Magnetiseringsinduktans

Magnetiseringsinduktans, sometimes referred to as magnetizing inductance or exciting inductance, is a parameter used in the analysis of electrical transformers and inductors. It represents the inductance of the coil winding when it is not carrying any load current. In a transformer, the magnetizing inductance is primarily responsible for the generation of the magnetic flux in the core that links the primary and secondary windings.

This inductance is determined by the physical characteristics of the coil, such as the number of turns, the cross-sectional area of the core, and the permeability of the core material. A higher permeability of the core material leads to a higher magnetizing inductance, meaning less current is required to establish the necessary magnetic flux.

The magnetizing inductance is crucial for understanding transformer behavior, particularly at no load or light load conditions. The magnetizing current, which flows through the primary winding due to the magnetizing inductance, is typically small compared to the full load current. However, it is essential for the operation of the transformer as it creates the magnetic field. Variations in the magnetizing inductance can affect the transformer's efficiency and voltage regulation. It is often considered in parallel with the leakage inductance and the load impedance in equivalent circuit models of transformers.