Electric Vehicle Relay Lifetime Prediction Model Using the Improving Fireworks Algorithm–Grey Neural Network Model

Xuelian Pang,Zhuo Li,Kaihua Liu,Kimhua Tan,Hengyi Li,Ming-Lang Tseng

doi:10.3390/app10061940

Abstract

The relay reliability has an impact on the reliability of the entire electric vehicle system. This paper contributes to propose the improving fireworks algorithm optimizing the grey neural network model to predict the relay lifetime. This paper shows how the mutation operation and mapping operation in the fireworks algorithm are used to improve the convergence ability and running speed; the convergence performance and running speed of improved fireworks algorithm are tested with standard test function and compared with fireworks algorithm; and the grey neural network model–improved fireworks algorithm is used to predict the relay life and compared with grey model, grey neural network, and grey neural network model–fireworks algorithm. The results show that the convergence accuracy of the improved fireworks algorithm is better than the fireworks algorithm. The running time of improved fireworks algorithm is the shortest; the improved fireworks algorithm–grey neural network model has the best prediction effect and the root mean square error value is 6.75% smaller than the fireworks algorithm–grey neural network model.

Highlights

The problem of energy consumption is becoming increasingly serious with the development of science and technology
The results show that the convergence accuracy and running speed of improved fireworks algorithm (IFWA) are improved compared with fireworks algorithm (FWA)
The analysis shows that fitting effect of IFWA-grey neural network (GNN) model and FWA-GNN model are better than the other two models

Summary

Introduction

The problem of energy consumption is becoming increasingly serious with the development of science and technology. New energy systems have been applied in all facets of society to achieve the development goal of green energy-saving [1]. In the new energy industry, industries such as solar energy, wind power, and new energy vehicles are rapidly developing [2,3]. The relay is the core component in the control circuit, which can achieve remote switch control. The safe and reliable operation of the relay is an important basis for the development of the new energy industry. The electric vehicles’ reliability is an important guarantee for the safe operation. The relay lifetime value directly affects the safe and reliable operation of the entire system. The line of charging and discharging is protected by using the

Objectives

Results

Conclusion