Title :
Four wire single-phase to three-phase system for rural distribution network
Author :
Bellar, M.D. ; Aredas, M. ; Neto, J. L Silva ; Rolim, L. G Barbosa ; Miranda, Ud.A. ; Fernandes, R.M. ; Aquino, A.F.C. ; Petersen, V.C.
Author_Institution :
FEN-DETEL, UERJ, Rio de Janeiro, Brazil
Abstract :
This work presents the experimental development of a four-wire single-phase to three-phase static converter for rural distribution system. The converter topology is based on a front-end full-controlled PWM rectifier that handles the DC bus voltage regulation as well as improves the input power factor correction. In order to provide the three-phase four-wire system, a four-legged PWM voltage source inverter (VSI) is used at the output. The rectifier-inverter control strategy has been implemented in a digital processor (DSP), where a proposed PLL algorithm performs the rectifier synchronism. Component specification guidelines and control strategies are described. Complete models are implemented in an electromagnetic transient simulation package (PSCAD/EMTDC™), where the converter is connected to a rural distribution network and is supplying three-phase and single-phase loads. Simulation results show that this converter can ride through a typical voltage sag condition that is very often in rural areas. The converter topology is composed of 12 IGBTs and can be implemented by two off-the-shelf three-phase PWM inverters. This availability can offer significant cost reduction. Experimental results are provided.
Keywords :
EMTP; PWM invertors; PWM power convertors; digital signal processing chips; insulated gate bipolar transistors; power distribution control; power system CAD; rectifying circuits; voltage control; DC bus voltage regulation; DSP; IGBT; PWM inverters; converter topology; digital signal processor; electromagnetic transient simulation package; four wire single-phase to three-phase system; four-legged PWM voltage source inverter; front-end full-controlled PWM rectifier; power factor correction; rectifier-inverter control strategy; rural distribution network; static converter; voltage sag condition; Digital signal processing; Network topology; Power factor correction; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Rectifiers; Voltage control; Voltage fluctuations; Wire;
Conference_Titel :
Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual
Print_ISBN :
0-7803-8399-0
DOI :
10.1109/PESC.2004.1355568