航天推进技术研究院主办
[1]程 诚,王浩明,李小芳,等.高速屏蔽电机涡流与水摩损耗试验[J].火箭推进,2019,45(06):66-70.
CHENG Cheng,WANG Haoming,LI Xiaofang,et al.Experimental study on eddy current loss and water friction loss of high-speed shielded motor[J].Journal of Rocket Propulsion,2019,45(06):66-70.
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CHENG Cheng,WANG Haoming,LI Xiaofang,et al.Experimental study on eddy current loss and water friction loss of high-speed shielded motor[J].Journal of Rocket Propulsion,2019,45(06):66-70.
高速屏蔽电机涡流与水摩损耗试验
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
45
期数:
2019年06期
页码:
66-70
栏目:
研究与技术
出版日期:
2019-12-25
- Title:
- Experimental study on eddy current loss and water friction loss of high-speed shielded motor
- 文章编号:
- 1672-9374(2019)06-0066-05
- Keywords:
- high-speed motor; shielded motor; eddy current loss; water friction loss; motor efficiency
- 分类号:
- V434.3
- 文献标志码:
- A
- 摘要:
- 为研究高速屏蔽电机在运行过程中的涡流损耗和水摩损耗,设计了一台额定功率7.5 kW,额定转速15 000 r/min的高速屏蔽电机,通过搭建屏蔽电机湿式空载试验系统进行不同转速下的干式与湿式空载试验,并对比分析了测试结果和电机损耗预估公式计算结果的差异。试验表明:定子屏蔽套涡流损耗和转子与冷却介质间的水摩损耗对高速屏蔽电机的效率影响较大,即使电磁设计较优的高速电机在加入屏蔽套后效率仍然下降约20%～30%; 电机损耗预估公式的准确性取决于经验系数的选取,在高速情况下需要修正; 通过对定子屏蔽套厚度、屏蔽套材料、电机转子直径等进行优化设计能进一步提高高速屏蔽电机的运行效率。
- Abstract:
- In order to study the eddy current loss and water friction loss of high-speed shielded motor during operation, a shielded motor with nominal power of 7.5 kW and nominal rotation speed 15 000 r/min was designed.The wet and no-load test equipment of shielded motor was built to carry out the “dry-mode” and “wet-mode” no-load tests under different rotational speeds, and the difference between the test results and the calculated results by the empirical formula of shielded motor loss was analyzed.The results show that the eddy current loss of the stator shield sleeve and the water friction loss between rotor and cooling medium have great influence on the efficiency of high-speed shielded motor.Even for the high-speed motor with optimized electromagnetic design, the motor efficiency is still reduced by about 20%～30% after applying the shielding sleeve.The accuracy of existing motor loss calculation formulas depends on the empirical coefficient, and it needs to be modified at high speed condition.Finally, it is recommended to optimize the thickness of stator shield sleeve, the shield sleeve material, the rotor diameter, etc.to further improve the operating efficiency of the high-speed shielded motor.
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备注/Memo
收稿日期:2019-03-06; 修回日期:2019-05-02基金项目:上海市空间发动机工程技术研究中心资助项目(17DI2280800)作者简介:程 诚(1987—),男,博士,研究领域为液体空间推进技术
更新日期/Last Update:
2019-12-20