Title :
Parallel three-phase UPS inverters with a new control technique
Author :
Xinchun, Lin ; Xikun, Chen ; Yong, Kang ; Shanxu, Duan ; Jian, Chen
Author_Institution :
Dept. of Electr. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
This paper presents a new control technique which allows the parallel operation of two three-phase UPS modules, this scheme can achieve excellent characteristics both in steady states and in transient states. Experiments are presented to verify the theoretical discussion with two three-phase 60 kVA UPS modules employing TMS320F240.
Keywords :
digital control; digital signal processing chips; electric current control; invertors; reactive power control; uninterruptible power supplies; 220 V; 380 V; 430 V; 50 Hz; 60 kVA; 8 kHz; TMS320F240; current-sharing control; digital control; parallel operation; parallel three-phase UPS inverters; steady states; three-phase UPS modules; three-phase active power control; three-phase reactive power control; transient states; Equivalent circuits; Frequency synchronization; Inverters; Phase locked loops; Power system reliability; Reactive power; Reactive power control; Steady-state; Uninterruptible power systems; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2002. pesc 02. 2002 IEEE 33rd Annual
Print_ISBN :
0-7803-7262-X
DOI :
10.1109/PSEC.2002.1022569
