TY  - JOUR
T1  - Feeding Unbalanced Loads by Controlling Four-Leg Inverters Using Resonant Controllers
AU - Zeinoddini, Amineh AU - Afjei, Ebrahim 
JO  - Journal of Engineering and Applied Sciences
VL  - 11
IS  - 3
SP  - 598
EP  - 609
PY  - 2016
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2016.598.609
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2016.598.609
KW  - Four-leg inverters
KW  -multilevel inverters
KW  -resonant controllers
KW  -unbalanced loads
KW  -validate
AB  - In recent years the number of distributed generators which are connected to a network or directly feed local loads is growing. Most of these generators need power inverters for their power transmission. On the other hand, in a power system most of the times, the loads are dynamic and change over time or even in some cases, they might become unbalanced. In this study, we have chosen a switching method presented for four-leg multilevel inverters. The method is based on the switching of two-level inverters which has a simple structure and generality for applying to any topology with any number of levels. Then, a technique for controlling inverters connected to unbalanced loads is presented based on resonant controllers. The presented method benefits from a very simple structure and can be implemented in a synchronous reference frame. At the end, a number of simulations are performed in MATLAB in order to validate the effectiveness of the proposed method and the results are presented.
ER  -