Magnetic circuit optimization: The winding core can better optimize the magnetic circuit and reduce the magnetic flux loss. In a coiled core, the magnetic flux mainly travels along the axial direction of the core, whereas in a toroidal stacked core, the magnetic flux needs to pass through the air gap between multiple rings, which results in increased magnetic resistance and loss of magnetic flux.
Manufacturing process: The manufacturing process of coiled iron cores is relatively simple and can be made by continuously winding a sheet of material into a cylindrical shape. Ring-stacked cores, on the other hand, require each ring to be made separately and precisely stacked on top of each other, making the manufacturing process more complex.
Mechanical strength: Wound cores have higher mechanical strength because of the larger contact area between the sheet materials, which can provide better support. On the other hand, the ring-stacked core may result in lower mechanical strength due to the smaller contact area between the rings.
Heat dissipation performance: The heat dissipation performance of the wound core is better, because the contact area between the sheet materials is larger, which is conducive to heat conduction. On the other hand, the ring-stacked core may have poor heat dissipation performance due to the small contact area between the rings.
Cost considerations: Coiled cores are relatively inexpensive to manufacture because they are simple to manufacture and require less material. Ring-stacked cores are more expensive to manufacture because of the complexity of the manufacturing process and the need for more materials.