EMBEDDE PERMANENT MAGNET TYPE ROTARY ELECTRIC MACHINE

摘要

To provide an embedded permanent magnet type rotating electric machine which is superior in the strength of a rotor, can be manufactured at low cost, and can obtain a large torque. An embedded permanent magnet type motor, which has one pole configured of two permanent magnets 34a and 34b and has a plurality of poles of permanent magnets embedded in a rotor, includes a rotor 3 whose magnet embedding holes 35a and 35b communicate with a rotor outer periphery. The rotor 3 has between adjacent poles a q-axis projection 37 projecting in a direction away from a rotor rotation center. The magnet embedding holes 35a and 35b are disposed so as to form an inverted V shape. An outer peripheral edge portion 33 on the outer side of the permanent magnets 34a and 34b has a curvature radius smaller than the distance from a rotation center axis 4a to a rotor outermost peripheral portion. The outer peripheral edge portion 33 is provided with permanent magnet positioning projections 38a and 38b which restrain a movement of the permanent magnets 34a and 34b toward between adjacent poles.