Generator having variable power generation

A generator having variable power generation including comprising a rotor disposed on a rotating shaft through which a rotational force is transmitted and a stator fixed to a body, the generator comprising:

• a generator body (10);
• a rotating shaft (20) rotatably installed within the generator body to receive a rotational force, thereby rotating;
• a shaft fixing rotor (30) including a disc-shaped rotational part (31) disposed on the rotating shaft and in which an annular magnet (33) is installed, and a tube-shaped connecting shaft (32) disposed on a center of the rotational part and having an end on which a coupling means (34) detachable by sliding is disposed;
• a plurality of movable rotors (40) slidably disposed on the rotating shaft, including disc-shaped rotational parts (51, 61) in which annular magnets (53, 63) are installed, and tube-shaped connecting shafts (52, 62) disposed on the center of the rotational part and having an end on which coupling means (54, 55, 64) detachable by sliding are disposed, wherein a plurality of movable rotors (40) are axially installed on the shaft fixing rotor successively by an external pressure to receive the rotational force;
• repelling magnets (80) installed within ends of the connecting shaft of the shaft fixing rotor and the connecting shaft of the movable rotor, respectively, the repelling magnets having facing surfaces with the same polarity to space the shaft fixing rotor apart from a plurality of movable rotors by a magnetic repelling force therebetween;
• and
• a stator (90), which is a wound coil, fixed to the body so that the stator (90) is disposed between the shaft fixing rotor and a plurality of movable rotors.