PROBLEM TO BE SOLVED In the prior art, it is desired to stably power the high output power.
And A magnetic flux generating portion generates magnetic flux, a rotating portion that rotates about an axis of rotation, and a induction coil comprising a winding, and said magnetic flux generating portion and the rotating portion and the induction coil unit , are arranged side by side in the rotation axis direction, the rotating unit is disposed between said magnetic flux generating portion and said induction coil, said rotary part is provided with a magnetic flux change portion, said rotating portion rotates by, the space where the winding and interlinked the magnetic flux to pass across is the change in the magnetic flux part, by the space in which the winding and interlinked the magnetic flux passes through the magnetic flux change portion crossing, and said winding interlinked magnetic flux density of the magnetic flux varies, depending on the change in magnetic flux density of the winding and the interlinked magnetic flux, electromotive force is induced in the induction coil, the power generation device.
.FIELD 1