High-frequency loss-reducing core power: flux matrix technology reshapes the peak of energy efficiency
In the field of power electronics, the loss and temperature rise of high-power high-frequency transformers are long-term pain points. Under MHz-level high-frequency conditions, the traditional design has a sharp increase in winding AC resistance loss (accounting for 30%+ of the total system loss), resulting in the High Frequency Switching Power Transformer facing three major problems: difficult heat dissipation, large size, and efficiency bottlenecks. In response to this, we innovatively launched a solution based on flux cancellation and matrix winding technology. By reconstructing the winding topology and magnetic circuit design, we can achieve 98% conversion efficiency and 2.9kW/L power density under 15kW/500kHz conditions, providing a highly reliable Switching Power Supply Transformer core for scenarios such as data centers and new energy substations.
Innovative technology achieves four-dimensional breakthroughs
1. Flux cancellation technology: parasitic magnetic flux is offset by reverse winding layout, and the core loss is reduced by 40% compared with traditional designs. It is suitable for 1-3MHz high-frequency conditions and significantly improves the energy efficiency boundary of Small electrical transformers by 9.
2. Matrix planar winding: Subverting the "n:1" turn ratio mode, adopting "0.5n:0.5" 3. Half-turn matrix structure (such as primary 0.5 turns × multiple parallel branches), the AC loss of the winding is reduced by 50%, breaking the skin effect dilemma 9.
4. Dual-path heat dissipation architecture: The planar winding integrates cooling channels and is combined with low thermal resistance core materials. The temperature rise is reduced by 35K compared with the traditional model, ensuring that the High Power High-frequency Transformer can operate stably at a power density of 1kW/cm³29.
Industry application and selection tips
Case: A certain energy storage power station uses a 400V/225kW module group, which reduces the volume by 60% and reduces the annual power loss by 180,000 degrees
Featured functions at a glance
① Magnetic flux self-balancing winding - eliminates eddy current loss caused by leakage magnetic flux
② Laser bonded copper foil - reduces winding contact resistance to 0.1mΩ
③ Nanocrystalline core - high-frequency loss is 70% lower than ferrite
Engineer tips
1. When the frequency is greater than 500kHz, the half-turn matrix design is preferred, and the loss reduction exceeds 45%
2. The core thickness must meet: δ＜√(2ρ/ωμ) (δ: penetration depth, ρ: resistivity)
3. The interlaced winding process can reduce the proximity effect loss by 30%
This solution has passed the IEEE insulation standard certification, providing a full-scenario high-frequency path for Switching Power Supply Transformer from 10W micro devices to MW-level industrial power supplies, redefining the balance between power density and efficiency
