ARSM Optimization Design of Permanent Magnet Traction Machine Based on Cell Slope
According to the index,a permanent magnet synchronous traction machine with a rated power of 7.5kWand an effi-ciency greater than 89.7%was designed.Due to the single parameter scan of the magnetic circuit method,the multi-variable and strong coupling relationship in the permanent magnet traction machine cannot be analyzed.And there is an irreconcilable contradiction about weakening cogging torque and sacrificing a certain output torque when setting the oblique slot or oblique pole,so parameters of the traction machine were optimized and adjusted by Adaptive Response Surface Method(ARSM),and a new variable'cell slope'was introduced to neutralize the inherent contradiction of the permanent magnet traction machine.While this paper calculated the optimal chute angle and optimal design point,and simulated optimization characteristics of the traction machine through finite element and then made a prototype.The results show that the ARSM-based optimization can reduce the peak-to-peak value of the cogging torque of the traction machine by 88.3%and increase the efficiency by one percentage point after introducing the cell slope,and the trial-produced prototype has a wide and efficient operating range.
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