• Maria Pius Pallan
• Jisi N.K

Maintaining power quality is an important part which has to be considered while the microgrid system is connected to the main grid. The introduction of power electronics devices and electrical loads with unbalanced nonlinear currents has degraded the power quality in the power distribution network. This paper presents a dual voltage source inverter (DVSI) scheme to improve the power quality and reliability of the microgrid system. The proposed system is comprised of two inverters, main voltage source inverter (MVSI) and auxiliary voltage source inverter (AVSI) which enables it to inject real power, and reactive, harmonic, unbalanced load compensations respectively. The control algorithms are developed using instantaneous symmetrical component theory (ISCT) to operate DVSI in grid sharing and grid injecting modes. The method has the advantages of increased reliability, reduction in filter size, improved flexibility, and better utilization of microgrid power. The performance of the system is validated through MATLAB simulations.

Grid-connected inverter, instantaneous symmet -rical component theory (ISCT), microgrid, power quality

"Power Quality Enhancement Using Dual Voltage Source Inverter", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.4, Issue 5, page no.151-160, May-2017, Available :http://www.jetir.org/papers/JETIR1705035.pdf

"Power Quality Enhancement Using Dual Voltage Source Inverter", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.4, Issue 5, page no. pp151-160, May-2017, Available at : http://www.jetir.org/papers/JETIR1705035.pdf