ABSTRACT:
In this paper, a universal active power filter is
proposed for harmonic and reactive power compensation in the single-phase to
three-phase systems. The proposed configuration solves a typical problem found
in remote (or rural) applications, where only a single-phase grid is available
and there is a demand to supply three-phase loads. A suitable control strategy
is presented to regulate the load voltage, the power factor, and to minimize the
voltage and current harmonics simultaneously. Simulated and experimental
results are also presented.
KEYWORDS:
1.
Active power
filter
2.
Harmonic distortion compensation
3.
Reactive power
compensation
4.
Single-phase to three-phase conversion
SOFTWARE: MATLAB/SIMULINK
BLOCK DIAGRAM:
CIRCUIT DIAGRAM:
Fig.
2. Proposed single-phase to three-phase active power filter.
EXPECTED SIMULATION RESULTS:
Fig. 3.
Experimental results. (a) Voltage and current of the grid (top), dc-link
voltage (middle) and load voltages (bottom). (b) Load current (top) and grid
current (bottom).
Fig. 4.
Experimental results in the time (top) and in the frequency (bottom) domains.
(a) Grid current. (b) Load current. (c) Grid voltage. (d) Load voltage.
CONCLUSION:
A
universal active power filter for harmonic and reactive power compensation in
single-phase to three-phase systems was presented. The model of the system was
derived, and comparing this kind of solution (single-phase to three-phase universal
power filter) with the conventional solution (ac-dc-ac single-phase to
three-phase converters) favors the proposed one, in relation to: switches
losses minimization and switches power ratings reduction. A suitable control
strategy, including the PWM technique, has been developed as well. The
experimental results demonstrate the feasibility of the proposed system.
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