구동 조건에 따른 영구자석 동기 전동기의 열전달 특성에 관한 수치적 연구

초록

This study focuses on the thermal generation and heat transfer characteristics of a permanent magnet synchronous motor(PMSM) which is considered as an alternative to traditional low-efficiency induction motor(IM) in HVAC applications. Three-dimensional computations are conducted to analyze the flow and heat transfer characteristics of the PMSM. The effect of operating conditions, such as the load and the rotational speed of the PMSM, on the heat transfer characteristics are investigated numerically. As the load torque decreases, the heat transfer ratio from the rotor to the air gap increases, while the ratio to the shaft decreases. As the rotational speed decreases, the heat transfer ratio from the rotor to the air gap decreases, while the ratio to the shaft increases. Based on temperature rise results and heat generation data, predictive equations for the temperature rise of rotor and stator components are derived.

키워드