Patent ID: 7420313

Claim:
A tandem type rotary generator comprising: a rotary shaft that is rotated on an axis thereof; two power generating sections disposed adjacent to each other along an axial direction of the rotary shaft, each of the power generating sections having a Lundell type rotor core fixed to the rotary shaft, a field coil wound on the Lundell type rotor core so as to generate a magnetic field in the Lundell type rotor core, a stator core disposed on an outside of the Lundell type rotor core opposite to the rotary shaft in a radial direction of the rotary shaft, and a stator coil wound on the stator core so as to generate electric power based on the magnetic field; and a cooling section which cools the power generating sections, wherein the rotor cores are disposed to face each other such that a center of the field coil of each power generating section in the axial direction is positioned away from a center of the stator core of the power generating section in the axial direction toward the other power generating section, and the cooling section has two cooling fans disposed, respectively, on both sides of the pair of rotor cores in the axial direction.