Non-rotating type direct current generator

A non-rotating type direct current (DC) generator for generating a DC current comprising:

• a drive unit and a generator unit,
• wherein the generator unit includes a round bar-shaped core member,
• a field magnet in which an electric line is wound and a first hollow portion is formed in the central portion, the field magnet disposed on the outside of the core member through the first hollow,
• an armature in which an electric line is wound and a second hollow portion is formed in the central portion, the armature disposed on the outside of the core member through the second hollow portion, and
• a pole piece which is provided between the field magnet and the armature, and
• insulating plates which are disposed between the field magnet and the pole piece and between the armature and the pole piece, and
• wherein the drive unit supplies the field magnet current to the generator unit on the basis of the alternating current of AC power source, wherein the core member or the pole piece is made of pure iron and subjected to heat treatment, and wherein in the heat treatment, the core member or the pole piece is put in a kiln together with a solid fuel, and the solid fuel is burned to heat the core member or the pole piece to a certain temperature or higher, and then the core member or the pole piece is naturally cooled together with the burned solid fuel.