Enhanced controller for a four-leg inverter operating in a stand-alone microgrid with unbalanced loads

<span lang="EN-US">Stand-alone low voltage (LV) microgrids supplying small local loads far from the utility grid are becoming an increasingly popular alternative to a total reliance on centralized grid. In most of LV microgrids, three-phase four-wire distribution systems used supply both single- and loads. Unequal can result in unbalance problems. The use four-leg inverter is one best solutions for providing neutral current path compensating unbalanced load conditions stand-alone microgrids. This paper proposes fast control technique compensate operating microgrid. suggested provides controller’s orthogonal component without introducing any additional dynamics or distortions. major benefits recommended per-phase over conventional signal generation (OSG) methods enhanced steady-state dynamic performances as well independency system parameters. Several simulation results provided confirm superior performance methods.</span>