Mitsubishi Electric Corporation

Toshinobu Takeda

Hiroki Ito

Kenji Kamei

Makoto Miyashita

Kazuyori Tahata

Sho Tokoyoda

Masaki Hiratsuka

Kunio Kikuchi

Yusaku Horinouchi

A direct-current circuit breaker includes a switching unit inserted in the direct-current line; and a commutation circuit that includes a series circuit including a first current-limiting element and an interrupting unit that forms a current zero point by superimposing a resonance current on a direct current flowing in the direct-current line and interrupts the direct current at the current zero point, that is connected in parallel with the switching unit, and that becomes a flow path for the direct current after the switching unit is opened, wherein current interruption is performed by the interrupting unit after the switching unit is opened.

Direct-current circuit breaker

Growing community of inventors

Tokyo, Japan

Toshinobu Takeda