Inductor leakage reactance calculation

author: MagTop
31/08/2022
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Today, I will mainly explain the calculation method of leakage reactance of inductors - multilayer cylindrical coils.

When calculating the leakage reactance of an iron-core inductor, no matter what method is used, it is not necessary to consider the influence of the air gap between the iron core columns, that is, the inductor iron core is treated as an ordinary transformer iron core. The multi-layer cylindrical coils are arranged concentrically in the radial direction, and the layers are separated by oil passages. This form of coil can reduce the radial size, thereby reducing the effective consumption per unit volume, and has a good cooling effect. In addition, because its longitudinal capacitance is much larger than the ground capacitance, the initial distribution is close to the steady state distribution, and it has a good cooling effect. In addition, since its longitudinal capacitance is much larger than the ground capacitance, the initial distribution is close to the steady state distribution, and it has good shock characteristics.
The arc suppression coil often adopts this type of coil structure.

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