Recent Developments in Cooling Systems and Cooling Management for Electric Motors

被引：22

作者：

Konovalov, Dmytro ^{[1
]}

Tolstorebrov, Ignat ^{[1
]}

Eikevik, Trygve Magne ^{[1
]}

Kobalava, Halina ^{[2
]}

Radchenko, Mykola ^{[3
]}

Hafner, Armin ^{[1
]}

Radchenko, Andrii ^{[3
]}

机构：

[1] Norwegian Univ Sci & Technol, Dept Energy & Proc Engn, Kolbjorn Hejes Vei 1, N-7034 Trondheim, Norway

[2] Admiral Makarov Natl Univ Shipbuilding, Kherson Educ Sci Inst, Heat Engn Dept, 44 Ushakov Ave, UA-73003 Kherson, Ukraine

[3] Admiral Makarov Natl Univ Shipbldg, Dept Air Conditioning & Refrigerat, Heroes Ukraine Ave 9, UA-54025 Mykolayiv, Ukraine

来源：

ENERGIES | 2023年 / 16卷 / 19期

关键词：

electric motor; cooling system; vehicle; coolant; refrigerant; power-to-dimension ratio; HEAT-TRANSFER; TRACTION MOTOR; TEMPERATURE CONSIDERATIONS; THERMAL-MODEL; PERFORMANCE; MACHINES; DESIGN; PARAMETER; PROTOTYPE; WINDINGS;

D O I：

10.3390/en16197006

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This study provides an overview of new trends in the development of cooling systems for electric motors. It includes a summary of academic research and patents for cooling systems implemented by leading motor manufacturers at TRL9. New trends in the cooling management of air and liquid cooling systems are discussed and analyzed with a focus on temperature distribution and its influence on the power-to-dimension ratio of electric motors. The prevailing cooling method for synchronous and asynchronous motors is air cooling using external fins, air circulation ducts, air gaps, and fan impellers to enhance efficiency and reliability. Internal cooling with rotor and stator ducts, along with optimized air duct geometry, shows potential to increase the power-to-dimension ratio and reduce motor size. Liquid cooling systems offer a power-to-dimension ratio of up to 25 kW/kg, achieved through redesigned cooling ducts, stator heat exchangers, and cooling tubes. However, liquid cooling systems are complex, requiring maintenance and high ingress protection ratings. They are advantageous for providing high power-to-dimension ratios in vehicles and aircraft. Discussions on using different refrigerants to improve efficient motor cooling are underway, with ozone-friendly natural refrigerants like CO2 considered to be promising alternatives to low-pressure refrigerants with high global warming potential.

引用

页数：31