MMC sub-module double-coil bypass switch triggering device

• Main Authors: TIAN SHIKE, TIAN QI, ZHANG LEI, HU YONGJIE, HU XUEBIN, LIU LULU, SI ZHILEI, XIA KEPENG, HAN KUN, BAI LEICHENG
• Format: Patent
• Language: Chinese; English
• Published: 07.12.2021
• 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 relates to an MMC sub-module double-coil bypass switch triggering device and an MMC sub-module adopting the device. A conventional triggering loop and a standby triggering loop are arranged, the standby triggering loop stores energy through a direct current capacitor of an MMC sub-module body when the MMC sub-module breaks down and the conventional triggering loop fails and cannot close a bypass switch, and automatically triggers the bypass switch to be closed when the stored energy reaches the preset threshold value, so that the bypass switch can still be triggered to be switched on through the standby trigger loop under the condition that a conventional trigger loop of the bypass switch cannot work normally due to failure of a main control board or a high-voltage power supply of the MMC sub-module, manual intervention is not needed, the faulted MMC sub-module is reliably bypassed, and the operation reliability of the flexible direct-current power transmission converter valve is greatly improve