The invention discloses an
inductive coupling type
direct current fault current limiter and a control method thereof. The
inductive coupling type
direct current fault current limiter structurally comprises a first bridge arm, a second bridge arm, a third bridge arm, a fourth bridge arm and an
H bridge circuit formed by the first bridge arm, the second bridge arm, the third bridge arm and the fourth bridge arm, wherein the first bridge arm and the second bridge arm are connected in series, the fourth bridge arm and the third bridge arm are connected in series, and a series
branch formed by the first bridge arm and the second bridge arm is connected with a series
branch formed by the third bridge arm and the fourth bridge arm in parallel. The control method for the
inductive coupling type direct-current
fault current limiter comprises the steps: initializing, and when a fault
signal is detected, turning off an IGBT set, so that
current consumption of an
inductance loop is made to be zero; triggering the IGBT set again; and recovering a current
limiter to prepare for the next fault. Compared with the prior art, the inductive
coupling type
direct current fault current
limiter is used for a low-
voltage flexible direct-current power distribution network, and has the advantages that 1) during normal operation, adverse effects on
transient response characteristics and operation stability of a direct-current
system are avoided, and 2) after direct current fault, the rapid rising of the fault current can be effectively limited, and sufficient action time is created for protection and fault isolation.