| Title |
Thermal Reliability Analysis of BLDC Motor in a High Speed Axial Fanby Numerical Method |
| Authors |
문선애(Sun-Ae Moon) ; 이재헌(Jae-Heon Lee) |
| Keywords |
BLDC motor ; 열신뢰성 ; 축류팬 ; 가속수명시험 Brushless DC motor ; Thermal reliability ; Axial fan ; Accelerated-life testing |
| Abstract |
The thermal reliability of the closed-type BLDC motor for the high speed axial fans is analyzed by a numerical method in this paper. Since the module and the motor part are combined in a closed case, the heat generated from a rotor in the motor and the electronic components in the PCB module can not be effectively removed to the outside. Therefore the module will easily fail by high temperature. The accelerated-life testing was accomplished to formulate the life equation and numerical method is used to predict the inside temperature of the PCB module, which is one of the life equation parameter according to the environment. When the environment temperature of BLDC motor is 21, 35 and 50℃, the temperature in the PCB space is predicted as 73.4, 87.5 and 102.4℃. Then the life time with the temperature are calculated as 2,239, 863 and 328 hours. |