Straight-inclined compound stator winding slotless motor for artificial heart pump and its optimization method

Abstract

The invention discloses a straight-skewed composite stator winding slotless motor for an artificial heart pump and an optimization method. The straight-skewed composite stator winding slotless motor for the artificial heart pump comprises a rotation shaft located in the center, and a rotor permanent magnet, a straight-skewed composite winding and a stator iron core sequentially surrounding the rotation shaft from inside to outside, wherein an air gap is formed between the rotor permanent magnet and the straight-skewed composite winding; and the edge of the straight-skewed composite winding is flush with that of the stator iron core. The straight-skewed composite stator winding slotless motor for the artificial heart pump has the beneficial effects that after the straight-skewed composite winding is adopted, the electromagnetic torque of the motor is increased and the harmonic winding coefficient is reduced; the stator has a simple structure; and in comparison with the traditional motor structure, the stator has a slotless structure, the processing and the manufacturing are relatively simple, the cogging torque is eliminated, and copper loss is reduced.

Description

technical field [0001] The invention belongs to the technical field of artificial heart pumps, and in particular relates to a straight-inclined composite stator winding slotless motor for artificial heart pumps and an optimization method thereof. Background technique [0002] Artificial heart pump, also known as blood pump, is a mechanical pump device that partially or completely replaces the heart's blood pumping function, and has broad clinical application prospects. The driving motor is an important part of the artificial heart pump, and its characteristics directly determine the performance of the artificial heart pump. Compared with traditional motors, artificial heart pump drive motors are required to reduce volume, reduce noise, and improve operating performance on the basis of meeting high reliability and high stability. The permanent magnet brushless DC motor has a series of advantages such as high power density, small geometric size, fast dynamic response, and hig...

AI Technical Summary

Problems solved by technology

Although there are ways to weaken the torque ripple, but it cannot eliminate the torque ripple at all

[0004] In addition, the length of the rotor of the permanent magnet brushless DC motor with cogging is equal to the length of the vertical part of the winding, and the winding end of the coil is placed outside the edge of the stator, which has a large thickness and occupies axial space, and cannot effectively use the winding end The internal part increases the magnetic flux leakage and copper loss of the motor, and reduces the rotational torque and efficiency of the motor

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