Energy in the inductor is stored in the form of a magnetic field. When current is applied, the energy of the magnetic field expands and increases the energy stored in the inductor. The energy remains constant as long as the current is maintained. If the current is removed, the energy is discharged as the magnetic field contracts.
The main objective of an energy storage inductor is to maintain current in the DC link between the PV panels and the inverter free from fluctuations (minimize ripple). It is not possible to have a fluctuation-free current. Figure 12 and Figure 13 a show the DC link current after the PV modules.
Thus, the power delivered to the inductor p = v *i is also zero, which means that the rate of energy storage is zero as well. Therefore, the energy is only stored inside the inductor before its current reaches its maximum steady-state value, Im. After the current becomes constant, the energy within the magnetic becomes constant as well.
A. The initial energy stored in an inductor depends on the coil inductance, the current passing through the inductor, and the rate of change of this current. The presence of a magnetic core material can also increase the energy-storage capacity. B.
Inductance of the coil: The amount of energy stored in an inductor is directly proportional to its inductance. Higher the inductance, higher will be the energy stored. Current flowing through the coil: The energy stored is directly proportional to the square of the current flowing through the inductor.
Instead, the energy is stored in the magnetic field as the rising current forces the magnetic lines of force to expand against their tendency to become as short as possible—somewhat as a rubber band stores energy when it is stretched. Figure 1 Determining the energy stored by an inductor