This paper proposes a distributed heat source model with periodic average losses to address the heat generation problem of electric fuel pump.An electromagnetic-thermal coupling model of a permanent magnet synchronous motor is established,and the loss characteristics of each motor component and its steady-state temperature distribution at different speeds are numerically simulated.The results show that when the speed of electric fuel pump is 6000 r/min and the supply pressure is 8 MPa,the highest temperature of the internal motor can reach 407.8 K,which is located in the teeth of the stator core,and the temperature gradually decreases to 393.9 K radially outward.The life and reliability of the electric fuel pump will gradually decrease with the demagnetization of permanent magnets when working in a high temperature environment.
关键词
电动燃油泵/周期性平均损耗/电磁-热耦合/温度分布
Key words
electric fuel pump/periodic average loss/electromagnetic-thermal coupling/temperature distribution
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