Research Of Asynchronous Starting Motor Starting Performance Of Rare-earth Permanent

This thesis based on field with asynchronous motor start pumping in developed PMSM appeared in the process of starting from the problem, permanent magnet motor starting asynchronous structure theory, analyses the asynchronous starting permanent magnet synchronous motor start-up performance, put forward to improve oilfield in permanent magnet motor start pumping starting asynchronous performance and the method of test. This paper mainly analyses the following questions:1 The oil pumping unit, with a permanent magnet synchronous motor starting asynchronous basic electromagnetic relations, starting with starting performance calculation, and improve the performance start theory.2 For oil pumping unit, with permanent magnet motor starting asynchronous starting process, starting performance is calculated, Puts forward improving oil pumping unit by permanent magnet motor starting asynchronous starting the related theory, To improve oil pumping unit by permanent magnet motor starting asynchronous starting method were studied. According to the characteristics of oil pumping unit, combining theoretical analyses and field data, how to improve the asynchronous starting permanent magnet synchronous motor start-up performance proposed own solution.3 To manufacture a permanent magnet synchronous motor starting asynchronous data measuring and test data, through contrast test parameters change after the manner of motor performance.Obtain the following results:A deep research of permanent magnet motor starting asynchronous electromagnetic relation and influence of permanent magnet motor starting asynchronous starting performance factors, found the solution to improve permanent magnet motor starting performance method, For oilfield pumping use asynchronous permanent magnet motor starting performance starting of research and asynchronous starting permanent magnet synchronous motor in oilfield application of real progress.