| 摘要 |
PROBLEM TO BE SOLVED: To suppress torque ripples by reducing large distortion in a motor voltage waveform of a synchronization motor and shaping it in an ideal waveform.SOLUTION: A permanent magnet type synchronization motor comprises: a cylindrical stator 4 obtained by winding a coil 3 in concentration winding; and a rotor 6 in which permanent magnets 5 are arranged at a regular interval in a circumferential direction at an outer peripheral part. A top height of a summit of a waveform of a motor voltage of the stator 4 is suppressed to a low level by forming a circular arc swell-like magnetic pole part 8 and a substantially crescent shaped recessed part 9 for an outer peripheral part shape of the rotor 6, and the top height is suppressed to a low level and a width in a time direction is widened by forming a plurality of slits 10 to the magnetic pole part 8. The top height is increased and the width in the time direction is further widened by forming a width of a center magnetic path 12 so as to be wider than that of a lateral magnetic path 13. A smooth inclined plane E is formed from the summit of the motor voltage waveform to a skirt part by forming an end part magnetic path 14 from the lateral magnetic path 13 while interposing a lateral slit 10e, and forming the recessed part 9 so as to be adjacent to the end part magnetic path 14. |
