Title :
A new space vector based control method for UPS systems powering nonlinear and unbalanced loads
Author :
Jensen, Uffe Borup ; Enjeti, Prasad N. ; Blaabjerg, Frede
Author_Institution :
AXA Power A/S, Odense, Denmark
fDate :
6/22/1905 12:00:00 AM
Abstract :
In this paper a new real time space vector based control strategy is presented for 3-phase UPS systems powering nonlinear and unbalanced loads. The proposed control strategy generates the inverter reference and gating signals in closed loop and guarantees high quality output voltages at the load terminals. The approach, which is implemented on a DSP, adapts to a wide variation of nonlinear and unbalanced load conditions without specific knowledge of output filter (LC) component values. Analysis and experimental results on a 10 kVA system are presented. The results show that the output voltage is restored at heavy nonlinear and unbalanced load
Keywords :
digital signal processing chips; load (electric); uninterruptible power supplies; voltage control; 3-phase UPS systems; DSP; UPS systems; gating signals; high quality output voltages; inverter reference; load terminals; nonlinear loads; output filter component values; space vector based control method; unbalanced loads; voltage control; Control systems; Nonlinear control systems; Power harmonic filters; Power supplies; Pulse width modulation inverters; Real time systems; Rectifiers; Space technology; Uninterruptible power systems; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2000. APEC 2000. Fifteenth Annual IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5864-3
DOI :
10.1109/APEC.2000.822611