Title :
A digital controller for single-phase UPS inverters to reduce the output DC component
Author :
Pinheiro, Humberto ; Botterón, Fernando ; Pinheiro, José R. ; Hey, Hélio L. ; Gründling, Hilton A.
Author_Institution :
Power Electron. & Control Res. Group, Federal Univ. of Santa Maria, Brazil
Abstract :
This paper proposes a new two layers digital controller for PWM inverters, which significantly reduces the output DC voltage component. It is suitable for low cost PWM inverters where analog-to-digital converters and digital pulse width modulators with small numbers of bits are used. The controller description and design are presented. Experimental results on a 5 kVA set-up validate the theoretical analysis carried out.
Keywords :
PWM invertors; analogue-digital conversion; control engineering computing; control system synthesis; digital control; power engineering computing; uninterruptible power supplies; 5 kVA; DC voltage component; PWM inverters; analog-to-digital converters; digital controller; digital pulse width modulators; single-phase UPS inverters; Circuit faults; Costs; Digital control; Low pass filters; Power electronics; Pulse inverters; Pulse width modulation converters; Pulse width modulation inverters; Uninterruptible power systems; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual
Print_ISBN :
0-7803-8399-0
DOI :
10.1109/PESC.2004.1355612
