مشخصات پژوهش

عنوان	Enhanced Controller for a Four-leg Inverter Operating in a Stand-alone Microgrid with Unbalanced Loads
نوع پژوهش	مقاله چاپ‌شده
کلیدواژه‌ها	Control Dynamic performances Four-leg inverter Microgrid Voltage unbalance
چکیده	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 the centralized utility grid. In most of LV microgrids, three-phase four-wire distribution systems are used to supply both single- and three-phase loads. Unequal distribution of loads can result in voltage unbalance problems. The use of the four-leg inverter is one of the best solutions for providing a neutral current path and compensating unbalanced load conditions in stand-alone LV microgrids. This paper proposes a fast control technique to compensate unbalanced voltage conditions for a four-leg inverter operating in a stand-alone LV microgrid. The suggested technique provides the current controller’s orthogonal component without introducing any additional dynamics or distortions. The major benefits of the recommended per-phase control technique over conventional orthogonal signal generation (OSG) methods are enhanced steady-state and dynamic performances as well as independency to the system parameters. Several simulation results are provided to confirm the superior performance of the suggested methods.
پژوهشگران	سجاد باقری (نفر چهارم)، علی اصغر قدیمی (نفر سوم)، محمد رضا میوه (نفر دوم)، عفت ایوبی (نفر اول)