Efficient resonant-type transformer inrush current limiter

Start‐up circuit for an electric vehicle fast charger using SSICL technique and a slow estimator

“…There are some structures or control algorithms in the literature [15], which limit start‐up or switching inrush current of converters [16–18]. Generally, inrush‐current limiters for different applications, such as induction machines [19, 20], power transformers [21, 22], and capacitor banks switching [23–25], can be divided into two major categories: (i) Approaches based on the insertion of initial impedance. (ii) Approaches based on synchronised switching. Series reactor type limiters [26, 27], insertion and bypassing a limiting resistor and/or inductor [28], active switches in the linear region of operation [29–31] and power electronics‐based methods are subsets of the first group. Although a fixed reactor would limit the initial inrush current, it may result in system resonance and increase the required voltage rating of the capacitor [23].…”

Transient current limiter for suppressing transformer inrush, motor starting and fault currents in power system

“…B‐4 DC‐reactor type ICL [17–21]. In [22], the deficiencies and benefits of above‐mentioned inrush current suppression approaches are discussed. Except for the DC‐reactor type, the remainders are not industrially applicable due to complexity in design, use of specific materials and high cost.…”