Application of Droop Control Strategy in Power Electronic Control
In systems where multiple devices of the same type work together,droop control strategy is widely used as an important method to ensure system stability and power distribution balance.The onboard equipment of railway vehicles is diverse and the load is dispersed.Parallel connection can effectively improve the redundancy and reliability of their power supply system.This article introduces the whole vehicle parallel structure and parallel operation principle of the CRH3 EMU auxiliary inverter and CRH2 EMU auxiliary rectifier parallel power supply system.Based on the output structure of the auxiliary inverter and auxiliary rectifier,the composition and influencing factors of the output current are calculated and analyzed,and the application of the droop control strategy in the parallel control of the CRH3 EMU auxiliary inverter and CRH2 EMU auxiliary rectifier parallel power supply system is explained.By explaining and analyzing the application of the droop control strategy in different types of rail vehicles,AC/DC voltage systems,and different control methods of software and hardware,the basic principles,applicable scenarios,and application significance of the droop control strategy are summarized.
droop control strategyauxiliary converterauxiliary rectifierparallel power supply systempower balance
万方数据
维普
