Four methods for determining inductance saturation 1

Inductance saturation is an important phenomenon in power electronics and power systems. Understanding its causes and how to determine whether inductance saturation occurs is crucial for circuit design and system stability. This article will explore in detail the reasons for inductance saturation and four techniques for determining inductance saturation.diode

Inductance is an electronic component that can store energy and suppress the speed of current changes in a circuit. The EP3SL200F1152C4N inductor is typically composed of a conductive coil, which generates a magnetic field around the coil when current flows through it. The magnitude of the magnetic field is proportional to the current passing through the coil. However, when the current increases to a certain extent, the magnetic core material may reach a point where the magnetic field cannot continue to grow linearly with the increase of current, which is called inductance saturation.diode

Reasons for inductance saturation

Inductors are mainly composed of coils (windings) and cores (usually ferromagnetic materials). Inductance saturation is mainly determined by the magnetic properties of its core material. When the current through the inductor increases, the magnetic flux in the core also increases accordingly. In the initial stage, magnetic flux is proportional to current (following Faraday's law of electromagnetic induction), and the inductance value remains constant. But when the current increases to a certain extent, the microscopic magnetic domains of the core material cannot be further aligned, resulting in a decrease in the magnetic permeability (μ) of the core material, which is called magnetic saturation. After magnetic saturation, even if the current continues to increase, the rate of increase in magnetic flux greatly decreases, and the inductance value sharply decreases.diode