Commutation cell, power converter and compensation circuit having dynamically controlled voltage gains

A compensation circuit for limiting switching overvoltage on a power electronic switch of a commutation cell, the commutation cell including a high frequency loop having a parasitic inductance through which a voltage is generated upon turning off of the power electronic switch, the high frequency loop parasitic inductance including a parasitic emitter inductance of the power electronic switch, the compensation circuit comprising:

• a dynamically controlled voltage divider configured to provide a controllable gain of a voltage generated through the parasitic emitter inductance at turn-off of the power electronic switch;
• and
• a connection from the voltage divider to apply, to a gate driver of the power electronic switch, a controllable portion of the voltage generated through the parasitic emitter inductance according to the controllable gain to reduce the voltage generated through the parasitic inductance of the high frequency loop,
• wherein the voltage divider is dynamically controlled to change the controllable portion of the voltage generated through the parasitic emitter inductance based on a voltage of a power source which is configured to power the commutation cell.