Symmetry/Asymmetry in Applied Machine Learning and Neural Networks for Hybrid Energy Ship Power System

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Computer".

Deadline for manuscript submissions: 30 May 2025 | Viewed by 1039

Special Issue Editors

School of Electronic and Electrical Engineering, Yanshan University, Qinhuangdao 066004, China
Interests: optimization strategies for hybrid energy systems; detection of malicious attacks in power systems; power system; state estimation; smart grid

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Guest Editor
School of Electric Power Engineering, Nanjing Insitute of Technology, Nanjing 211167, China
Interests: high-power multilevel converter technology; photovoltaic grid-connected technology; power quality assessment and management; flexible dc transmission; distribution technology

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Guest Editor
Institute of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China
Interests: active disturbance rejection control; multi-agent systems; microgrid control and optimization

Special Issue Information

Dear Colleagues,

As the main carrier of maritime transportation and trade, more than 90% of traditional ships’ main propulsion power units are currently diesel engines that burn heavy oil. The single energy structure of a traditional ship system results in a large amount of greenhouse gases during navigation, which cannot achieve efficient energy utilization. To achieve the global greenhouse gas emission reduction strategy, new energy technologies such as wind energy, solar energy, and fuel cells have been widely applied in new energy ships. However, the intermittent, fluctuating, and uncertain characteristics of new energy power generation devices, as well as the voltage and frequency fluctuations of ship power grids under different operating conditions, have caused difficulties in characterizing the dynamic model of large-scale ship energy power systems as well as coordinating the output of multiple energy sources under different sea conditions. In combination with increasingly mature AI technology, solving the collaborative optimization and control problems of ship energy power systems under dual carbon constraints is critical to ensure the stable operation of ships.

Topics in this Special Issue may include (but are not limited to) the following:

  1. Symmetry in the characterization of the dynamic model of ship energy power systems under different time scales;
  2. Application of emerging technologies in ship energy power systems such as federated machine learning, digital twins, and blockchain;
  3. Collaborative control for new cyber–physical–energy fusion ship energy power systems;
  4. Life prediction and evaluation of energy storage systems for new ship energy power systems;
  5. Symmetry in the coordination control and optimization of scheduling strategies by considering multi-objective scenarios;
  6. Key technologies for the panoramic situational awareness of new ship energy power systems;
  7. Symmetry in the detection and localization of voltage and frequency fault/attack for new ship energy power systems;
  8. Key technologies for the elastic defense of new ship energy power systems in extreme disasters.

Dr. Xinyu Wang
Dr. Shuzheng Wang
Dr. Shaoping Chang
Guest Editors

Manuscript Submission Information

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Keywords

  • symmetry in ship energy power systems
  • symmetry in coordination control and optimization
  • life prediction and evaluation of energy storage systems
  • security mechanism under extreme disaster conditions

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Published Papers (1 paper)

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Research

21 pages, 8672 KiB  
Article
Joint Prediction of Li-Ion Battery Cycle Life and Knee Point Based on Early Charging Performance
by Xinru Cui, Jinlong Zhang, Di Zhang, Yanjun Wei and Hanhong Qi
Symmetry 2025, 17(3), 351; https://doi.org/10.3390/sym17030351 - 26 Feb 2025
Viewed by 523
Abstract
With the rapid development of lithium-ion batteries, predicting battery life is critical to the safe operation of devices such as electric ships, electric vehicles, and energy storage systems. Given the complexity of the internal aging mechanism of batteries, their aging process exhibits prominent [...] Read more.
With the rapid development of lithium-ion batteries, predicting battery life is critical to the safe operation of devices such as electric ships, electric vehicles, and energy storage systems. Given the complexity of the internal aging mechanism of batteries, their aging process exhibits prominent nonlinear characteristics. Knee point, as a distinctive sign of this nonlinear aging process, plays a crucial role in predicting the battery’s lifetime. In this paper, the cycle life and cycle to the knee point of the battery are firstly predicted using the time dimension and space dimension features of the early external characteristics of the battery, respectively. Then, to capture the aging characteristics of batteries more comprehensively, we innovatively propose a joint prediction method of battery cycle life and knee point. Knee point features are incorporated into the battery cycle life prediction model in this method to fully account for the nonlinear aging characteristics of batteries. The experimental validation results show that the TECAN model, which combines time series features and knee point information, performs well, with a root mean square error (RMSE) of 106 cycles and a mean absolute percentage error (MAPE) of only 12%. Full article
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