Analysis of control strategy of three-phase bridge fully controlled rectifier circuit based on PID principle

In the context of the national "double carbon" strategy, the power system is gradually developing towards a high proportion of new energy generation and a high proportion of access to power electronics. In this context, the reliable operation of rectifier circuits in power systems becomes particularly important, and the study of their circuit control strategies can effectively improve the efficiency and safety reliability of power systems. Therefore, this paper establishes a simulation model of a three-phase bridge fully controlled rectifier circuit based on PID closed-loop control from the viewpoint of the operating principle and PID closed-loop control strategy of the three-phase bridge fully controlled rectifier circuit constructed by IGBTs. By comparing and analyzing the three-phase AC voltage source waveform, trigger pulse waveform and output current waveform with different trigger angles under the no control strategy, PI control strategy and PID control strategy, it is verified that the PID control strategy proposed in this paper has a good rectification effect. At the same time, the PID parameter values are derived by comparing and analyzing the parameter regulation methods to solve the output waveform distortion problem in the rectifier circuit, which is of great significance to the rectification operation of the grid system.