A study on the improvement of high power in interior permanent magnet

2010 ◽  
Author(s):  
Dae-Sung Jung ◽  
Hyung-Woo Lee ◽  
Ju Lee
Keyword(s):  
Permanent Magnet ◽  
High Power ◽  
Interior Permanent Magnet

scholarly journals Electromagnetic Field Analysis and Design of a Hermetic Interior Permanent Magnet Synchronous Motor with Helical-Grooved Self-Cooling Case for Unmanned Aerial Vehicles

2021 ◽  
Vol 11 (11) ◽  
pp. 4856
Author(s):  
Hae-Sol Lee ◽  
Myeong-Hwan Hwang ◽  
Hyun-Rok Cha
Keyword(s):  
Electromagnetic Field ◽  
Unmanned Aerial Vehicles ◽  
Permanent Magnet ◽  
High Power ◽  
Heat Dissipation ◽  
Power Source ◽  
Flight Duration ◽  
Aerial Vehicles ◽  
Drive Motor ◽  
Interior Permanent Magnet

As unmanned aerial vehicles expand their utilization and coverage, research is in progress to develop low-weight and high-performance motors to efficiently carry out various missions. An electromagnetic field interior permanent magnet (IPM) motor was designed and analyzed in this study that improved the flight performance and flight duration of an unmanned aerial vehicle (UAV). The output power and efficiency of a conventional commercial UAV motor were improved by designing an IPM motor of the same size, providing high power output and high-speed operation by securing high power density, wide speed range, and mechanical stiffness. The cooling performance and efficiency of the drive motor were improved without requiring a separate power source for cooling by introducing the helical-grooved self-cooling case, which has a low heat generation structure. Furthermore, the motor is oil-cooled through rotating power without a separate power source, reducing the weight of the UAV. The heat dissipation characteristics were verified by fabricating a prototype and taking actual measurements to verify the validity of the heat dissipation characteristics. The results of this study are expected to improve the flight duration and performance of UAVs and contribute to the efficiency of the design of a UAV drive motor.

Advanced High-Power-Density Interior Permanent Magnet Motor for Traction Applications

2014 ◽  
Vol 50 (5) ◽  
pp. 3235-3248 ◽  
Author(s):  
Ayman M. EL-Refaie ◽  
James P. Alexander ◽  
Steven Galioto ◽  
Patel B. Reddy ◽  
Kum-Kang Huh ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Power Density ◽  
High Power ◽  
High Power Density ◽  
Permanent Magnet Motor ◽  
Interior Permanent Magnet ◽  
Interior Permanent Magnet Motor

scholarly journals Design and Analysis of Rotor Shapes for IPM Motors in EV Power Traction Platforms

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2601 ◽  
Author(s):  
Myeong-Hwan Hwang ◽  
Jong-Ho Han ◽  
Dong-Hyun Kim ◽  
Hyun-Rok Cha
Keyword(s):  
Permanent Magnet ◽  
Electric Vehicles ◽  
High Power ◽  
High Efficiency ◽  
Torque Ripple ◽  
Hybrid Vehicles ◽  
Recent Increase ◽  
Interior Permanent Magnet ◽  
Rotor Shape ◽  
Two Hybrid

The recent increase in the use of permanent magnet rotor motors underlines the importance of designing a rotor with an interior permanent magnet (IPM) structure, high power, and high efficiency. This study analyzed the rotor shapes of IPM motors for electric vehicles. Five types of motor rotors for automobiles were analyzed, including two hybrid vehicles. In order to minimize the number of variables in the analysis, the size of the motor stators was fixed and only the rotor shapes were modified to compare torque, torque ripple, efficiency and back-electromotive voltage. When the motor properties were compared as a function of rotor shape, the rotor shape with the smallest magnet volume exhibited excellent results for torque, efficiency and torque ripple.

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