Bi-directional line-interphase transformer-based converter

A multi-pulse line-interphase transformer converter comprising:

• a magnetic part including magnetic components configured to be connected to a three-phase AC grid;
• and
• an electric part including a multi-phase voltage system configured to be connected to a common DC capacitor;
• wherein the magnetic part is configured to split each AC grid phase n times into two phases, resulting in a plurality of intermediate phases at an internal interface, each intermediate phase corresponding to a pulse line of the multi-pulse line-interphase transformer converter;
• wherein the intermediate phases are connected to the multi-phase voltage system;
• wherein the multi-phase voltage system comprises bridges with actively controlled switches;
• wherein the bridges are connected in parallel to the common DC capacitor;
• and
• wherein the multi-pulse line-interphase transformer converter further comprises a control unit having a signal processing unit configured to emulate the electric part and to provide emulated intermediate phase signals to a controller for controlling the actively controlled switches, and wherein the emulated intermediate phase signals are sinusoidal signals having a pre-calculated phase angle.