TY - JOUR N2 - Abstract Though there are many strategies to control single-phase uninterruptible power supply (UPS) inverters, they suffer from some drawbacks, the main being complexity. This paper proposes a simple dual-loop controller for the single-phase UPS inverter with the LC filter. The suggested control scheme uses the capacitor current as the feedback signal in the inner current loop. No fictitious phase generation or reference frame transformations are required, and simple proportional gains are employed as both voltage and current regulators. A feedforward of the derivative of the output voltage is also proposed, which significantly improves the performance of the closed loop control system. Then, based on the model of the inverter with the proposed control strategy, a simple and systematic design procedure is presented. Finally, the theoretical achievements are supported by extensive simulations. L1 - http://journals.pan.pl/Content/83926/PDF/18_paper.pdf L2 - http://journals.pan.pl/Content/83926 PY - 2014 IS - No 2 EP - 373 DO - 10.2478/bpasts-2014-0037 A1 - Monfared, M. VL - 62 DA - 2014 T1 - A simplified control strategy for single-phase UPS inverters SP - 367 UR - http://journals.pan.pl/dlibra/publication/edition/83926 T2 - Bulletin of the Polish Academy of Sciences Technical Sciences ER -