A fast-transient current control strategy for three-phase four-wire cascaded H-bridge inverter is presented for versatile operation of grid-connected battery energy storage systems. The proposed control method enables both symmetric and asymmetric inverter operation requirements of a stationary on-grid battery energy storage system by employing three independent pairs of synchronous reference frame PI controllers in each phase of the three-phase four-wire inverter. The independent single-phase grid synchronizations in the control structure enable reliable operation of fault-free phase(s) during grid fault conditions. The proposed control system characterizes fast-transient current tracking in asymmetric control mode. It can exchange active and/or reactive power with independent single-phase loads and/or generations connected to the three-phase system, by following given current references. MATLAB and Simulink based simulations are used to evaluate the system performance and verified by hardware experiments.


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    Title :

    A Fast-transient Current Control Strategy for Three-phase Four-wire Modular Multilevel Inverter in Grid-tied Battery Energy Storage System


    Contributors:


    Publication date :

    2019-05-01


    Size :

    508886 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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