Power supply switching method and device and multi-power-supply power supply system

• Main Authors: HUANG MENG, FU PENGLIANG, SONG CHUNYANG, QI YUSHENG, XU ZHIGUO, JIANG YINGYI
• Format: Patent
• Language: Chinese; English
• Published: 04.01.2022
• 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 invention discloses a power supply switching method and device and a multi-power-supply power supply system. The method is applied to a multi-power-supply power supply system. The multi-power-supply power supply system comprises an alternating-current power supply, a direct-current power supply and an energy storage power supply; the method comprises the steps of obtaining a power supply switching instruction, wherein the power supply switching instruction comprises a power supply switching direction; and controlling an energy storage power supply to carry out voltage transition in a power supply switching process according to the power supply switching direction. According to the invention, the flexible switching of a power supply can be realized, the large fluctuation of the bus voltage in a short time in the power supply switching process is avoided, and the stable operation of the multi-power supply system is ensured. 本发明公开一种电源切换方法、装置及多电源供电系统。其中，该方法应用于多电源供电系统，所述多电源供电系统包括交流电源、直流电源、储能电源，该方法包括：获取电源切换指令；其