Low-ripple adjustable direct-current stabilized power supply control parameter self-tuning method

• Main Authors: ZHANG XIAOPING, TAN YIWEN, LI YIFAN, GONG JUN, YU PING
• Format: Patent
• Language: Chinese; English
• Published: 23.02.2024
• 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; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention discloses a self-tuning method for control parameters of a low-ripple adjustable direct-current stabilized power supply. The method comprises the following steps: establishing a mathematical model between control parameters K1, K2, K3 and K4 of proportional integral-vector proportional integral compound control and an output voltage ripple coefficient alpha and steady-state precision beta of the stabilized power supply; optimizing each control parameter of proportional integral-vector proportional integral compound control by adopting a multi-target artificial bee bird optimization algorithm so as to obtain a function relational expression between the optimal value of each control parameter and the actual output current Io of the voltage-stabilized power supply; therefore, corresponding optimal control parameters under different currents can be obtained, so that the direct-current stabilized power supply can obtain the optimal output voltage ripple coefficient and the optimal steady-state precis