Electromagnetic device

An electromagnetic device comprising:

• an outer peripheral iron core;
• and
• at least three iron core coils which are in contact with or coupled to the inner surface of the outer peripheral iron core, wherein
• the at least three iron core coils each include an iron core respectively having tip side iron core portions and base end side iron core portions, which are located at the outer peripheral iron core side, and at least one of a primary coil and a secondary coil, which are wound around the base end side iron core portions,
• the at least three iron core coils are arranged on a circumference of a circle, and the tip side iron core portion of the iron core of one iron core coil of the at least three iron core coils is in contact with the tip side iron core portions of the iron cores of the other iron core coils adjacent to the one iron core coil;
• each of radially inside ends of the tip side iron core portions converge on a center of the outer peripheral iron core;
• and
• the tip side iron core portions and the base end side iron core portions are in contact with each other in a radial direction of the outer peripheral iron core.