ABSTRACT:
A multilevel boost PFC (Power Factor Correction)
rectifier is presented in this paper controlled by cascaded controller and
multicarrier pulse width modulation technique. The presented topology has less
active semiconductor switches compared to similar ones reducing the number of
required gate drives that would shrink the manufactured box significantly. A
simple controller has been implemented on the studied converter to generate a
constant voltage at the output while generating a five-level voltage waveform
at the input without connecting the load to the neutral point of the DC bus
capacitors. Multicarrier PWM technique has been used to produce switching
pulses from control signal at a fixed switching frequency. Multi-level voltage
waveform harmonics has been analyzed comprehensively which affects the harmonic
contents of input current and the size of required filters directly. Full
experimental results confirm the good dynamic performance of the proposed
five-level PFC boost rectifier in delivering power from AC grid to the DC loads
while correcting the power factor at the AC side as well as reducing the
current harmonics remarkably.
KEYWORDS:
1. Multilevel Converter
2. Active Rectifier
3. Multicarrier PWM
4. Cascaded Control
5. Power Quality
SOFTWARE: MATLAB/SIMULINK
EXPECTED SIMULATION RESULTS:
Fig. 2. Experimental results from steady-state operation of the rectifier
Fig. 3. Experimental results during 50% increase in the load
Fig. 4. Experimental results during AC source voltage variation
Fig. 5. Experimental results during 25% raise in the DC voltage
reference
CONCLUSION:
REFERENCES:
[1] B. Singh, B. N. Singh, A. Chandra, K. Al-Haddad, A. Pandey, and D. P. Kothari, "A review of three-phase improved power quality AC-DC converters," Industrial Electronics, IEEE Transactions on, vol. 51, no. 3, pp. 641-660, 2004.
[2] M. Mobarez, M. Kashani, and S. Bhattacharya, "A Novel Control Approach For Protection of Multi-Terminal VSC Based HVDC Transmission System Against DC Faults," IEEE Trans. Ind. Applications, vol. PP, no. 99, pp. 1-1, 2016.
[3] H. Mortazavi, H. Mehrjerdi, M. Saad, S. Lefebvre, D. Asber, and L. Lenoir, "A Monitoring Technique for Reversed Power Flow Detection With High PV Penetration Level," IEEE Trans. Smart Grid, vol. 6, no. 5, pp. 2221-2232, 2015.
[4]
H. Abu-Rub, M. Malinowski, and K. Al-Haddad, Power electronics for renewable
energy systems, transportation and industrial applications: John Wiley
& Sons, 2014.
[5]
H. Vahedi, H. Y. Kanaan, and K. Al-Haddad, "PUC converter review:
Topology, control and applications," in IECON 2015-41st Annual
Conference of the IEEE Industrial Electronics Society, Japan, 2015, pp.
4334-4339.