DC circuit breaker
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2019-10-28
- Publication Date
- 2026-04-01
AI Technical Summary
Existing direct-current circuit breakers face challenges in interrupting both fault currents and load currents with a simple configuration, particularly in high-voltage direct current (HVDC) power transmission, as they struggle to manage residual voltages after current interruption, leading to arc-regeneration issues.
A direct-current circuit breaker design that incorporates a fault current interrupter and a load current interrupter, utilizing a shared resonant circuit with a capacitor and reactor, allows for both fault and load current interruption through separate methods: forced extinction for fault currents and self-excited oscillation for load currents, with a control circuit managing operations to minimize residual voltages.
Enables efficient interruption of both fault and load currents with a simpler configuration by optimizing the resonant circuit for both types of currents, reducing the need for separate circuit breakers and minimizing arc-regeneration.