Patent ID: 11862416
Assignee: EATON ELECTRICAL LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A hybrid DC circuit breaker comprising:
a mechanical switch;
a semiconductor switch having a first terminal connected to a first terminal of the mechanical switch; and
a forced resonant injection circuit having a first terminal connected to a second terminal of the semiconductor switch and a second terminal connected to a second terminal of the mechanical switch, the forced resonant injection circuit configured to produce an injection current at the second terminal of the forced injection circuit and comprising:
a DC power supply;
an inverter coupled to the DC power supply and configured to generate a periodic voltage;
a resonant circuit comprising an inductor and a capacitor connected in series to the inverter and configured to generate an alternating current with a gradually increasing amplitude responsive to the periodic voltage;
a rectification circuit connected to the resonant circuit and configured to produce a direct current with a gradually increasing amplitude responsive to the alternating current; and
an output module connected to the rectification circuit and having
a first terminal connected to the second terminal of the semiconductor switch and a second terminal connected to the second terminal of the mechanical switch.