677 / 2019-04-18 16:41:24

Maximum Power Extraction with Enhancement of Terminal Load Voltage Profile for Standalone Wind Generating Systems Based on Model Predictive Control

renewables,hybrid AC/DC microgrid,energy storage

Remote areas require reliable solutions for fulfilling electricity needs. Wind energy utilization is increasing worldwide with wind-battery-load topology as a cost-effective solution for remote area electrification and standalone hybrid microgrid clusters. Intelligent control of voltage source inverter (VSI) ensures high power quality with efficient voltage and frequency profile for sensitive and critical loads. While maximum wind power extraction provides reliable solution with battery energy storage (BSS). In this paper, finite control set model predictive voltage control (FCS-MPVC) is proposed for wind-battery based standalone microgrid to regulate the terminal load voltage in terms of amplitude and frequency. Control hierarchy consists of DC boost convert, DC-DC buck boost converter (bidirectional) and VSI. Wind maximum power is extracted by using DC-boost converter and DC bus voltage is stabilized by using bidirectional battery converter. FCS-MPC strategy is used for primary control, which includes power droop control, three phase reference generator, and inner control loop. Fluctuating wind under variable AC load conditions are simulated.