Grid-connected inverter current loop control system based on linear active disturbance rejection control

• Main Authors: WANG XIAOHONG, ZHAI MINGYANG, LI YONGSHUN, PAN ZHIFENG, WANG YU, WU CHUNTAI, WANG ZIJIANG
• Format: Patent
• Language: Chinese; English
• Published: 12.07.2022
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The utility model provides a grid-connected inverter current loop control system based on linear active disturbance rejection control. The system comprises an inversion module, a coordinate transformation module, a control complex impedance module, a switching logic module, a repetitive control module RCC, a linear active disturbance rejection control module LADRC and a PWM modulation module. The input end of the inversion module is connected with a direct-current voltage source, and the inversion module outputs a three-phase power grid; the output end of the inversion module is connected with the input end of the coordinate transformation module, and the voltage output end and the current output end of the coordinate transformation module are respectively connected with the input end of the control complex impedance module and the first input end of the linear active disturbance rejection control module LADRC; according to the utility model, the relative order can be reduced by object modeling based on inver