for Energy Storage System
Jung,AhJin
(SupervisorChoi,SeWan)
Dept.ofControlandInstrumentationEng.
Graduate School Seoul National University of
ScienceandTechnology
Recently,integrating are new able energy source,such as solar energy or
wind power, to distributed generation microgrid is widely developed
nowadays.The cost and efficiency of the system may be taking into
accountas an important consideration.A large powersystem consists of
several parallel inverters which work redundantly,in order to keep the
reliability of the system. In addition, several same capacity parallel
inverters may be operated as modular inverters,that may have lower
operation cost.In modular inverter operation,the load sharing between
inverters must be considered. Furthermore, the transition between
grid-connected and stand-alone mode may causing bad influence to the
critical load.
In this paper,a master-slave control algorithm with seamless transfer
during mode transition of modular parallel inverter as PCS for ESS is
proposed.
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