Application
1.1 Product Features
The three-dimensional wound core transformer is an energy-saving power transformer. It innovatively revolutionizes the traditional laminated magnetic circuit structure and three-phase layout of power transformers, optimizing product performance, such as achieving complete symmetry in the three-phase magnetic circuit, significant energy-saving effects, greatly reduced noise, enhanced heat dissipation and overload capacity, compact structure, and small size.
1.2 Magnetic circuit optimization
① There are no seams between the layers of the three-dimensional wound iron core, and the magnetic circuit is evenly distributed throughout, with no obvious high-resistance areas and no distortion in magnetic flux density at the seams.
The direction of magnetic flux is completely consistent with the crystal orientation of the silicon steel sheet.
③ The lengths of the three-phase magnetic circuits are exactly equal, and the sum of the lengths of the three-phase magnetic circuits is the shortest.
④ The three-phase magnetic circuits are completely symmetrical, and the three-phase no-load currents are completely balanced.
1.3 Low loss, significant power-saving effect
The magnetization direction of the three-dimensional wound iron core is completely consistent with the rolling direction of the silicon steel sheets, and there are no overlapping seams between the core layers. The magnetic flux distribution is uniform throughout the magnetic circuit, with no obvious high-resistance areas or distortion in magnetic flux density at the seams. Under the premise of using the same material, the iron loss process coefficient of the wound iron core decreases from 1.3-1.5 to around 1.05 compared to the laminated iron core. This alone can reduce the iron core loss by 10-20%.
Due to its unique three-dimensional structure, the iron yoke part of the core requires 25% less material compared to traditional laminated cores, and the reduced corner weight accounts for approximately 6% of the total core weight.
③ The shearing process of silicon steel sheets deteriorates their magnetic conductivity. The three-dimensional wound iron core undergoes high-temperature (800°C) vacuum nitrogen-filling annealing treatment, which not only eliminates the mechanical stress of the iron core but also refines the magnetic domains of the silicon steel sheets, enhancing their secondary recrystallization ability. As a result, the performance of the silicon steel sheets is significantly better than their original factory performance.
④ After testing, it has been confirmed that the no-load loss of the three-dimensional transformer is reduced by 25-35% compared to the national standard, and the maximum no-load current can be reduced by 92%.
1.4 Low noise
Since the three-dimensional wound core is formed by continuously and tightly winding silicon steel strip material on a dedicated core winding machine without seams, it does not produce noise due to discontinuous magnetic circuits as in laminated cores. At the same time, the three-phase magnetic circuit and magnetic flux are completely symmetrical, and the working magnetic density is designed reasonably, thus greatly reducing product noise. The sound level measurement of the product's type test is only 47dB, which is 19dB lower than the national standard of 66dB, almost reaching an environmentally friendly and silent state, making it most suitable for indoor and residential use.
1.5 Strong overload capacity
The product itself generates very little heat: the no-load loss and no-load current of the wound iron core transformer are both very small, so the product itself generates very little heat;
The three-phase coils are arranged in a "V" shape, forming a central natural air channel - the "exhaust chimney" - that runs vertically from top to bottom between the coils. Due to the temperature difference of 30-40°C between the upper and lower iron yokes, strong air convection occurs. Cold air replenishes the central channel from below, while heat radiates out from the inner slope of the upper iron yoke, quickly carrying away the heat generated by the transformer in a natural circulation.
1.6 Compact structure, small footprint
The special three-dimensional iron core makes the product structure compact and the layout reasonable. The plane area occupied by the body is reduced by 10-15% compared to traditional products, and the height of the body is reduced by 10-20%. If installed in a box-type substation, the volume of the box can be reduced by nearly 1/4.
The three-dimensional wound core transformer is an energy-saving power transformer. It innovatively revolutionizes the traditional laminated magnetic circuit structure and three-phase layout of power transformers, optimizing product performance, such as achieving complete symmetry in the three-phase magnetic circuit, significant energy-saving effects, greatly reduced noise, enhanced heat dissipation and overload capacity, compact structure, and small size.
1.2 Magnetic circuit optimization
① There are no seams between the layers of the three-dimensional wound iron core, and the magnetic circuit is evenly distributed throughout, with no obvious high-resistance areas and no distortion in magnetic flux density at the seams.
The direction of magnetic flux is completely consistent with the crystal orientation of the silicon steel sheet.
③ The lengths of the three-phase magnetic circuits are exactly equal, and the sum of the lengths of the three-phase magnetic circuits is the shortest.
④ The three-phase magnetic circuits are completely symmetrical, and the three-phase no-load currents are completely balanced.
1.3 Low loss, significant power-saving effect
The magnetization direction of the three-dimensional wound iron core is completely consistent with the rolling direction of the silicon steel sheets, and there are no overlapping seams between the core layers. The magnetic flux distribution is uniform throughout the magnetic circuit, with no obvious high-resistance areas or distortion in magnetic flux density at the seams. Under the premise of using the same material, the iron loss process coefficient of the wound iron core decreases from 1.3-1.5 to around 1.05 compared to the laminated iron core. This alone can reduce the iron core loss by 10-20%.
Due to its unique three-dimensional structure, the iron yoke part of the core requires 25% less material compared to traditional laminated cores, and the reduced corner weight accounts for approximately 6% of the total core weight.
③ The shearing process of silicon steel sheets deteriorates their magnetic conductivity. The three-dimensional wound iron core undergoes high-temperature (800°C) vacuum nitrogen-filling annealing treatment, which not only eliminates the mechanical stress of the iron core but also refines the magnetic domains of the silicon steel sheets, enhancing their secondary recrystallization ability. As a result, the performance of the silicon steel sheets is significantly better than their original factory performance.
④ After testing, it has been confirmed that the no-load loss of the three-dimensional transformer is reduced by 25-35% compared to the national standard, and the maximum no-load current can be reduced by 92%.
1.4 Low noise
Since the three-dimensional wound core is formed by continuously and tightly winding silicon steel strip material on a dedicated core winding machine without seams, it does not produce noise due to discontinuous magnetic circuits as in laminated cores. At the same time, the three-phase magnetic circuit and magnetic flux are completely symmetrical, and the working magnetic density is designed reasonably, thus greatly reducing product noise. The sound level measurement of the product's type test is only 47dB, which is 19dB lower than the national standard of 66dB, almost reaching an environmentally friendly and silent state, making it most suitable for indoor and residential use.
1.5 Strong overload capacity
The product itself generates very little heat: the no-load loss and no-load current of the wound iron core transformer are both very small, so the product itself generates very little heat;
The three-phase coils are arranged in a "V" shape, forming a central natural air channel - the "exhaust chimney" - that runs vertically from top to bottom between the coils. Due to the temperature difference of 30-40°C between the upper and lower iron yokes, strong air convection occurs. Cold air replenishes the central channel from below, while heat radiates out from the inner slope of the upper iron yoke, quickly carrying away the heat generated by the transformer in a natural circulation.
1.6 Compact structure, small footprint
The special three-dimensional iron core makes the product structure compact and the layout reasonable. The plane area occupied by the body is reduced by 10-15% compared to traditional products, and the height of the body is reduced by 10-20%. If installed in a box-type substation, the volume of the box can be reduced by nearly 1/4.
Technical specification
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