Insulation and fault monitoring for enhanced fault detection

US11703536B2 · kind B2 · utility

Assignee

• Rolls-Royce Corporation · US

Inventors

• David Loder · Carmel, US
• Sándor Hallai · Indianapolis, US
• Gabor Nagy · Redmond, US
• Máté Bérces · Indianapolis, US
• Peter Nemeth · Indianapolis, US

Key dates

• Filing date: Jun 25, 2021
• Grant date: Jul 18, 2023
• Expiry date: Oct 1, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R31/392
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A fault monitoring device may monitor and detect for faults corresponding to a high-side voltage rail, to low-side voltage rail, or internally within a voltage source connected to the high-side voltage rail and the low-side voltage rail. The fault monitoring device may determine sample voltage levels and/or sample resistance values to detect the faults. Also, in various embodiments, the fault monitoring device may perform one or more fault monitoring processes over multiple stages. The fault monitoring device may determine the sample voltage levels and/or the sample resistance values while switching a secondary resistance circuit in different states over the multiple stages.