| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotary machine having a Halbach array field magnet, capable of reducing the cost of manufacture.SOLUTION: A rotary machine 1 configuring a motor and a power generator, comprises a dual Halbach array field magnet configured by respectively arranging permanent magnets 41 and 51 whose cross section vertical to a rotation shaft is rectangular, in a ring shape. The permanent magnets 41 and 51 with the rectangular cross section are arranged in a ring shape at equal angle intervals, respectively. Since wedge-shaped gaps are provided between the adjacent magnets, it is preferred that members for filling those gaps are interposed. Such members are configured by a non-magnetic non-conductive material. By using the permanent magnets whose cross section vertical to the rotation shaft is rectangular, procurement cost of permanent magnets can be suppressed, and rotary machine manufacture can be achieved at low cost. In addition, the usage of such permanent magnets brings about reduction in magnet usage amount, and thus, it can contribute to resource saving. Further, by interposing the members between the adjacent permanent magnets, positioning of the permanent magnets is facilitated, and thereby, the intensity of field magnet and productivity can be improved. |
