PublisherIEEE Press. Institute of Electrical and Electronics Engineers
Rights accessRestricted access - publisher's policy
Master-Slave configuration is a suitable alternative
to droop control method used in microgrids. In this configuration,
only one inverter is the master, while the others are slaves. The
slave inverters are always current controlled whereas the master
inverter should have two selectable operation modes: current
controlled, when the microgrid is connected to the grid; and
voltage controlled, when it is operating in island mode. In gridconnected
mode, the master needs a synchronization system to
perform the accurate control of its delivered power, and, in
island mode, it needs a voltage reference oscillator that serves
as a reference to the slave inverters. Based on the master-slave
concept, this paper proposes a single system that perform both
functions, i.e., it can act as a synchronization system or as
a voltage reference oscillator depending on an input selector.
Moreover, the system ensures a smoothly transition between
the two operation modes, guaranteeing the safety operation of
the microgrid. Experimental results are provided to confirm the
effectiveness of the proposed system.
CitationAzevedo, G. [et al.]. Safe transient operation of microgrids based on master-slave configuration. A: IEEE Energy Conversion Congress and Exposition. "3rd Annual IEEE Energy Conversion Congress & Exposition". Phoenix, AR: IEEE Press. Institute of Electrical and Electronics Engineers, 2011, p. 2191-2195.
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