| Citation: | FU Yongling, YANG Jiayuan, ZHU Deminget al. Finite element analysis of flow field and temperature field of electro-hydraulic pump by Fluent[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(8): 1647-1653. doi: 10.13700/j.bh.1001-5965.2016.0605(in Chinese)
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The integrated structure and working principle of three phase induction motor-axial piston electro-hydraulic pump (EHP) were introduced. The mechanical losses were calculated. A model of EHP was established in Ansoft software, and then the electromagnetic losses were analyzed. Finite element coupling model was established. The flow and temperature distribution of hydraulic oil as well as the temperature field distribution of the key parts were analyzed by Fluent software. The analysis results depict that hydraulic oil can fully flow in internal flow road. The maximum temperature of stator is not more than 58℃, and the maximum temperature of rotor is not more than 40℃ under rated condition when the inlet oil temperature is 35℃. Cooling effect is better than motor-pump sets. The results also show that stator oil hole can obviously improve cooling effect. The maximum temperature of stator is reduced by 0.6℃, and local region temperature is reduced by more than 3℃ when four oil holes with a diameter of 10 mm are made.
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