Parallel control realization method based on cascade high-voltage inverter load distribution

The invention relates to a parallel control realization method based on cascade high-voltage inverter load distribution. A parallel control system adopted in the parallel control realization method comprises a plurality of parallel-connected cascade high-voltage inverters, wherein input ends of the parallel-connected cascade high-voltage inverters are arranged on the same power grid, and output ends of the parallel-connected cascade high-voltage inverters are respectively connected to a motor through electric reactors. Load current control is achieved through a load distribution method, synchronous output of the parallel-connected cascade high-voltage inverters is achieved through communication between a master-slave control mode and a CAN bus, proportional allocation of output power of the cascade high-voltage inverters is achieved, and therefore the parallel connection of the cascade high-voltage inverters can be achieved. Through the adoption of the parallel control realization method, the capacities of the cascade high-voltage inverters in the system are not needed to be uniform. Therefore, the parallel control realization method can flexibly improve the power grade of a parallel system and open up the application scope of a high-reliability and large current-capacity high-power high-voltage frequency conversion system.