DocumentCode :
1897094
Title :
A line-interactive single-phase to three-phase converter system
Author :
Machado, Ricardo Q. ; Buso, Simone ; Pomilio, José A.
Author_Institution :
Sch. of Electr. & Comput. Eng., State Univ. of Campinas, Brazil
Volume :
1
fYear :
2004
fDate :
20-25 June 2004
Firstpage :
753
Abstract :
This paper describes a line-interactive single-phase to three-phase converter. A typical application is in rural areas supplied by the single-wire with earth return system. The traditional objective of feeding a three-phase induction motor is not any more the main concern for such conversion. Due to the evolution of the agro business, some of the local loads (as electronic power converters, computers, communication equipments, etc.) require high quality power, intended as sinusoidal, symmetrical, and balanced three-phase voltage. Additionally, to maximize the power got from the feeder, the system provides a unitary power factor to the grid. A three-phase VSI-PWM converter is used for this purpose. The power converter does not process all the load power as in the conventional solutions, but only the fraction necessary to regulate the three-phase bus voltage. As it does not manage active power, it is not necessary to have a source at the dc side. The control strategy, design highlights, and experimental results are presented.
Keywords :
PWM invertors; PWM power convertors; digital control; distribution networks; earthing; induction motors; power conversion harmonics; power factor correction; power supply quality; voltage control; PWM inverter; VSI-PWM converter; agricultural business; communication equipment; computer; digital control; earth return system; electronic power converter; feeder; power quality; rural electrification; single-phase to three-phase converter; single-wire system; three-phase induction motor; unitary power factor; voltage regulation; Active filters; Application software; Earth; Induction motors; Low pass filters; Power harmonic filters; Power quality; Pulse width modulation inverters; Reactive power; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual
ISSN :
0275-9306
Print_ISBN :
0-7803-8399-0
Type :
conf
DOI :
10.1109/PESC.2004.1355843
Filename :
1355843
Link To Document :
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