Introduction - If you have any usage issues, please Google them yourself
This paper presents a dual voltage source inverter
(DVSI) scheme to enhance the power quality and reliability of
the microgrid system. The proposed scheme is comprised of two
inverters, which enables the microgrid to exchange power generated
by the distributed energy resources (DERs) and also to
compensate the local unbalanced and nonlinear load. The control
algorithms are developed based on instantaneous symmetrical
component theory (ISCT) to operate DVSI in grid sharing and
grid injecting modes. The proposed scheme has increased reliability,
lower bandwidth requirement of the main inverter, lower
cost due to reduction in filter size, and better utilization of microgrid
power while using reduced dc-link voltage rating for the
main inverter. These features make the DVSI scheme a promising
option for microgrid supplying sensitive loads. The topology and
control algorithm are validated through extensive simulation and
experimental results.