676 / 2019-04-18 16:35:16

Efficient Voltage Profile Based Model-Predictive Control Strategy for Stand-Alone Wind-Integrated Hybrid Microgrid Systems

renewable energy,DC-Microgrids,performance analysis

Future power system depends on penetrating more renewable energy to fulfill the drastic increase in energy demand with reduced carbon emission. Wind energy integration is increasing in the worldwide each year. To efficiently investigate a quality voltage for AC loads under wind speed variations, a combined control strategy is proposed in this paper. It consists of PI and model predictive control (MPC) for the three-phase rectifier and interlinking inverter, respectively. The controlled rectifier ensures a constant DC-bus voltage under variable wind speed, while MPC is used to control output AC load voltage under abrupt load changes. The proposed MPC strategy for output voltage is compared with the conventional method-based PI controllers. The presented results ensure the effectiveness of the proposed approach with 0.24% THD for the AC output voltage.