Key points are not available for this paper at this time.
The 21 papers in this special section focus on uninterruptible power supply (UPS) systems. They are organized according to the following six topics: control of parallel UPS systems; UPS inverter control; double-conversion UPS; line-interactive UPS; battery management; and dynamic UPC. The papers are summarized here.
Guerrero et al. (Fri,) studied this question.