@article{Umamaheswararao M., Mercy Rosalina K., Lakshminarayana P._2021, title={Comparison of Circuit Breakers with Series Active Power filters in solar based microgrid protection }, url={http://www.thedesignengineering.com/index.php/DE/article/view/1830}, abstractNote={<p>In this work, three DG s are having different ratings, solar and wind sources are acted as major sources and fuel cells acted as back up source. Here microgrid transmission line voltage levels are 10.5 KV, this 10.5 KV line voltages are connected to three phase distribution power transformers the secondary voltage of distribution transformer is three phase voltage. These three-phase voltages are giving to the loads. The synchronization process of three DG’S with the main grid is to be done using phase locked loop circuits (PLL). If the microgrid is in healthy condition the circuit breakers are in the closed position, whenever the fault will come the circuit breaker contacts are separated with the support of relay and it allows two to three cycles of fault currents allows into the system. These two cycles of error currents create some damage to the structure and its operating time is high. Series Active Power Filter has one hysteresis controller it always compares the transmission line operating voltage with the reference voltage. If any difference occurs between two voltages, then controller sends a control signal (corresponding to that difference) to the inverter, here inverter directs that corresponding ac voltage to the transmission line at that situation voltages are settled.</p&gt;}, journal={Design Engineering}, author={Umamaheswararao M., Mercy Rosalina K., Lakshminarayana P.}, year={2021}, month={Jun.}, pages={1357 - 1365} }