Ground fault interruption using DSP based SSPC module

A ground fault interruption (GFI) system is incorporated onto a DSP based LRM of an aerospace vehicle. The GFI system operates with digital controls and, unlike the prior art, the system does not employ current transformers. Synchronization pulses are employed to coordinate instantaneous current mea...

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Bibliographische Detailangaben
Hauptverfasser: Fuller, Randy J, Liu, Zhenning Z, Ghanekar, Milind
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A ground fault interruption (GFI) system is incorporated onto a DSP based LRM of an aerospace vehicle. The GFI system operates with digital controls and, unlike the prior art, the system does not employ current transformers. Synchronization pulses are employed to coordinate instantaneous current measurement samplings in each phase of a multi-phase power system. Coordinated sampling may reduce phase angle current differential errors and improve operational precision of the GFI system.