In high-capacity storage systems, parallel-operated three-level ANPC converters are widely employed and the application of hybrid devices makes the efficiency higher. In parallel systems, the suppression of zero-sequence circulating currents(ZSCCs) and the balancing of neutral-point(NP) potential need to be considered at the same time. In this paper, the models of ZSCCs and NP currents are first analyzed and corresponding control strategy are presented. Furthermore, a control strategy is proposed to continuously balance the two control objects and finally achieve effective control of both by adjusting only the action time of redundant small vectors. The strategy is easy to implement and makes it very convenient to expand the system with N(N ≧2) converters. Finally, the effectiveness of the proposed strategy is verified in two parallel hybrid 3L ANPC converters.