Design of a new-style dynamoelectric device of unipolar induction with low-power

A new-style dynamoelectric device of unipolar induction is putted forward in this paper, which possesses many virtues such as small-bulk, lightweight, unpolluted and unipolar induction as well as simple, it can be used in transport facilities such as the bicycle etc., so as to supply lighting because of its convenient assembly. It is mainly composed of a permanent magnet, soft magnet and an inductive loop. This paper designs the topological configuration of the dynamoelectric device, gives a formula about output electromotive force, and discusses the different parameters which influence the output electromotive force, finally, gives the figure about relationship between the output electromotive force and the air-gap length, angular velocity, as well as the equivalent distance between permanent magnet and soft magnet A. By above analysis electromotive force is obtained when the wheel is rotating, which proves a fact that the new device is novel and effective in application.