To solve the problem that, although it is necessary to switch a winding direction between CCW and CW directions in order to output a sinusoidal wave, in a conventional winding method, a winding wire less than one turn is lacked and an output voltage is unbalanced between (+) side and (-) side and in a method for canceling unbalancing of the output voltage between the (+) side and the (-) side by alternately pulling the winding wire around teeth according to the conventional method, since the winding wire is wound around the teeth excessively, the winding wire is wound more than the number of winding in a sinusoidal wave shape, distortion of the output voltage is enlarged and an error in angle detection is enlarged.
A protrusion is provided in addition to a protrusion for pulling a winding wire around teeth, a winding wire for 1/4 turn is added in a CCW direction and pulled around the protrusion, without making the number of winding of sin cos output voltage more or less than the number of winding to provide a sinusoidal wave shape, unbalancing between the (+) side and the (-) side can be canceled, and an error in angle detection can be reduced.
| WO/2008/050419 | MOTOR SYSTEM |
| WO/2023/008762 | POWER TRANSMISSION DEVICE |
Daisuke Nagano
Kentaro Fujii