潜水电机设计及屏蔽套损耗分析

发布时间：2018-01-20 01:00

本文关键词： 屏蔽电机屏蔽套有限元法涡流损耗电阻率屏蔽套厚度　出处：《沈阳工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：潜水电机一般分为充油式潜水电机,充水式潜水电机,充气式潜水电机和屏蔽式潜水电机。屏蔽电机和泵一起组成了屏蔽电泵,用来输送易燃、有毒、贵重、含腐蚀性及带放射性不含固体颗粒的介质,在输送液体时绝对无泄漏,而且运转噪音低。屏蔽电机具有体积小、重量轻、安装使用方便、可靠性能高等优点,广泛应用于从井下或湖泊取水,工矿企业排水,城乡建筑排水,居民生活用水,污水污物处理等。屏蔽电机中因为屏蔽套的存在,使得电机的效率低于普通电机。本文从理论上分析了屏蔽套涡流损耗的产生,并推导了屏蔽套涡流损耗的理论公式。根据电机学设计原理,按照技术要求设计了一款电机,对比分析了电机适用的槽型,确定了电机的槽数和极数,并通过有限元分析法分析了电机的各种性能指标,如电机的转速,转矩,电流,转差率,效率以及功率因数均达到技术要求,验证了电机设计的合理性,并在此基础上分析了电机的屏蔽套涡流损耗以及屏蔽套涡流损耗对电机的影响。在屏蔽套损耗分析中,运用有限元法,分别单独分析了定子屏蔽套和转子屏蔽套对电机的影响。在分析屏蔽套涡流损耗对电机的影响中,分析了屏蔽套材料电阻率对电机的影响,同时也分析了屏蔽套厚度对电机性能的影响。相同条件下,屏蔽套在电机定子涡流损耗比屏蔽套在电机转子上涡流损耗大的多,因此屏蔽套在定子上电机的效率比屏蔽套在转子上的电机效率上要低,而功率因数则相反。相同条件下,随着屏蔽套厚度的增加,屏蔽套涡流损耗随着增加,电机的效率也随着降低。本文通过对屏蔽套电阻率和屏蔽套厚度对电机影响的分析结果,对于屏蔽电机屏蔽套的选择具有一定的指导意义。
[Abstract]:The submersible motor is generally divided into oil-filled submersible motor, water-filled submersible motor, inflatable submersible motor and shielded submersible motor. The shielded motor and pump together constitute a shielded electric pump, which is used to transport flammable, toxic and valuable. With corrosive and radioactive medium without solid particles, there is absolutely no leakage when conveying liquid, and the operation noise is low. The shield motor has the advantages of small volume, light weight, convenient installation and high reliability. Widely used in underground or lake water, industrial and mining enterprises drainage, urban and rural construction drainage, household water, sewage treatment and so on. Shielding motor because of the existence of shielding sleeve. The efficiency of the motor is lower than that of the ordinary motor. In this paper, the generation of eddy current loss of the shield sleeve is analyzed theoretically, and the theoretical formula of the eddy current loss of the shield sleeve is deduced. According to the technical requirements of the design of a motor, comparative analysis of the suitable slot motor, determine the number of slots and poles of the motor, and through the finite element analysis of the various performance indicators of the motor, such as the speed of the motor. Torque, current, slip rate, efficiency and power factor all meet the technical requirements, which verifies the rationality of the motor design. On this basis, the eddy current loss of the shield sleeve and the influence of the eddy current loss of the shield sleeve on the motor are analyzed. The finite element method is used in the analysis of the shield casing loss. The influence of stator shield sleeve and rotor shield sleeve on the motor is analyzed separately. In the analysis of the influence of the eddy current loss of the shield sleeve on the motor, the influence of the material resistivity of the shield sleeve on the motor is analyzed. At the same time, the influence of the thickness of the shield sleeve on the performance of the motor is analyzed. Under the same conditions, the eddy current loss of the shield sleeve on the stator of the motor is much greater than that of the shield sleeve on the rotor of the motor. Therefore, the efficiency of the motor on the stator is lower than the efficiency of the motor on the rotor, but the power factor is opposite. Under the same conditions, the eddy current loss of the shield increases with the increase of the thickness of the shield. The effect of the resistivity and thickness of the shield sleeve on the motor is analyzed in this paper, which has a certain guiding significance for the selection of the shield sleeve of the shielded motor.
【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM346

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