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http://dx.doi.org/10.6113/TKPE.2011.16.5.466

Sinusoidal Current Control of Single-Phase PWM Converters under Voltage Source Distortion Using Composite Observer  

Nguyen, Thanh Hai (영남대 전기공학과)
Lee, Dong-Choon (영남대 전기공학과)
Lee, Suk-Gyu (영남대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.16, no.5, 2011 , pp. 466-476 More about this Journal
Abstract
In this paper, a high-performance current control for the single-phase PWM converter under distorted source voltages is proposed using a composite observer. By applying the composite observer, the fundamental and high-order harmonic components of the source voltage and current are extracted without a delay. The extracted fundamental component is used for a phase-lock loop (PLL) system to detect the phase angle of the source voltage. A multi-PR (proportional-resonant) controller is employed to regulate the single-phase line current. The high-order harmonic components of the line current are easily eliminated, resulting in the sinusoidal line current. The simulation and experimental results have verified the validity of the proposed method.
Keywords
Composite observer; PLL; PR controller; single-phase PWM converters;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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