In an interleaved manner, how is the leakage flux of the winding distributed, and what kind of electromagnetic force is generated?

In the case of a winding arranged in an interleaved manner, the distribution of leakage flux is different from the concentric arrangement mentioned earlier. The predominant type of leakage flux generated in this arrangement is radial leakage flux, and the resulting force is primarily axial.

Due to the closely matched radial dimensions of the high-voltage and low-voltage windings, the distribution of turns is essentially uniform. Therefore, not only can axial leakage flux be ignored, but also under normal operating conditions, radial leakage flux is relatively small, resulting in a correspondingly smaller axial force. The scenario illustrated in the diagram involves two sets of magnetic potential balance groups. The term "magnetic potential balance group" here refers to a pair or a subset of windings with equal magnitudes of magnetic potential but opposite directions.

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