Anti-surge electrical converter

An electrical converter, comprising:

• an inverter configured to provide at least one input AC voltage from an input DC voltage;
• an AC-to-AC voltage converter configured to provide an output AC voltage from the at least one input AC voltage, such that the output AC voltage has an amplitude that depends on a frequency of the at least one input AC voltage, the AC-to-AC voltage converter comprising:
• an electric motor configured to provide mechanical rotational energy from the at least one input AC voltage, and
• an electric generator designed to provide an output AC voltage from the mechanical rotational energy;
• and
• a rectifier configured to provide an output DC voltage from the output AC voltage;
• wherein the inverter comprises at least two switching arms each designed to receive the input DC voltage and each having two switches connected to each other at a midpoint, the at least one input AC voltage being respectively provided between the one or more pair of midpoints;
• wherein the inverter further comprises a control device configured to control the switching arms according to an open-loop operation so that the switching arms are controlled independently of the output DC voltage, that is to say without taking into account the output DC voltage.