Patent ID: 7256567

Claim:
A high-power permanent-magnet generator; comprising a rotating shaft supported for rotation in a stator housing, a rotor fastened on the rotating shaft and provided with a permanent magnet unit of permanent magnet strips positioned at an interval around the rotor, a stator installed inside the stator housing and provided with a winding wound around stator teeth lying at an interval in a circular direction, a flux regulator ring lying between the stator and the rotor for circular movement relatively to the stator, and a flux regulator means operated to increase or decrease an air gap for flux path between the stator and the flux regulator ring to regulate a magnetic flux flowing in the stator; wherein the winding is composed of a first winding part and a second winding part, which are each made independent from one another and made in a three-phase arrangement of U-phase, V-phase and W-phase, the first and second winding parts being wound on the stator teeth in a way staggered one another by one or two slots separating any two adjacent teeth; and wherein the first and second winding parts each have full output lines of the U-phase, V-phase and W-phase led out at respective winding ends and intermediate output lines of U-phase, V-phase and W-phase tapped at respective midway locations of the winding parts, three-phase circuit includes therein three-phase full-wave rectifier circuits connected to the U-phase outputs, V-phase outputs and W-phase outputs of the full output lines and the intermediate output lines, capacitors installed between different phases, and switching means to switch the three-phase circuits from on to another of series connection and parallel connection dependent on output levels, and wherein the first winding part has first output lines of three phases, which are each provided with first switches and further connected across respective first capacitors to the remaining output lines of different phases, the second winding part has second output lines of three phases, which are each provided with second switches and further connected across respective second capacitors to the remaining output lines of different phases, the first winding part has intermediate output lines of three phases, which are each tapped at their associated midway locations of the first winding part, the intermediate output lines being each provided with third switches and further connected across respective third capacitors to the remaining intermediate output lines of different phases, the second winding part has intermediate output lines of three phases, which are each tapped at their associated midway locations of the second winding part, the intermediate output lines being each provided with fourth switches and further connected across respective fourth capacitors to the remaining intermediate output lines of different phases, and the first and second output lines and intermediate output lines are all connected to a load through rectifiers of the three-phase full-wave rectifier circuits.