Grid-forming inverter with improved response speed and control method thereof

Abstract

A grid-forming inverter comprises: a power stage configured to convert electric power according to on/off controls of switching devices and to output converted electric power to a grid; and a control circuit configured to calculate a first phase control value using an inertia model that integrates a difference between a power command value and an active output power value of the power stage, to calculate a second phase control value through feed-forward control that additionally reflects the power command value in the first phase control value, and to control the switching devices using pulse width modulation (PWM) according to the second phase control value.

Dependencies are inferred from the claim text.