The embodiment of the present invention relates to a latch current limiter (LCL) circuit for spacecraft and a spacecraft power system using the same. The LCL circuit are coupled between a power supply terminal and a power receiving terminal, wherein a semiconductor switch circuit is configured between the power supply terminal and the power receiving terminal. The semiconductor switch circuit includes a conduction mode, a cut-off mode and a resistance mode. Moreover, an LLC DC-to-DC converter is adopted for controlling the semiconductor switch circuit. When the current is greater than the over-current value, the LLC DC-to-DC converter changes its operational frequency to change the output voltage such that the semiconductor switch circuit is controlled to enter the resistance mode. After a preset period, when the current does not return the regular value, the LLC DC-to-DC converter controls the semiconductor switch circuit to enter the cut-off mode such that the power which supplies to the load is turned off.
LATCH CURRENT LIMITER CIRCUIT FOR SPACECRAFT AND SPACECRAFT POWER SYSTEM USING THE SAME
17.04.2025
Patent
Elektronische Ressource
Englisch
IPC: | H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B64G Raumfahrt , COSMONAUTICS / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / H03B Erzeugung von Schwingungen, unmittelbar oder durch Frequenzwandlung, durch Schaltungsanordnungen mit aktiven Bauelementen, die nicht als Schalter arbeiten , GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER / H03K PULSE TECHNIQUE , Impulstechnik |
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