| 摘要 |
A synchronous permanent magnet machine including a permanent magnet arrangement for producing a magnetic field having a flux density distribution that is approximately sinusoidal, the permanent magnet arrangement including a permanent magnet pole having a base (11, 21, 51, 71), top face (12, 22, 52, 72), and opposing sides (13a, 13b, 23a, 23b, 53a, 53b, 73a, 73b), the top face (12, 22, 52, 72) comprising a central region (14, 24, 54, 74) midway between the opposing sides (13a, 13b, 23a, 23b, 53a, 53b, 73a, 73b), and curved side regions (15a, 15b, 25a, 25b, 65a, 65b, 75a, 75b) to either side of the central region (14, 24, 54, 74) which meet the central region (14, 24, 54, 74), characterised in that where (16a, 16b, 26a, 26b, 66a, 66b, 76a, 76b) the curved side regions (15a, 15b, 25a, 25b, 65a, 65b, 75a, 75b) meet the central region (14, 24, 54, 74) the inclination of the top face (12, 22, 52, 72) is continuous.
|
