An electrical converter, comprising: an input voltage selector for converting a three-phase AC input voltage provided at three phase inputs (a, b, c) of the electrical converter into three intermediate voltages provided at an upper voltage node (x), a middle voltage node (y) and a lower voltage node (z); filter capacitors (C x, C y, C z) interconnecting the upper voltage node (x), the middle voltage node (y) and the lower voltage node (z); an output converter for converting the three intermediate voltages into an output voltage; wherein a filter inductor (L f) is interconnected in each phase input (a, b, c) and filter capacitors (C x, C y, C z) are arranged only behind the input voltage selector from the point of view of the phase inputs (a, b, c); wherein the upper voltage node (x), the middle voltage node (y) and the lower voltage (z) node are star-connected or delta-connected via the filter capacitors (C x, C y, C z); wherein the electrical converter comprises a controller adapted for switching semiconductor switches of the input voltage selector such that the upper voltage node (x) is connected to the phase input (a, b, c) with the highest voltage of the three-phase AC input voltage, the lower voltage node (z) is connected to the phase input (a, b, c) with the lowest voltage of the three-phase AC input voltage, and the middle voltage node (y) is connected to the phase input (a, b, c) with a voltage between the highest voltage and the lowest voltage; characterized in that when two of the voltages of the three-phase AC input voltage are crossing, the controller is configured to switch semiconductor switches of the input voltage selector such that the corresponding two phase inputs ( a, b, c) are short-circuited in order to lower current distortions in the phase inputs (a, b, c) of the electrical converter; wherein the two phase inputs (a, b, c) of the electrical converter and the corresponding phase inductors are short-circuited such that a voltage average of a voltage between the corresponding phase inputs ( a, b, c) of the input voltage selector equals a grid voltage provided between the two phase inputs (a, b, c) of the electrical converter; and a duration, during which the two phase inputs (a, b, c) are short-circuited is determined such that during each switching cycle of a PWM modulation scheme of the output converter, the voltage average equals a grid voltage provided between the two phase inputs (a, b, c) of the electrical converter. an input voltage selector for converting a three-phase AC input voltage provided at three phase inputs (a, b, c) of the electrical converter into three intermediate voltages provided at an upper voltage node (x), a middle voltage node (y) and a lower voltage node (z); filter capacitors (C x, C y, C z) interconnecting the upper voltage node (x), the middle voltage node (y) and the lower voltage node (z); an output converter for converting the three intermediate voltages into an output voltage; wherein a filter inductor (L f) is interconnected in each phase input (a, b, c) and filter capacitors (C x, C y, C z) are arranged only behind the input voltage selector from the point of view of the phase inputs (a, b, c); wherein the upper voltage node (x), the middle voltage node (y) and the lower voltage (z) node are star-connected or delta-connected via the filter capacitors (C x, C y, C z); wherein the electrical converter comprises a controller adapted for switching semiconductor switches of the input voltage selector such that the upper voltage node (x) is connected to the phase input (a, b, c) with the highest voltage of the three-phase AC input voltage, the lower voltage node (z) is connected to the phase input (a, b, c) with the lowest voltage of the three-phase AC input voltage, and the middle voltage node (y) is connected to the phase input (a, b, c) with a voltage between the highest voltage and the lowest voltage; characterized in that when two of the voltages of the three-phase AC input voltage are crossing, the controller is configured to switch semiconductor switches of the input voltage selector such that the corresponding two phase inputs ( a, b, c) are short-circuited in order to lower current distortions in the phase inputs (a, b, c) of the electrical converter; wherein the two phase inputs (a, b, c) of the electrical converter and the corresponding phase inductors are short-circuited such that a voltage average of a voltage between the corresponding phase inputs ( a, b, c) of the input voltage selector equals a grid voltage provided between the two phase inputs (a, b, c) of the electrical converter; and a duration, during which the two phase inputs (a, b, c) are short-circuited is determined such that during each switching cycle of a PWM modulation scheme of the output converter, the voltage average equals a grid voltage provided between the two phase inputs (a, b, c) of the electrical converter.