Power converter fault classification method based on multi-feature selection algorithm

基于多特征选择算法的功率变换器故障分类方法

¹ Science and Technology on Avionics Integration Laboratory, China Institute of Aeronautical Radio Electronics, Shanghai 200233, China
² School of Electronics and Information, Northwestern Polytechnical University, Xi’an 710072, China

Received: 3 September 2021

Abstract

In the process of fault diagnosis for the core components of the integrated modular avionics power conversion module, selecting appropriate features can effectively improve the efficiency and classification accuracy of the model, and greatly reduce the computational complexity of the learning algorithm. This paper first designs a typical Sepic structure DC-DC converter model to simulate the typical fault types of the DC-DC converter; secondly, the corresponding original data is obtained through simulation; after data preprocessing, feature extraction and using multiple feature selection fusion algorithm, BP neural network method is used finally for fault diagnosis analysis of DC-DC converter. The simulation verifies the effectiveness of the above method.

摘要

对综合模块化航电电源转换模块的核心部件进行故障诊断的过程中, 选择合适的特征能够有效提高模型的效率和分类准确率, 极大地降低学习算法的计算复杂度。设计了典型的Sepic结构DC-DC变换器模型, 对DC-DC变换器的典型故障类型进行故障模拟; 通过仿真获取相应的原始数据, 采用数据进行预处理、特征提取与多特征选择融合; 利用BP神经网络方法对DC-DC变换器进行故障诊断分析, 仿真验证了该方法的有效性。