Innovative Cooling and Thermal Management Solutions for Electrical Machines

A special issue of Machines (ISSN 2075-1702). This special issue belongs to the section "Electrical Machines and Drives".

Deadline for manuscript submissions: 20 July 2024 | Viewed by 652

Special Issue Editor

Key Laboratory of Aircraft Environment Control and Life Support, MIIT, Nanjing University of Aeronautics and Astronautics, 29 Yudao St., Nanjing 210016, China
Interests: aircraft environmental control and thermal management; enhanced heat exchange technology and applications; new refrigeration technology and applications; gas-liquid-solid phase conversion thermal technology

Special Issue Information

Dear Colleagues,

Electrical machines play a pivotal role in various domains such as aerospace, electric vehicles, robotics, compressors, and others. As the output power of electrical machines continues to escalate, their thermal load also intensifies, necessitating efficient cooling and thermal management solutions to regulate internal temperature and ensure optimal output efficiency, reliability, and service life. Currently employed in practical applications are primarily air and liquid cooling methods for cooling electrical machines. Researchers have focused on optimizing the flow channel structure, enhancing heat transfer capabilities, and integrating them with electrical machines. However, it is foreseeable that these single-phase heat transfer technologies will struggle to meet the increasing heat dissipation demands of electrical machines. Leveraging phase change heat transfer technologies involving vapor–liquid and solid–liquid transformations offer a promising solution for designing and developing new cooling structures and systems. Furthermore, with rapid advancements in artificial intelligence technology, integration into cooling optimization schemes holds great potential for significantly improving optimization outcomes.

This Special Issue aims to present recent advances and technologies in the field of cooling and thermal management solutions for electrical machines. Topics include, but are not limited to:

  • Electrical machines;
  • Cooling and thermal management;
  • Output efficiency and reliability;
  • Single-phase heat transfer;
  • Two-phase heat transfer;
  • Heat transfer enhancement;
  • Design and optimization;
  • Artificial intelligence;
  • Industrial applications.

Dr. Yu Xu
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Machines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • electrical machine
  • electrical motor
  • cooling
  • thermal management
  • heat transfer
  • two-phase
  • artificial intelligence

Published Papers (1 paper)

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Research

20 pages, 10278 KiB  
Article
Innovative Design of Cooling System for a High-Torque Electric Machine Integrated with Power Electronics
by Ali Sadeghianjahromi, Stuart I. Bradley and Richard A. McMahon
Machines 2024, 12(5), 293; https://doi.org/10.3390/machines12050293 - 26 Apr 2024
Viewed by 338
Abstract
The growth of electrical machine applications in high-torque environments such as marine propulsion and wind energy is encouraging the development of higher-power-density machines at ever higher efficiencies and under competitive pressure to meet higher demands. In this study, numerical simulations are performed to [...] Read more.
The growth of electrical machine applications in high-torque environments such as marine propulsion and wind energy is encouraging the development of higher-power-density machines at ever higher efficiencies and under competitive pressure to meet higher demands. In this study, numerical simulations are performed to investigate the characteristics of air cooling applied to a 3 MW high-torque internal permanent magnet electric machine with integrated power electronics. The whole system of the main machine and two converters at either end are modelled with all details. Effects of different parameters on the total pressure drop and air flow rate to the machine and converters are examined. Results show that by changing the converter outlet hole size, the air flow rate to the machine and converter can be adjusted. Air guides and pin vents reveal excellent performance in the distribution of air to laminations and windings with a penalty of some increase in pressure drop, which is more pronounced when using smaller outlet holes. Furthermore, the air return manifold increases the pressure drop and causes a reduction in air flow rate to the converter. Insulation between compression plate and laminations is an unavoidable component used in electric machines and acts as a thermal insulator. However, it can also significantly augment pressure drop, especially in combination with smaller outlet holes. Thermal studies of the integrated power electronics illustrate that components’ temperatures are less than the temperature limit, confirming enough air through the converter. Analysis of power electronics in the case of fan failure provides the operational time window for the operators to respond. Full article
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