Electro-permanent magnet technology is based on a simple but important principle: by introducing an electric current into a magnet, a magnetic field of a certain size can be generated around the magnet. This magnetic field can be amplified or reduced, depending on the number of wires in the magnet and the size of the current. When an electric current is passed through the magnet, a magnetic field is generated in the magnet, and this magnetic field can drive a variety of different types of machines.
There are two types of permanent magnets used in the realization of the electromagnetic technology, variable permanent magnets and constant permanent magnets. Variable permanent magnets change the direction of the magnetic field by means of an electric current, while constant permanent magnets keep the magnetic field constant forever. When the magnetic field of variable permanent magnets is the same as that of constant permanent magnets, the electromagnetic field is magnetized, and vice versa, it is demagnetized. Variable permanent magnets generally use Alnico and constant permanent magnets generally use NdFeB.
Meanwhile, the magnetic field of an electro-permanent magnet can be enlarged or reduced, and each magnet has a direction lined up by positive and negative poles at its point of convergence, and this direction can be combined in a variety of ways. These variations in polarity and direction can enable the magnets to play different roles in different scenarios.
With a wide range of applications, from manufacturing household appliances to heavy construction work in building high bridges, the range and reliability of electro-permanent magnet technology is unrivaled. In addition to electro-permanent magnet suction cups, this technology can be used in electric motors, generators, transmission systems, and many other areas that can reap tremendous economic and environmental benefits from this technology.
