矿用机车永磁同步牵引电机有限元分析

发布时间：2018-11-18 13:43

【摘要】：随着经济的快速发展对能源的需求越来越大,目前,我国火力发电量占全部电量的百分之八十以上,对煤炭资源的消耗十分巨大。但是,比较容易开采的露天煤矿和浅层煤矿大都开采完毕或所剩不多,现有的产量已经不能满足经济的快速发展,因此需要加快深层煤炭资源的开采。矿井轨道运输机车是井下主要的交通设施,高性能的机车有利于提升生产效率和经济效益,但是现有的直流牵引和异步牵引电机效率已经做到极致,提升空间很小。永磁同步电动机具有体积小、效率高、功率密度高、损耗低等优点,尤其变频技术的发展,永磁同步电机驱动装置应用快速发展,在煤矿上的应用也越来越多。本文主要是矿井运输机车永磁同步牵引电机的本体设计,主要工作有电机主要尺寸计算、性能计算、有限元仿真、齿槽转矩优化和损耗分析计算。本文包括矿井运输机车牵引电机的本体设计与有限元分析,按照技术要求设计了一台30KW防爆型永磁同步牵引电机。本文首先介绍了课题背景及其意义,分析了矿用电机的现状和永磁同步电动机作为牵引电机的优势。其次,分析了永磁同步电机的工作原理和基本磁路计算,详细分析设计过程和主要电机主要尺寸计算并应用RMxprt进行电磁参数计算。再次,应用软件Ansoft Maxwell2D建立有限元仿真模型并进行静态和瞬态有限元仿真,深入研究了电机空载、负载时的各项性能,文中应用磁极分组偏移和磁极圆周分段两种方法对电机的齿槽转矩优化设计,设计出的电机性能更加优良。最后,对本文设计的电机进行损耗分析和计算,重点是铜耗和铁耗计算,铁芯不同位置处的磁密幅值不同,文中是将铁芯分为六个不同的区域,有限元仿真法得到各个区域的磁密波形分布图,计算出各个区域的铁耗,最终得到整个电机的铁耗。
[Abstract]:With the rapid development of economy, the demand for energy is increasing. At present, the amount of thermal power generation in China accounts for more than 80% of the total electricity, and the consumption of coal resources is very huge. However, most of the open coal mines and shallow coal mines which are easy to mine are finished or little left, and the existing production can not meet the rapid development of economy, so it is necessary to speed up the mining of deep coal resources. Mine rail conveyors are the main underground transportation facilities. High performance locomotives are helpful to improve the production efficiency and economic benefits, but the existing DC traction and asynchronous traction motor efficiency has been achieved to the maximum, and the lifting space is very small. Permanent magnet synchronous motor (PMSM) has the advantages of small size, high efficiency, high power density, low loss and so on. Especially with the development of frequency conversion technology, the application of PMSM drive device is developing rapidly, and the application of PMSM in coal mine is more and more. This paper is mainly about the body design of permanent magnet synchronous traction motor of mine conveyer. The main work includes motor size calculation, performance calculation, finite element simulation, groove torque optimization and loss analysis calculation. This paper includes the body design and finite element analysis of the traction motor of mine conveyer. According to the technical requirements, a permanent magnet synchronous traction motor (PMSM) with 30KW explosion-proof is designed. This paper first introduces the background and significance of the subject, analyzes the present situation of mine motor and the advantages of permanent magnet synchronous motor as traction motor. Secondly, the working principle and basic magnetic circuit calculation of permanent magnet synchronous motor are analyzed. The design process and the main dimensions of the main motor are analyzed in detail, and the electromagnetic parameters are calculated by RMxprt. Thirdly, the finite element simulation model is established by using the software Ansoft Maxwell2D, and the static and transient finite element simulation is carried out. In this paper, the optimum design of the slot torque of the motor is presented by using the two methods of the magnetic pole block offset and the circle section of the magnetic pole, and the performance of the motor is better than that of the designed motor. Finally, the loss of the motor designed in this paper is analyzed and calculated. The emphasis is on the calculation of copper consumption and iron consumption. The magnetic density amplitude at different positions of iron core is different. In this paper, the core is divided into six different regions. The magnetic density waveform distribution map of each region is obtained by finite element simulation method, and the iron loss of each region is calculated, and the iron loss of the whole motor is finally obtained.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD634;TM922.71

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