| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an interior magnet type rotating electrical machine that suppresses torque ripples without reducing torque.SOLUTION: An interior permanent magnet type magnet rotor 20 has a cylindrical shape and has flat permanent magnets 40 embedded perpendicularly to a d axis. A stator 100 is arranged on an outer circumference side of the interior permanent magnet type magnet rotor 20 and has circumferentially juxtaposed teeth 103 wound with coils 104 on an inner circumference side. The interior permanent magnet type magnet rotor 20 has four grooves 33, 34, 35, 36 per pole symmetric with respect to the d axis on a peripheral side of the permanent magnet 40 in an outer circumferential surface, where the four grooves 33-36 have the same circumferential width, and has no grooves in regions beyond the peripheral side of the permanent magnet 40 per pole.θ1≥θ2 is satisfied, whereθ1 is an angle formed by two first grooves 33, 34 nearer to the middle of the four grooves 33-36 andθ2 is an angle formed by outer second grooves 35, 36 and the adjacent first grooves 33, 34 of the four grooves 33-36.</p> |
