JP2007236073A5 - - Google Patents

Claims (4)

Stator composed of a substantially annular magnetic body having an outer shape including a polygon, and a plurality of main poles formed radially projecting from the magnetic body and forming a number of inductors at respective tips. And a unit rotor comprising a pair of rotor elements which are provided rotatably with respect to the stator via an air gap and have magnetism, and a permanent magnet which is sandwiched between the two rotor elements and is magnetized in the axial direction. And a pair of rotors each having a plurality of teeth formed on the outer peripheral surface of each rotor element of each unit rotor. The elements are arranged so that each tooth is shifted by 1/2 pitch, and both rotor elements are arranged so that the magnetization positions of the respective permanent magnets are opposite and the tooth positions of adjacent rotor elements coincide. A pair of stator and rotor covering from both sides in the axial direction. A permanent magnet type rotating electric machine comprising supported by a bracket,
Each permanent magnet in the two sets of unit rotors includes a yoke that covers the outside in the axial direction of the bracket and the outside in the radial direction of the stator, a bracket from the yoke, and a rotor element on the outside in the axial direction of the unit rotor. Using a permanent magnet of the unit rotor, a rotor element on the inner side in the axial direction of the unit rotor, and a magnetizing coil for generating a magnetic flux in a magnetizing magnetic path reaching the yoke through the stator, a time difference is provided. Permanent magnet type rotating electric machine characterized by being magnetized in this manner. The yoke that covers the outside in the axial direction of the bracket covers only one of the pair of brackets, and the magnetizing by energizing the magnetizing coil is performed on the permanent magnet of the unit rotor on the one bracket side. The magnet is magnetized with respect to the permanent magnet of the unit rotor on the other bracket side by energizing the magnetizing coil with the yoke reversed to the other bracket side after the magnetization. The permanent magnet type rotating electrical machine according to claim 1 . Stator composed of a substantially annular magnetic body having an outer shape including a polygon, and a plurality of main poles formed radially projecting from the magnetic body and forming a number of inductors at respective tips. And a unit rotor comprising a pair of rotor elements which are provided rotatably with respect to the stator via an air gap and have magnetism, and a permanent magnet which is sandwiched between the two rotor elements and is magnetized in the axial direction. And a pair of rotors each having a plurality of teeth formed on the outer peripheral surface of each rotor element of each unit rotor. The elements are arranged so that each tooth is shifted by 1/2 pitch, and both rotor elements are rotated so that the tooth positions of adjacent rotor elements coincide with each other in the direction in which the magnetization direction of each permanent magnet is reversed. The rotor rotation axis is covered from both sides in the axial direction. A permanent magnet type rotating electrical machine is supported by a pair of brackets,
Each of the permanent magnets in the two sets of unit rotors has a yoke that covers the outer side in the axial direction and the outer side in the radial direction of the unit rotor in a state where the two sets of unit rotors are supported on the rotating shaft, and the unit from the yoke. Using a rotor element on the outer side in the axial direction of the rotor, a permanent magnet of the unit rotor, and a magnetizing coil for generating magnetic flux in a magnetizing magnetic path reaching the yoke through the rotor element on the inner side in the axial direction of the unit rotor A permanent magnet type rotating electric machine characterized by being magnetized simultaneously or with a time difference . The yoke covering the unit rotor covers only one of the two sets of unit rotors and covers the radially outer side of the rotor element on the inner side in the axial direction of the one unit rotor. Magnetization by energization of the magnetic coil is performed on the permanent magnet of the one unit rotor, and after the magnetization, the yoke is reversely opposed to the other unit rotor to energize the magnetizing coil. The permanent magnet type rotating electrical machine according to claim 3, wherein the permanent magnet of the other unit rotor is magnetized .