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.

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 (Iu, Iv, Iw) and a phase voltage (Uu, Uv, Uw) in an AC phase line (U, V, W) of a converter (5), in particular a converter (5) 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 (Iu, Iv, Iw) is determined, wherein a current-specific reference time point is determined depending on the phase current (Iu, Iv, Iw), 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.

Abstract: A system for transferring electric energy to a vehicle including an electric conductor arrangement for producing an alternating electromagnetic field and for thereby transferring electric energy to a vehicle, and a current supply for supplying electric energy to the segments. The conductor arrangement including a plurality of consecutive segments. Each segment includes at least one alternating current line for carrying an alternating current. The segments are electrically connected in parallel to each other to the current supply. For a sequence of consecutive segments, a converter is assigned and connected to each segment. The assigned converter is connected to the current supply and is adapted to convert a current carried by the current supply to an alternating current carried by the at least one alternating current line of the segment, so that there is a sequence of assigned converters for the corresponding sequence of consecutive segments.