Airflow Cooling Mechanism for High Power-Density Permanent Magnet Motor
High power-density electric machines present the benefits of high torque and speed. However, this generally comes with heating problems characterized by high temperatures that affect performance. Conventional approaches to address overheating are to include cooling fans or jackets within the stator...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2024-01-01
|
| Series: | IEEE Open Journal of the Industrial Electronics Society |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10417077/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841526328829935616 |
|---|---|
| author | Awungabeh Flavis Akawung Besong John Ebot Yasutaka Fujimoto |
| author_facet | Awungabeh Flavis Akawung Besong John Ebot Yasutaka Fujimoto |
| author_sort | Awungabeh Flavis Akawung |
| collection | DOAJ |
| description | High power-density electric machines present the benefits of high torque and speed. However, this generally comes with heating problems characterized by high temperatures that affect performance. Conventional approaches to address overheating are to include cooling fans or jackets within the stator core of the machine. This approach is challenging to implement in small-size high power-density machines. In this article, a cooling mechanism integrated in the rotor of a high power-density permanent magnet motor is proposed. It comprises a set of six holes, shrouded within a hollow shaft. The mechanism is based on conditioning air due to a centrifugal force that is produced by the rotational speed of the rotor from the inlet. A theoretical model based on flow resistance network is proposed to analyze the airflow rate. An analytical thermal model based on lumped parameter thermal network is developed to analyze the effect of the flow rate on the temperature distribution in the motor. Also, a simulation analysis model was conducted using computational fluid dynamics to analyze the effect of air flowing in the motor. An experimental prototype is developed to verify, validate, and evaluate the proposed cooling model. The cooling system is effective in reducing temperatures from speeds above 6000 min<sup>−1</sup>. |
| format | Article |
| id | doaj-art-1f01fee9a21e40ce8dbd25738e4f3829 |
| institution | Kabale University |
| issn | 2644-1284 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of the Industrial Electronics Society |
| spelling | doaj-art-1f01fee9a21e40ce8dbd25738e4f38292025-01-17T00:00:56ZengIEEEIEEE Open Journal of the Industrial Electronics Society2644-12842024-01-015678010.1109/OJIES.2024.336050910417077Airflow Cooling Mechanism for High Power-Density Permanent Magnet MotorAwungabeh Flavis Akawung0https://orcid.org/0000-0002-7150-3743Besong John Ebot1https://orcid.org/0000-0002-5935-4140Yasutaka Fujimoto2https://orcid.org/0000-0002-8106-5425Department of Mathematics, Physics, Electrical Engineering and Computer Science, Yokohama National University, Yokohama, JapanInstitute for Multidisciplinary Sciences, Yokohama National University, Yokohama, JapanDepartment of Mathematics, Physics, Electrical Engineering and Computer Science, Yokohama National University, Yokohama, JapanHigh power-density electric machines present the benefits of high torque and speed. However, this generally comes with heating problems characterized by high temperatures that affect performance. Conventional approaches to address overheating are to include cooling fans or jackets within the stator core of the machine. This approach is challenging to implement in small-size high power-density machines. In this article, a cooling mechanism integrated in the rotor of a high power-density permanent magnet motor is proposed. It comprises a set of six holes, shrouded within a hollow shaft. The mechanism is based on conditioning air due to a centrifugal force that is produced by the rotational speed of the rotor from the inlet. A theoretical model based on flow resistance network is proposed to analyze the airflow rate. An analytical thermal model based on lumped parameter thermal network is developed to analyze the effect of the flow rate on the temperature distribution in the motor. Also, a simulation analysis model was conducted using computational fluid dynamics to analyze the effect of air flowing in the motor. An experimental prototype is developed to verify, validate, and evaluate the proposed cooling model. The cooling system is effective in reducing temperatures from speeds above 6000 min<sup>−1</sup>.https://ieeexplore.ieee.org/document/10417077/Air conditioningcomputational fluid dynamics (CFD)coolingfan-coolflow network (FN)lumped parameter |
| spellingShingle | Awungabeh Flavis Akawung Besong John Ebot Yasutaka Fujimoto Airflow Cooling Mechanism for High Power-Density Permanent Magnet Motor IEEE Open Journal of the Industrial Electronics Society Air conditioning computational fluid dynamics (CFD) cooling fan-cool flow network (FN) lumped parameter |
| title | Airflow Cooling Mechanism for High Power-Density Permanent Magnet Motor |
| title_full | Airflow Cooling Mechanism for High Power-Density Permanent Magnet Motor |
| title_fullStr | Airflow Cooling Mechanism for High Power-Density Permanent Magnet Motor |
| title_full_unstemmed | Airflow Cooling Mechanism for High Power-Density Permanent Magnet Motor |
| title_short | Airflow Cooling Mechanism for High Power-Density Permanent Magnet Motor |
| title_sort | airflow cooling mechanism for high power density permanent magnet motor |
| topic | Air conditioning computational fluid dynamics (CFD) cooling fan-cool flow network (FN) lumped parameter |
| url | https://ieeexplore.ieee.org/document/10417077/ |
| work_keys_str_mv | AT awungabehflavisakawung airflowcoolingmechanismforhighpowerdensitypermanentmagnetmotor AT besongjohnebot airflowcoolingmechanismforhighpowerdensitypermanentmagnetmotor AT yasutakafujimoto airflowcoolingmechanismforhighpowerdensitypermanentmagnetmotor |