1K107 Nanocrystalline Iron Core for Electrical Power Transformers

 

A nanocrystalline iron core is a soft magnetic material made of a fine-grained alloy, created by rapid cooling to form an amorphous ribbon, which is then annealed to create a structure of nanometer-sized grains. These cores have superior magnetic properties like high permeability and low loss compared to traditional materials, making them ideal for high-efficiency applications like power transformers, common mode chokes, and current sensors.

 

nanocrystalline iron core Characteristics and composition

 

Structure: Composed of nanometer-sized magnetic grains scattered within an amorphous matrix.

 

Composition: Iron-based, typically with additions of silicon, boron, niobium, copper, and other elements.

 

Formation: Produced by ultra-rapid cooling of a molten alloy to create a thin, amorphous ribbon, followed by a specific annealing process.

 

 

nanocrystalline core Key comparison

 

• Efficiency: Nanocrystalline cores offer superior energy efficiency due to their very low core losses, especially in higher frequency ranges compared to silicon iron.

 

• Frequency: They are ideal for a wide frequency range, making them competitive with ferrites in the medium-frequency range of 5 kHz to 100 kHz, where they offer lower losses and higher power density.

 

• Flux Density: Nanocrystalline materials have a high saturation flux density, allowing them to handle higher magnetic flux levels before saturating compared to amorphous cores. This makes them well-suited for high-power and transient applications.

 

• Temperature: Nanocrystalline cores maintain stable performance across a wider temperature range than many other materials like ferrites.

 

• Brittleness: Their nanocrystalline structure makes them more brittle than conventional materials like silicon iron, requiring more careful handling during manufacturing and in operation.

 

• Cost: The manufacturing process for nanocrystalline materials is more complex and costly compared to silicon iron or amorphous materials.

 

 

nanocrystalline core Applications

 

Power electronics: High-efficiency power transformers and inductors.

Filters: Common mode chokes for electromagnetic compatibility (EMC).

Measurement: Current transformers for precise current sensing.

New energy: Components for electric vehicles and charging piles.

Other fields: Magnetic amplifiers, wireless charging, and magnetic shielding.

nanocrystalline core specification

Core Build		Window Width		Core Height		Core Width		Core Length
a(mm)	±	b(mm)	c(mm)	d(mm)	±	e(mm)	±	f(mm)	±
9	0.5	10	32.8	15	0.5	28	1	50.8	1.25
10	0.5	11	33	20	0.5	31	1	53	2
11	0.5	13	30	20	0.5	35	1	52	2
11	0.5	13	40	20	0.5	35	1	62	2
11	0.5	13	40	25	0.5	35	1	62	2
11	0.8	13	50	25	0.5	35	1	72	2
11	0.8	13	50	30	0.5	35	1	72	2
13	0.8	15	56	25	0.5	41	1	82	2
13	0.8	15	56	30	0.5	41	1	82	2
13	0.8	15	56	35	0.5	41	1	82	2
16	0.8	20	70	25	0.5	52	1	102	3
16	1	20	70	30	0.5	52	1	102	3
16	1	20	70	40	0.5	52	1	102	3
16	1	20	70	45	1	52	1	102	3
19	1	25	83	35	1	63	1	121	3
19	1	25	83	40	1	63	1	121	3
19	1	25	83	50	1	63	1	121	3
19	1	25	90	60	1	63	1	128	3
22	1	35	85	50	1	79	1	129	4
22	1	35	85	65	1	79	1	129	4
25	1	40	85	55	1	90	1	135	4
25	1	40	85	70	1	90	1	135	4
25	1	40	85	85	1.5	90	1	135	4
30	1	40	85	85	1.5	100	1	155	4
33	1	40	105	85	1.5	106	1	171	5
Note: Additional sizes can be customized to meet specific customer requirements.