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This paper presents a comparison between three architectures of line-start PM motors for oil-pump application. This paper is focused on the performances in synchronous operation as well as the self-starting operations. Effects of electrical parameters on the starting and steady performance characteristics are demonstrated to find a satisfying design to meet required performances, it seems that the...
Since permanent magnet synchronous motors (PMSM) have the advantages of high efficiency and high power factor in comparison with induction motors, much energy would be saved if PMSMs are adopted in pump jacks in oil fields. The load torque of the motor used in pump jacks is much more complex. In one period, the motor works at motor and generator mode alternately, the speed and the stator current of...
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