Shota Iimura, Shinya Morita
Electric and Magnetic Control Research Section, Applied Physics Research Laboratory, Technical Development Group,
KOBE STEEL, LTD.
We introduce an application of thin wire of soft magnetic pure iron to the movable core for AC solenoid such as electromagnetic pump. Under an AC magnetic field, eddy currents are generated in the iron core, which reduces the responsiveness of the movable core. Therefore, in order to cut off the eddy currents, an iron core bundled with thin wires or pure iron was used as movable core. We introduce examples of optimization of wire diameter and analysis of responsiveness for the movable core using JMAG.
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