Direct current breaker based on vacuum magnetic blowout transfer and breaking method thereof

A direct current breaker based on vacuum magnetic blowout transfer, comprising:

• a first connection terminal, configured as an inlet wire of the direct current breaker;
• a second connection terminal, configured as an outlet wire of the direct current breaker;
• a main current branch comprising a vacuum mechanical switch, connected between the first connection terminal and the second connection terminal, wherein during current conduction of the direct current breaker, current flows through the main current branch;
• a transfer branch comprising at least two IGBT/IGCT (Insulated Gate Bipolar Transistor)/(Integrated Gate Commutated Thyristor) in series, connected between the first connection terminal and the second connection terminal and connected in parallel with the main current branch;
• an energy dissipation branch, connected between the first connection terminal and the second connection terminal and connected in parallel with the main current branch and the transfer branch;
• and
• a blowout unit, arranged between the main current branch and the transfer branch, wherein the blowout unit comprises a blowout circuit and a blowout coil in parallel;
• during current breaking of the direct current breaker, the blowout circuit excites the blowout coil to generate magnetic blowout so as to raise an arc voltage;
• and the current is transferred from the main current branch to the transfer branch based on the arc voltage.