Method and system for determining a phase shift between a phase current and a phase voltage

US11971436B2 · kind B2 · utility

Assignee

• Bombardier Primove GmbH · DE

Inventors

• Andreas Büming · Maxdorf, DE
• Christian Salewski · Speyer, DE
• Thomas Nikles · Mannheim, DE
• Andreas Kappmeier · Mannheim, DE
• Robert Czainski · Zielona Góra, PL

Key dates

• Filing date: Dec 18, 2019
• Grant date: Apr 30, 2024
• Expiry date: Oct 27, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B5/79
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method and a system for determining a phase shift between a phase current and a phase voltage in an AC phase line of a converter. A method and a system for determining a phase shift between a phase current and a phase voltage in an AC phase line of a converter, in particular a converter of a system for inductive power transfer, wherein a phase current change dependent quantity is determined, wherein a voltage-specific reference time point is determined depending on the phase current change dependent quantity, wherein the phase current is determined, wherein a current-specific reference time point is determined depending on the phase current, wherein the phase shift is determined depending on the time difference between the voltage-specific reference time point and the current-specific reference time point.