Electrical converter (10, 20) for converting between an AC signal having at least three phase voltages and a DC signal, comprising: at least three AC terminals (a, b, c), a first and a second DC terminal (P, N), a control unit, at least three converter modules coupled to a respective one of the at least three AC terminals, wherein each of the at least three converter modules comprises: a first converter stage comprising a first switch node, a second converter stage comprising a second switch node, a first inductor, wherein the first and second switch nodes are connected to opposite terminals of the first inductor, a first capacitor (C a), wherein the respective one of the at least three AC terminals and the second DC terminal are connected to opposite terminals of the first capacitor, such that the second DC terminal forms a star-point (n) of the first capacitors (C a) of the at least three converter modules, wherein the first converter stage comprises first active switching devices (T A1, T' A1, T A2, T' A2) series connected between the respective AC terminal and the second DC terminal, wherein the first switch node is a midpoint node of the series connected first active switching devices, characterised in that the first converter stage and the second converter stage each comprise a flying capacitor circuit comprising at least one flying capacitor (C fA, C fB) operably coupled to the respective first and second switch nodes (A, B), wherein the first active switching devices comprise a first switch pair (T A1, T' A1) configured to provide a connection between terminals of the respective at least one flying capacitor (C fA) and the respective AC terminal and the second DC terminal, and a second switch pair (T A2, T' A2) configured to provide a connection between terminals of the respective at least one flying capacitor (C fA) and the first switch node, and characterised in that the control unit is configured to operate the first active switching devices of each of the converter modules such that a flying capacitor voltage (u fA) across the at least one flying capacitor of the first converter stage is clamped to a first voltage (u an) across the first capacitor when the first voltage (u an) drops below a flying capacitor voltage level of the flying capacitor voltage (u fA) until the first voltage (u an) rises to the flying capacitor voltage level, wherein the control unit is configured to keep both switches of the first switch pair turned on simultaneously when the flying capacitor voltage (u fA) is clamped to the first voltage (u an) so as to actively clamp the flying capacitor voltage to the first voltage. at least three AC terminals (a, b, c), a first and a second DC terminal (P, N), a control unit, at least three converter modules coupled to a respective one of the at least three AC terminals, wherein each of the at least three converter modules comprises: a first converter stage comprising a first switch node, a second converter stage comprising a second switch node, a first inductor, wherein the first and second switch nodes are connected to opposite terminals of the first inductor, a first capacitor (C a), wherein the respective one of the at least three AC terminals and the second DC terminal are connected to opposite terminals of the first capacitor, such that the second DC terminal forms a star-point (n) of the first capacitors (C a) of the at least three converter modules, a first converter stage comprising a first switch node, a second converter stage comprising a second switch node, a first inductor, wherein the first and second switch nodes are connected to opposite terminals of the first inductor, a first capacitor (C a), wherein the respective one of the at least three AC terminals and the second DC terminal are connected to opposite terminals of the first capacitor, such that the second DC terminal forms a star-point (n) of the first capacitors (C a) of the at least three converter modules, wherein the first converter stage comprises first active switching devices (T A1, T' A1, T A2, T' A2) series connected between the respective AC terminal and the second DC terminal, wherein the first switch node is a midpoint node of the series connected first active switching devices, characterised in that the first converter stage and the second converter stage each comprise a flying capacitor circuit comprising at least one flying capacitor (C fA, C fB) operably coupled to the respective first and second switch nodes (A, B), wherein the first active switching devices comprise a first switch pair (T A1, T' A1) configured to provide a connection between terminals of the respective at least one flying capacitor (C fA) and the respective AC terminal and the second DC terminal, and a second switch pair (T A2, T' A2) configured to provide a connection between terminals of the respective at least one flying capacitor (C fA) and the first switch node, and characterised in that the control unit is configured to operate the first active switching devices of each of the converter modules such that a flying capacitor voltage (u fA) across the at least one flying capacitor of the first converter stage is clamped to a first voltage (u an) across the first capacitor when the first voltage (u an) drops below a flying capacitor voltage level of the flying capacitor voltage (u fA) until the first voltage (u an) rises to the flying capacitor voltage level, wherein the control unit is configured to keep both switches of the first switch pair turned on simultaneously when the flying capacitor voltage (u fA) is clamped to the first voltage (u an) so as to actively clamp the flying capacitor voltage to the first voltage.