Comparison of advantages and disadvantages of traditional three-phase permanent magnet synchronous motor and dual three-phase permanent magnet synchronous motor

1, dual three-phase can use low power level devices to achieve low-voltage high-power speed regulation. The same power of the three-phase drive system if modified into a multi-phase system, the single-phase supply voltage will drop, especially suitable for electric ship propulsion system, electric locomotive traction system and other power supply voltage itself is limited to high-power applications.

2, dual three-phase has a strong fault-tolerant ability, improved reliability. Due to the redundancy of the number of phases of the multi-phase motor, when a multi-phase motor or multi-phase inverter phase or phases of the failure, you can use the appropriate control strategy, so that the motor in the case of phase breaks down the power to run without having to restart or shut down.