Boiling heat transfer-based temperature rise characteristics of automotive permanent magnet synchronous motors at peak operating conditions

Using two-phase flow boiling heat transfer theory, the RPI subcooling boiling heat transfer model was established to study the temperature rise characteristics of the permanent magnet synchronous motor (PMSM) of electric vehicles under peak operating conditions, and the effects of coolant inlet temp...

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Bibliographic Details
Published in:Journal of mechanical science and technology 2022, 36(7), , pp.3691-3699
Main Authors: Liange, He, Hongling, Chen, Wenjun, Shi
Format: Article
Language:English
Subjects:
Automobiles
Boiling
Control
Coolants
Cooling systems
Cooling water
Dynamical Systems
Electric vehicles
Engineering
Flow velocity
Heat transfer
High altitude
Industrial and Production Engineering
Inlet flow
Inlet temperature
Mechanical Engineering
Original Article
Permanent magnets
Synchronous motors
Two phase flow
Vibration
기계공학
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Summary:Using two-phase flow boiling heat transfer theory, the RPI subcooling boiling heat transfer model was established to study the temperature rise characteristics of the permanent magnet synchronous motor (PMSM) of electric vehicles under peak operating conditions, and the effects of coolant inlet temperature, altitude and inlet flow rate on the motor temperature rise were analyzed. The results showed that: the temperature rise characteristics of the motor are closer to the test results when boiling heat transfer is considered after the motor is warmed up, so the effect of boiling heat transfer of the cooling system should be considered when studying the temperature rise characteristics of the motor; The temperature rise characteristic of the motor increases with the increase of coolant inlet temperature at peak working condition. The short time required for the motor winding to reach 150 °C indicates that the motor temperature rises quickly. In the plateau environment, the temperature growth rate of the motor at peak working conditions increases with the increase of cooling water inlet temperature, while the motor temperature decreases with the decrease of atmospheric pressure. Thus, due to the boiling heat transfer phenomenon of cooling water two-phase flow, the temperature rise characteristic of the motor at high altitude is better than that in plain area.
ISSN:1738-494X
1976-3824
DOI:10.1007/s12206-022-0643-3