Implementation of TCM grid-connected inverter based on STM32

In this paper, STM32 is used to realize the control of TCM grid-connected inverter, which replaces the traditional control mode of digital logic controller and MCU combination, and simplifies the controller structure. A simple method for calculating the negative driving voltage of gallium nitride is presented. In this paper, the circuit parameters of each part of TCM inverter are designed, and the design scheme of each part of the circuit is given. Finally, a 200W prototype is built to verify the feasibility of the design scheme.