What are HyMag supermagnets of electric cars?

HyMag super magnets significantly increase the usable magnetic flux density of a permanent magnet by up to 30% more, offering a significant improvement in the energy efficiency of electric motors and wind turbine generators. HyMag supermagnets are less expensive and more environmentally friendly, consuming 60% to 90% less heavy rare earth materials.

The technology used by HyMag supermagnets, developed by researchers at the U.S. Department of Energy's Argonne National Laboratory, could benefit virtually any technology that draws power from electric motors or generators.

What are the benefits of this new HyMag super magnet technology?

Firstly, additional efficiency, which means you will produce more energy or have fewer losses.

It takes greater advantage of the flux density, one of the properties of permanent magnets, which allows us to generate energy. Consequently, the higher the flux density you use to generate energy, the more energy you will generate. In this sense, in order to achieve more efficiency, a higher flow density is necessary.

Conventional permanent magnets composed of iron, niobium and boron were industrialized in the 1990s, but have resisted the efforts that have been made to improve their performance. In fact, permanent magnets are a class of magnets that retain their lines of flow and magnetization after they have been magnetized, conceptually similar to a battery containing electrical charges.

The magnetic flux of any magnet has a lower performance with distance, which makes the use of magnetic flux is insufficient. On the other hand, the microstructure, composition and processes of the known magnetic materials have been studied by the researchers, so that each one could lead to a small improvement of the energy product of the magnet.

This new HyMag super magnet technology has been made possible by improving the performance of the permanent magnet by combining hybrid layers of the material in a particular way that reduces flow leakage. In addition, they can adapt the layers for a specific application.

What benefits do HyMag supermagnets offer electric cars?

Hand Mag supermagnets are an innovative element for electric cars because, for example, the maximum allowable temperature of an engine would be around 150°C. The H and Mag supermagnets are an innovative element for electric cars because, for example, the maximum allowable temperature of an engine would be around 150°C. The H and Mag supermagnets are an innovative element for electric cars because, for example, the maximum allowable temperature of an engine would be around 150°C. But for wind turbines, the maximum temperature can be up to 300ºC, which requires a magnet design that is more robust (not demagnetized) at higher temperatures. There are materials that actually perform better at higher temperatures, as is now the case with HyMag supermagnets.

Another attractive feature of HyMag supermagnets is that, for certain applications, it may require in composition up to 90% fewer heavy rare earth elements, such as dysprosium and gadolinium, by weight, than regular magnets that have similar performance.

These items, mostly imported from China, are scarce, expensive and difficult to recycle. But the engines of electric and hybrid cars contain about a tenth of a kilogram of dysprosium per engine.

HyMag supermagnets could particularly benefit a weight-sensitive application, such as wind turbines, because the increased efficiency of the technology could lead to reduced structures. Stronger magnets, for example, would make it possible to reduce the amount of support and weight-bearing materials in the outer casings found on directly driven wind turbines. The outer roofs represent more than half the weight of a 100 to 130-ton wind tower. Smaller roofs could be designed into higher towers, allowing turbines to have access to stronger winds.

At IMA we inform you about the new technologies of magnetism, as is the case with HyMag superimans. If you have any doubts about the magnet your project needs, do not hesitate to contact us.