关键词: 空心杯无刷直流电机, 绕组形式, 绕组工艺

Abstract: This paper aims to provide a reference for the design and manufacture of coreless brushless direct current (BLDC) motors by comparing and analyzing the winding technology of the three main forms ( straight winding, oblique winding and diamond winding) . The influence of the three winding technologies on the process characteristics was mainly expounded in the aspects of winding,arrangement,shaping,wiring and other processes,and the performance of the motor was simulated in Motor-CAD by taking the Φ22 mm motor as an example. The prototypes of three winding scheme were builted and tested,and the results showed that the straight winding scheme had a higher coverage rate ( 81%) ,better three-phase resistance balance ( 0. 5%) and a larger torque constant ( 14. 28 mN · m / A) . As a result, the straight winding has better process characteristics than the other two windings for coreless BLDC motor.

Key words: coreless brushless direct current motor, winding forms, winding process