Publication

Abstract : With the increased penetration of renewable energy sources (RES), it is expected that these alternative energy resources will reveal improved dynamic performance when connected with grid/load. Power electronic converters (PEC) act as an interfacing devices between RES and grid/load. Among many PEC, DC-DC boost converter is used to step-up the DC power level based on the load requirement. In boost converter, maintain a stability is one of the major concern when the system is under transient condition. In this paper, frequency response based lag, lead and lead-lag controllers are proposed in order to maintain the system stability with required phase margin (PM), cross-over frequency and bandwidth. A fuzzy based non-linear controller is also proposed and the obtained results are compared with lag, lead and lead-lag controllers. It shows that, fuzzy logic controller exposed good performance with respect to settling time, rise time and peak overshoot than linear controllers.