Dynamic current sharing method for three-phase series capacitor Buck converter

• Main Authors: XIANG TIANYU, WU YUNFENG, CHEN YONG, CHEN ZHANGYONG, TANG XUAN, ZHENG ZHANCHAO
• Format: Patent
• Language: Chinese; English
• Published: 27.06.2023
• 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; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention provides a dynamic current sharing technology based on series capacitor charge balance and a three-phase series capacitor Buck converter device thereof, and belongs to the field of power electronics. According to the control method, the three-phase series capacitor Buck converter can be ensured to have good steady-state precision, and meanwhile, the three-phase series capacitor Buck converter can quickly respond to sudden change of load current; according to the control method, the problem that when the three-phase series capacitor Buck converter implements charge balance control, it is difficult to ensure that all state variables reach a new steady state value at the end of a transient process is solved; the control method has the advantages of being constant in switching frequency, irrelevant to converter circuit parameters, zero in steady-state error, rapid in load transient response and the like. 本发明提供基于串联电容电荷平衡的动态均流技术及其三相串联电容Buck变换器装置，属于电力电子领域。该控制方法能够保证三相串联电容Buck变换器在具有良好的稳态精度的同时，可以快速对负载电流突变