ABSTRACT:
In this paper the 5-level Packed U-Cell (PUC5) inverter
is reconfigured with two identical DC links operating as an active power filter
(APF). Generally, the peak voltage of an APF should be greater than the AC
voltage at the point of common coupling (PCC) to ensure boost operation of the
converter in order to inject harmonic current into the system effectively;
therefore, full compensation can be obtained. The proposed modified PUC5 (MPUC5)
converter has two equally regulated separated DC links, which can operate at no
load condition useful for APF application. Those divided DC terminals
amplitudes are added at the input of the MPUC5 converter to generate a boosted
voltage that is higher than the PCC voltage. Consequently, the reduced DC links
voltages are achieved since they do not individually need to be higher than the
PCC voltage due to the mentioned fact that their summation has to be higher
than PCC voltage. The voltage balancing unit is integrated into modulation
technique to be decoupled from the APF controller. The proposed APF is practically
tested to validate its good dynamic performance in harmonic elimination, AC
side power factor correction, reactive power compensation and power quality
improvement.
KEYWORDS:
1.
Active Power
Filter
2.
PUC5
3.
Harmonic
Elimination
4.
Power Factor
Correction
5.
Power Quality
SOFTWARE: MATLAB/SIMULINK
CONCLUSION:
REFERENCES:
[1]
B. Singh, A. Chandra, and K. Al-Haddad, Power Quality: Problems and
Mitigation Techniques: John Wiley & Sons, 2014.
[2]
S. Rahmani, K. Al-Haddad, H. Y. Kanaan, and B. Singh, "Implementation and
simulation of modified PWM with two current control techniques applied to
single-phase shunt hybrid power filter," IEE Proc. Electric Power
Applications, vol. 153, no. 3, pp. 317-326, 2006.
[3]
H. Zhang, S. J. Finney, A. Massoud, and B. W. Williams, "An SVM algorithm
to balance the capacitor voltages of the three-level NPC active power
filter," IEEE Trans. Power Electron., vol. 23, no. 6, pp. 2694-2702,
2008.
[4]
S. Du, J. Liu, and J. Lin, "Hybrid cascaded H-bridge converter for harmonic
current compensation," IEEE Trans. Power Electron., vol. 28, no. 5,
pp. 2170-2179, 2013.
[5]
M. Sharifzadeh, H. Vahedi, R. Portillo, M. Khenar, A. Sheikholeslami, L. G.
Franquelo, et al., "Hybrid SHM-SHE Pulse Amplitude Modulation for
High Power Four-Leg Inverter," IEEE Trans. Ind. Electron., vol. 63,
no. 11, pp. 7234-7242, 2016.