Patent ID: 6703747
Filing Date: 2004-03-09
Classification: H02K

Abstract:
A generator with plural power-generation characteristics, comprising a rotor shaft supported for rotation in a stator frame, a rotor mounted against rotation on the rotor shaft, and a stator arranged around the rotor and fixed to the stator frame, wherein:the rotor comprises a permanent-magnet member composed of permanent-magnet pieces arranged spaced from each other around the rotor shaft, resinous adhesives bonding together adjacent permanent-magnet pieces and a permeable member disposed between the rotor shaft and the permanent-magnet member, the stator is comprised of an inside cylinder arranged around the rotor to define an air gap between confronting surfaces of them, teeth arranged in a way spaced circumferentially on the inside cylinder to form sequential slots, an outside cylinder surrounding around tooth tips of the teeth, at least two systems of stator windings either concentrated-wound or distributed-wound with a preselected slot span, one of which is low power windings each containing a small number of turns while another of which is high power windings each containing a large number of turns, and terminal lines having terminals connected to any preselected low power and high power windings, and the stator has a stator core including a circular toothed member and a cylindrical magnetic path, the circular toothed member being composed of the inside cylinder and the teeth that are integral with the inside cylinder and extend radially outwardly to form the slots opened radially outwardly, and the cylindrical magnetic path being prepared separately from the toothed member and fit over the toothed member.