An inductor (inductor) is a component that can be converted into magnetic energy and stored. The inductor is similar in structure to a transformer, but has only one winding. Inductor has a certain inductance, it only hinders the change of current.
If the inductor is in a state without current passing, it will attempt to obstruct the current flowing through it, and if the inductor is in a state of current passing, it will try to maintain the current unchanged. Inductor is also known as choke, reactor, dynamic reactor.