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Nanocrystalline Cores: The Future of Power Electronics?

by:Transmart     2023-04-20

Nanocrystalline Cores: The Future of Power Electronics?

The world is always on the lookout for better, faster, and more efficient ways of doing things. The field of power electronics is no exception, with researchers pushing to develop more efficient and cost-effective ways of producing and managing electrical power.

One of the latest technologies to emerge in this field is nanocrystalline cores. These small, metallic cores are made up of tiny crystals that are just a few nanometres in size. They have the potential to revolutionize power electronics, offering a host of benefits over more traditional core materials.

In this article, we take a closer look at nanocrystalline cores and explore why they may be the future of power electronics.

What are nanocrystalline cores?

Nanocrystalline cores are a type of magnetic core material made up of tiny crystals. These crystals are typically smaller than 100 nm in size and are made up of a mixture of metals, usually iron and nickel, along with other elements such as molybdenum, cobalt, and copper.

The process of creating nanocrystalline cores involves rapid solidification of a molten metal mixture, followed by annealing at high temperatures. This creates a material with a highly refined grain structure, giving it unique properties that make it ideal for power electronics applications.

What are the benefits of using nanocrystalline cores?

There are several benefits to using nanocrystalline cores in power electronics applications, including:

1. Higher efficiency: Nanocrystalline cores have lower losses than other traditional magnetic core materials, such as silicon steel. This means that they waste less energy when converting power and can operate at higher frequencies, resulting in greater efficiency.

2. Higher power density: Because of their small size, nanocrystalline cores can be used to create smaller and more compact transformers and inductors. This means that higher power densities can be achieved, allowing for greater power output in a smaller space.

3. Lower cost: While the initial cost of nanocrystalline cores may be higher than more traditional core materials, the increased efficiency and lower losses can result in cost savings over the lifetime of the device.

4. Higher temperature tolerance: Nanocrystalline cores can withstand higher temperatures than other core materials, making them ideal for use in high-power applications.

5. Reduced electromagnetic interference: The highly refined grain structure of nanocrystalline cores reduces the amount of electromagnetic interference (EMI) generated during operation, an important consideration in sensitive applications.

What are some applications of nanocrystalline cores?

Nanocrystalline cores are ideal for use in a variety of power electronics applications. Some common applications include:

1. Power transformers: Nanocrystalline cores can be used to create smaller and more efficient power transformers, resulting in reduced energy waste and greater efficiency.

2. Inductors: Because of their high power density and reduced EMI, nanocrystalline inductors can be used in a variety of applications where size, weight, and performance are critical.

3. Uninterruptible power supplies (UPS): Nanocrystalline cores can improve the efficiency and reliability of UPS systems, ensuring that critical equipment remains powered during power outages.

4. Electric vehicles: The high power density and temperature tolerance of nanocrystalline cores make them ideal for use in electric vehicle power electronics, allowing for greater range and improved performance.

5. Renewable energy systems: Nanocrystalline cores can help improve the efficiency and reliability of renewable energy systems, such as wind and solar power, by allowing for more efficient power conversion and distribution.


Nanocrystalline cores represent an exciting new technology in the field of power electronics, offering a host of benefits over more traditional magnetic core materials. With their high efficiency, power density, and temperature tolerance, they have the potential to revolutionize a variety of applications, from power transformers to electric vehicles.

While there are some challenges associated with the production and use of nanocrystalline cores, ongoing research is working to overcome these obstacles and bring this technology to a wider market.

As the demand for more efficient and cost-effective power electronics technologies grows, it seems likely that nanocrystalline cores will play an increasingly important role in shaping the future of power electronics.

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