ROTOR AND IPM MOTOR USING SAME

[Summary][Problem] In an embedded magnet rotor in which permanent magnets are arranged in a Halbach array, to facilitate the manufacturing of a magnet holding part and to mitigate the generation of useless magnetic flux that does not contribute to a rotational force.[Solution] This rotor 3 is provided with a plurality of main magnet holding parts 17 disposed in the circumferential direction of a rotor core 8 and a plurality of auxiliary magnet holding parts 18 disposed so as to face the spaces between each of the adjacent main magnet holding parts, in which main magnets 11 of which the magnetic pole directions align with the radial direction of the rotor core are fit into the main magnet holding parts and auxiliary magnets 12 of which the magnetic pole directions align with the circumferential direction of the rotor core are fit into the auxiliary magnet holding parts, wherein, if the rotor core 8 is divided into a rotor core inner peripheral part 8a which is to the radially inward side of the main magnet holding parts and a rotor core outer peripheral part 8b which is to the radially outward side of the main magnet holding parts, magnetic path cutoff parts 20 and pairs of bridge parts 21, which are adjacent to the magnetic path cutoff parts and which connect the rotor core inner peripheral part 8a and the rotor core outer peripheral part 8b, are provided between adjacent main magnet holding parts 17 and to the radially inward side of the auxiliary magnet holding parts 18.