Converter paralleling is one of the main approaches to expanding the capacity of converters.This paper analyzes the factors affecting the consistency of module output current in parallel three-phase connected converters.Based on the modeling of the multi-converter paralleled system，expressions of the relationship between current consistency and relative module parameters are obtained through theoretical analysis and mathematical derivation.Simulations and experimental results on an active power filter paralleled by two260kVA converters have verified the correctness of the theoretical analysis.