High-power-density inversion auxiliary power supply for urban rail transit

• Main Authors: RUI GUOQIANG, HU LEILEI, QIU ZHILING, ZHANG YONG
• Format: Patent
• Language: Chinese; English
• Published: 02.12.2022
• 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; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The utility model discloses a high-power-density inversion auxiliary power supply for urban rail transit. The high-power-density inversion auxiliary power supply comprises a three-level Boost circuit, two LLC high-frequency isolation circuits and a three-level inverter, the direct current input is connected to the input end of the three-level Boost circuit; two output ends of the three-level Boost circuit are respectively connected to input ends of the two LLC high-frequency isolation circuits; the output ends of the two LLC high-frequency isolation circuits are respectively connected to two input ends of the three-level inverter; and the output end of the three-level inverter outputs stable three-phase four-wire alternating current. The inversion auxiliary power supply is small in size, light in weight, high in efficiency and capable of adapting to wide-range direct-current voltage input. 本发明公开了一种高功率密度城市轨道交通用逆变辅助电源，包括一台三电平Boost电路、两台LLC高频隔离电路、一台三电平逆变器；直流输入连接至三电平Boost电路的输入端；三电平Boost电路的两个输出端分别连接至两台LLC高频隔离电路的输入端