| 摘要 |
A generator build in a wheel nave, is disclosed. The wheel nave and a casing (2), enclosing the generator rotate around a fixed wheel axis (1). The generator comprises a coil (14) concentric with the wheel axis and fixed to wheel axis (1). The generator is especially characterized in that magnets are provided, concentric with the coil (14) turning a first group with alternating N- and S-magnet poles (21, 22) to a first plane, and a second group with alternating N- and S-magnet poles to an opposite second plane. A first and a second pole changer (12, 13) are provided to rotate in relationship to the wheel axis (1), whereas during the rotation one of the pole changers (12) passes relatively close to the first group of magnet poles and the second pole changer (13) passes relatively close to the second group of magnet poles.
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