Two-motor fault-tolerant inverter

• Main Authors: LIU SAIDE, HUANG WENXIN, JIANG WEN, ZHAO YONG, LIN XIAOGANG
• Format: Patent
• Language: Chinese; English
• Published: 07.12.2018
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention discloses a two-motor fault-tolerant inverter, which comprises a DC bus, a capacitor, six switch tube arms, two motors and two motor neutral point connecting lines. The three phases of afirst motor are respectively connected to the midpoints of a first bridge arm, a second bridge arm, and a third bridge arm, the three phases of a second motor are respectively connected to the midpoints of a fourth bridge arm, a fifth bridge arm and a sixth bridge arm, and the neutral points of the two motors are connected to each other. The topological structure of the two-motor fault-tolerant inverter provided by the invention not only realizes the normal two-motor driving operation, but also realizes fault-tolerant operation of the two motors when one phase winding of the motors or one bridge arm of the inverter fails. 本发明公开了种双电机容错型逆变器，包括直流母线、电容、六个开关管桥臂、两个电机和两个电机中性点连接线。第电机的三相分别与第桥臂、第二桥臂、第三桥臂的中点连接，第二电机的三相分别于第四桥臂、第五桥臂、第六桥臂的中点连接，两个电机的中性点互相连接。本发明提供的用于双电机容错型逆变器拓扑结构，除了双电机正常驱动运行外，还实现了在电机的相绕组或逆变器的个桥臂发生故障时双电机的容错运行。