Direct-current permanent magnet brushless motor converter used for rail vehicle

• Main Authors: GUO YAOHUA, SUN SHUXIN, DONG HUANBIN, LIU YOUFENG, ZHANG XIAOJUN, JIANG DONGJIE
• Format: Patent
• Language: English
• Published: 24.02.2016
• 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; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention provides a direct-current permanent magnet brushless motor converter used for a rail vehicle. The direct-current permanent magnet brushless motor converter comprises a direct-current high-voltage circuit, a traction control circuit, an auxiliary converter circuit and a storage battery charger. The direct-current high-voltage circuit comprises a first voltage and current converter, a grounding detection circuit and an input voltage and current detection circuit which are electrically connected in sequence. The first voltage and current converter is electrically connected with an external power grid. The input voltage and current detection circuit is electrically connected with the traction control circuit, the auxiliary converter circuit and the charger. The traction control circuit is used for driving a direct-current permanent magnet brushless motor to pull the vehicle. The auxiliary converter circuit is further electrically connected with alternating-current loads of the rail vehicle and is used for inverting a direct current output by the input voltage and current detection circuit into an alternating current and supplying power to the alternating-current loads. The storage battery charger is further electrically connected with direct-current loads of the rail vehicle and is used for supplying power to the direct-current loads. The converter provided by the invention can be matched with the direct-current permanent magnet brushless motor for usage and also has diversified functions.