Research on the Improved Control Algorithm of Virtual Synchronous Generator Based on T-Type Three-Level Inverter

This paper investigates the control strategy of the grid-connected T-type three-level inverter, aiming to enhance the power angle stability of the inverter system under large grid disturbances. The study first establishes the mathematical model of the grid-connected T-type three-level inverter, employing Virtual Synchronous Generator (VSG) control, and proposes a power angle stability control strategy in grid-connected mode, improving the power angle stability after large grid disturbances. Simulation results validate the effectiveness of the proposed method, providing theoretical support and practical guidance for the stability of inverter systems based on grid-connected control strategies.