Explosion-proof high-voltage frequency converter

• Main Authors: LUO ZIYONG, LI RUICHANG
• Format: Patent
• Language: Chinese; English
• Published: 17.12.2014
• 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 OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROL OR REGULATION THEREOF; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The utility model discloses an explosion-proof high-voltage frequency converter, which comprises a machine shell, three-phase AC power supply input ends and n groups of variable frequency driving device, wherein the n groups of variable frequency driving device are installed in the machine shell; and each variable frequency driving device comprises three-phase contactors, three-phase rectifiers, filtering capacitors and an inverter, each three-phase contactor is externally connected with the corresponding three-phase AC power supply input end, an output end of each three-phase contactor is connected with the corresponding three-phase rectifier, an output end of each three-phase rectifier is connected with an input end of the inverter, and each filtering capacitor is connected between two output ends of the corresponding three-phase rectifier. The explosion-proof high-voltage frequency converter enhances the reliability of equipment operation, cannot cause the shutdown of all motors of a fully-mechanized minin