《潜油螺杆泵专用稀土永磁电机的设计》-毕业论文.doc

摘 要 随着油田开采的要求不断提高，传统游梁式采油系统已经难以适应油田开采中后期复杂的井况。并由于潜油螺杆泵在低转速才可以有效的工作，而由异步电机驱动的潜油螺杆泵采油系统因电机转速较高，难以适应高粘度油和高含砂油等复杂井况。所以，研究低转速、大扭矩、高效节能的潜油螺杆泵永磁同步电机势在必行。 潜油螺杆泵专用稀土永磁同步电动机是一种立式的悬垂电机，它采用定、转子分段的细长结构，各段定子铁心之间用隔磁段铜片隔开，各段转子之间用扶正滑动轴承支撑，由于转子空间有限，永磁体内嵌于转子中，定、转子间装有润滑油。 本文根据潜油螺杆泵专用稀土永磁电机的特殊结构特点，并根据已知参数：频率，额定功率，额定电压，额定转速，手算了电机参数。其次，利用MATLAB程序，充分发挥计算机快速准确的特点，指导电机设计方案的优化。然后，使用AUTOCAD软件进行绘图，画出定转子冲片。 即采用36槽10极结构，定子绕组为分数槽绕组。由于此种电机的主要尺寸比范围较大，定子内径不易确定，本文参照类似等级的永磁电机定转子尺寸计算方法，确定主要尺寸。设计中分析了潜油螺杆泵用永磁电机的结构特点，及单段电机与整体电机之间的机械和电磁关系。确定电机电磁方案后利用ANSOFT建立电机的几何模型，对电机进行磁场分布的计算与仿真，得出了气隙磁密、反电势等波形。 通过设计该永磁电机，熟悉了调速永磁同步电机电磁计算程序。并与传统电机相比较，认识到了潜油螺杆泵用永磁电机的优点。更进一步说明永磁电机在潜油螺杆泵的应用应该得到进一步的研究。 关键词：永磁电动机，螺杆泵，MATLAB，ANSOFT Abstract With the constant deepening of oil exploitation, the conventional beam pumping system has been difficult to adapt to the complex well conditions of the latter oil exploitation. And because its low speed of screw pump can be effective in the work,but the submersible screw pump system driven by induction motor has high speed, so it is difficult to adapt to the oil with high viscosity and sand. Submersible screw pump permanent magnet synchronous motor is a vertical hanging motor. It uses segmented and slender structure for the stators and rotors.The stators are separated by magnetic isolation sections of copper, the rotors are supported by centralizer bearing, because of the rotor space is limited, permanent magnet embedded in the body of the rotor, and the lubricating oil is filled between the stators and rotors. In this paper, according to its special rare earth permanent magnet motor screw pump of the special structure characteristics, and according to the known parameters: the frequency, the power rating, rated voltage, the rated speed,i calculated overall structure design scheme motor by hand.Secondly,by using MATLAB，taking full advantage of the characteristics of computer,that is,quick and accurate,guide motor design scheme optimization. Then, using AUTOCAD software drawing, draw th