障/频域特征/快速独立成分分析/线性判别分析Key words
grid-tie inverter/open-circuit fault/frequency domain features/fast independent component analy-sis(FastICA)/linear discriminant analysis(LDA)引用本文复制引用
基金项目
2022年度安徽省高校自然科学研究项目(2022AH052297)
2022年度安徽省高校自然科学研究项目(2022AH052284)
出版年
2024
NETL
NSTL
万方数据