Optimization control system for grid-side current harmonics of single-phase PWM (Pulse-Width Modulation) rectifier

• Main Authors: XIE HUICHUN, XU JILAI, LU YAO, WANG YANZHAO, LIU YAN, GAN ZHEYUAN, LI NI, TENG ZIHAN, LIU JIANBEN, YU HUI, ZHAO JUN, LIU ZHENHUAN, HU JINGZHU, ZHANG JIANGONG, ZHANG YEMAO, LIU XINGFA, HUANG RUI, YU YAO, NI YUAN, CHEN YULONG, ZHOU BING, WAN HAO
• Format: Patent
• Language: Chinese; English
• Published: 07.04.2023
• 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 invention discloses an optimal control system for grid-side current harmonics of a single-phase PWM rectifier. The optimal control system comprises a phase-locked loop module, a direct-current voltage signal processing module, a control module and a sine pulse width modulation module, wherein the phase-locked loop module is used for processing a rectifier network side alternating current power supply to obtain a corresponding sinusoidal signal; the direct-current voltage signal processing module is used for processing the rectifier direct-current voltage instruction value and the rectifier direct-current voltage signal to obtain an input signal; the control module is used for processing the sinusoidal signal, the input signal, the rectifier network side alternating current power supply and the rectifier alternating current side voltage signal to obtain a power bridge modulation signal; and the sine pulse width modulation module is used for comparing the power bridge modulation signal with a triangular car