Power generating structure with dual array of magnetic fields

A power-generating structure with dual array of magnetic fields, comprising a front magnetic disc, a rear magnetic disc, and a coil disc disposed between said front magnetic disc and said rear magnetic disc;

• wherein said front magnetic disc and said rear magnetic disc are respectively provided with a plurality of magnetic elements radially arranged on an inner surface thereof, said coil disc is provided with one or more coil units radially arranged thereon, each coil unit includes a plurality of coils each with different turns of insulated wire, said coil disc is fixed to a shaft at a center thereof, said shaft has a front end fitted in said front magnetic disc and a rear end extends outwardly from said rear magnetic disc, a plurality of blades are attached to said front magnetic disc or said rear magnetic disc, wherein the coils that are more distant from the center of said coil disc are provided with more turns of insulated wire, the coils that have a same distance from the center of said coil disc are provided with same turns of insulated wire, each coil is connected to a pair of electrical wires of a cable that are in turn connected to a control circuit within a nacelle of a wind-power generating device;
• whereby said blades can be driven by wind to rotate said front magnetic disc and said rear magnetic disc to have said coils of said coil units continuously induced different voltages by said magnetic elements;
• when wind flow is weak, the control circuit can be adjusted to allow the coils with fewer turns of insulated wire to supply electrical power;
• when wind flow is strong, the control circuit can be adjusted to allow the coils with more turns of insulated wire to supply electrical power, so that the wind-power generating device can be operated more effectively.