新型抽油机用复合式永磁电机及其驱动系统与检测系统的研究

【作者】 周俊杰；

【导师】 范承志；

【作者基本信息】 浙江大学 ， 电工理论与新技术， 2010， 硕士

【摘要】 随着我国经济发展的进一步深化,国民经济对能源的依赖度越来越高,而石油是最重要的能源之一。目前,国内油田抽油机装备数量巨大,用电量基数可观,而这些装备大多为传统设备,系统远行效率低下,因此,急需大力开发抽油机节能技术。高效节能“复合式永磁电机”可以在低速情况下输出大扭矩直接驱动抽油泵进行工作,从而实现电动机对抽油泵的直接驱动模式(直驱式抽油机系统)。由于采用了直接驱动结构方式,取消了中间多级传动机构,使得整机效率大为提高。节能型抽油机的推广应用,具有重要现实意义。论文的研究工作围绕浙江省重大科技项目“高效节能永磁电机研发”科研课题内容展开,主要研究内容包括:对复合式永磁电机的结构特点进行研究,采用理论分析与有限元仿真相结合的方法,提出削弱电机齿槽转矩的综合措施,并应用于电机设计。研究永磁电机的各种驱动控制方法,进行控制性能的Matlab仿真比较,重点实现复合式永磁电机的无速度传感器控制,设计基于DSP的电机调速控制系统。研制“复合式永磁电机测试系统”,采用虚拟仪器的设计思想,构建电机运行数据实时采集系统,并基于LabVIEW软件开发平台,编写数据处理软件。测试系统通过权威机构检测,实际应用于复合式永磁电机的性能测试工作。更多还原

【Abstract】 Nowadays, as the further development of Chinese economy, energy becomes more and more important for the national economy, such as oil. As is known, the quantity of domestic oil pumping equipment is very large, but most of them are the traditional machinery with low efficiency. Therefore, there is an urgent need to vigorously develop energy-saving technologies for pumping units.The project developed an energy-efficient composite permanent magnet motor, which can direct-drive the oil pumps at low speed and high torque. Using this direct-drive pumping unit structure, the novel pumping units eliminated the multi-level intermediate transmission mechanism, and improved the efficiency of the overall system. There is an important and practical significance to popularize the energy-efficient pumping units.As a part of the project, the research tasks of this paper are as follows:Studied the structural characteristics of composite permanent magnet motor; and then proposed an integrated method to reduce the cogging torque of these motors by a combination of theoretical analysis and 3D finite element simulation.Compared the control-performance of the various driving methods for permanent magnet motors by Matlab simulation. Achieved speed-sensorless control for the composite permanent magnet motors. Design a DSP-based control system for the permanent magnet motors of the oil-pumping unit independently.Developed a "Composite permanent magnet motor Testing System" using the design idea of virtual instrument. Construct a real-time data acquisition system to get motor operating parameters. Wrote the data processing software for "testing system" by LabVIEW.Completed the electrical characteristics test of the composite permanent magnet motor by applying "Composite permanent magnet motor Testing System".更多还原