To understand why amorphous alloy transformers can achieve an 80% reduction in no-load loss and become an energy-saving preferred, it is first necessary to clarify the nature and formation mechanism of no-load loss. No-load loss, also known as iron loss, mainly occurs in the transformer core laminations, and its generation is mainly caused by two factors: hysteresis loss and eddy current loss during the magnetization process of the core material. When alternating magnetic flux passes through the transformer core, the magnetic domains in the core material will continuously reverse and rearrange, resulting in energy loss due to internal friction, which is hysteresis loss. At the same time, the alternating magnetic flux will induce an induced current in the core (a conductor), and the current will generate heat in the core, resulting in eddy current loss. The magnitude of no-load loss is directly related to the magnetic properties and resistivity of the core material: the better the magnetic permeability of the material, the smaller the hysteresis loss; the higher the resistivity of the material, the smaller the eddy current loss.
The core reason why amorphous alloy transformers can reduce no-load loss by 80% lies in their unique amorphous core material and advanced preparation technology, which fundamentally solves the pain points of high no-load loss of traditional silicon steel sheet transformers. Amorphous alloy is a new type of energy-saving magnetic material with an irregular atomic structure—unlike the regular arrangement of atoms in crystalline materials such as silicon steel sheets, the atoms of amorphous alloy are randomly distributed in the material matrix, forming a glassy structure. This unique atomic structure gives amorphous alloy excellent magnetic properties and electrical properties, laying a foundation for reducing no-load loss.
In addition to the advantages of the core material itself, the advanced preparation process of amorphous alloy cores also provides a guarantee for reducing no-load loss. The most common preparation method of amorphous alloy is to spray molten metal vapor on a high-speed rotating copper winding frame, and the molten metal solidifies into thin ribs at a cooling rate of 106℃/s. This ultra-fast cooling rate prevents the atoms from forming a regular crystalline structure, thus maintaining the amorphous state. After quenching, the amorphous alloy will have high internal stress, which needs to be reduced through annealing at 200℃~280℃ to further optimize its magnetic properties and ensure the stability of no-load loss reduction. This combination of advanced materials and precise processes enables the no-load loss of amorphous alloy transformers to be reduced by up to 80% compared with traditional silicon steel sheet transformers, achieving a qualitative leap in energy conservation.
First, while reducing no-load loss, amorphous alloy transformers also have excellent load loss performance. Load loss is the energy loss caused by the resistance of the winding when the transformer is under load. Amorphous alloy transformers adopt optimized winding design and high-conductivity copper windings, which can reduce load loss by 10% to 20% compared with traditional transformers. Although load loss is not as large as no-load loss in long-term operation, the superposition of load loss reduction and 80% no-load loss reduction enables amorphous alloy transformers to achieve comprehensive energy saving in the whole operation cycle, especially suitable for scenarios where transformers operate at low load for a long time (such as rural power grids, residential communities, and small and medium-sized enterprises), where the energy-saving effect is more significant.
Third, amorphous alloy transformers have a longer service life and lower maintenance costs, which further enhances their comprehensive energy-saving value. The amorphous alloy core has good corrosion resistance and thermal stability, and is not easy to aging and damage under long-term operation. The average service life of amorphous alloy transformers can reach 20 to 25 years, which is 5 to 10 years longer than that of traditional silicon steel sheet transformers. At the same time, due to the stable performance of the core material and the optimized structural design, the failure rate of amorphous alloy transformers is extremely low, and only regular dust cleaning and routine inspection are required during operation, without complex maintenance work. This not only reduces the maintenance cost of the equipment, but also reduces the energy consumption and resource waste caused by equipment replacement, achieving the goal of full-life cycle energy conservation.
From the environmental perspective, the energy saving of amorphous alloy transformers directly contributes to the reduction of carbon emissions and air pollution. Every 1kWh of electricity saved can reduce carbon dioxide emissions by about 0.785kg. An amorphous alloy transformer with 80% no-load loss reduction can reduce carbon dioxide emissions by hundreds or even thousands of kilograms every year, which is of great significance for promoting the global carbon neutrality goal. In addition, the production process of amorphous alloy does not require high-temperature smelting and complex processing, which consumes less energy and produces less pollutants compared with the production of silicon steel sheets. This makes amorphous alloy transformers not only energy-saving in operation, but also environmentally friendly in the whole industrial chain, conforming to the development trend of green energy equipment.
In contrast, traditional silicon steel sheet transformers, due to their high no-load loss, high noise, short service life and other shortcomings, can no longer meet the increasingly strict energy-saving and environmental protection requirements. Although some improved silicon steel sheet transformers can reduce no-load loss to a certain extent, they are limited by the material properties and can only achieve a maximum no-load loss reduction of 30% to 40%, which is far less than the 80% reduction of amorphous alloy transformers. In addition, other types of energy-saving transformers (such as dry-type transformers) also have their own limitations: dry-type transformers have high load loss, poor heat dissipation performance, and are not suitable for high-power and long-term operation scenarios; superconducting transformers have extremely high initial investment costs and complex maintenance, which are difficult to popularize on a large scale. This makes amorphous alloy transformers stand out in the market competition and become the preferred choice for energy conservation in various fields.
