Multi-port power converter and associated system and use

A multi-port power converter, comprising an array of power transistors and three bidirectional ports to connect at least two direct current (DC) elements with at least one single-phase or polyphase alternating current (AC) element;

• wherein the at least three bidirectional ports are:
• a first DC port configured to connect to a first DC element;
• a second DC port configured to connect to a second DC element;
• and an AC port configured to connect to at least one AC element;
• wherein:
• the first DC port is connected to the AC port using a Full-Bridge topology;
• and
• the second DC port is connected to the first DC port using an interleaved Half-Bridge topology (Buck-Boost);
• wherein the power converter further comprises:
• a multivariable control subsystem able to control the current in the at least three bidirectional ports through voltage signals to be generated with each branch of the power converter and through on and off signals of each of the power transistors of the power transistors array, wherein the voltage signals are generated based on instantaneous power requirements in each of the three bidirectional ports;
• and
• at least one arrangement of inductors, wherein each inductor is connected between one of the phases of the first AC port and the second DC port, wherein each inductor is subjected to a sinusoidal voltage of magnitude and frequency predetermined by the first AC port and the second DC port, depending on the at least one AC element to be connected to the AC port and the voltage to be defined in the second DC port;
• wherein the power converter is configured to connect the at least one AC element with the at least two DC elements in a single simultaneous power conversion stage.