Title :
Wireless parallel operation control of a two-module UPS system for equivalent load sharing
Author :
Koo, T.G. ; Byun, Y.B. ; Joe, K.Y. ; Seo, J.I. ; Kim, D.H. ; Kim, C.U.
Author_Institution :
Sch. of Electr. & Electron. Eng., Yeungnam Univ., Kyung Buk, South Korea
Abstract :
In this paper, a wireless parallel operation control of two uninterruptible power supply (UPS) modules without any interconnection lines is presented. Owing to the use of active power and reactive power as control variables, the characteristics of output powers according to amplitude and phase differences between output voltages of two UPS modules are analyzed. Simulation results under different line impedance demonstrate the feasibility of the wireless parallel operation. Finally, experimental results are presented to verify the theoretical discussion with two three-phase 20 kVA UPS modules employed TMS320C32, a kind of real time digital signal processor (DSP)
Keywords :
control system analysis; control system synthesis; digital signal processing chips; equivalent circuits; power control; uninterruptible power supplies; voltage control; 20 kVA; TMS320C32 real-time digital signal processor; active power; amplitude differences; control variables; equivalent load sharing; phase differences; reactive power; simulation; two-module UPS system; wireless parallel operation control; Control systems; Digital signal processing; Frequency; Impedance; Integrated circuit interconnections; Power engineering and energy; Power generation; Power system interconnection; Uninterruptible power systems; Voltage control;
Conference_Titel :
Industrial Electronics Society, 2000. IECON 2000. 26th Annual Confjerence of the IEEE
Conference_Location :
Nagoya
Print_ISBN :
0-7803-6456-2
DOI :
10.1109/IECON.2000.972355
