ABSTRACT:
The
paper evolves a mechanism for improving the input power factor of an AC-DC-DC
conversion system. It involves the process of shaping the input current wave to
phase align with the input supply through a process of error compensation. The
methodology includes cohesive formulation to arrive at nearly unity power
factor and enjoy the etiquettes of output voltage regulation. The theory assuages
to subscribe the benefits for the entire range of operating loads. It
eliminates the use of passive components and fortifies the principles of pulse
width modulation (PWM) for realizing the change in duty cycle. The MA TLAB based
simulation results arbitrate the viability of the proposed approach and exhibit
its suitability for use in real world applications.
KEYWORDS:
1. Ac-dc
converter
2. Power
factor
3. THD
4. Voltage
regulation
SOFTWARE: MATLAB/SIMULINK
CIRCUIT DIAGRAM:
Figure
1. Power Factor Correction Control of Boost Converter
EXPECTED SIMULATION RESULTS:
Figure
2. Steady State Input AC Voltage and Input AC Current Waveform
Figure
3. Steady State Rectified DC Voltage and Rectified DC Current Waveform
Figure
4. Steady State Regulated DC Output Voltage and Regulated DC Output Current
Waveform
Figure
5. Power Factor Measurement of the Proposed Power Factor Correction Boost
Converter
Figure
6. FFT Spectrum of the AC input current of Proposed Power Factor Correction
Boost Converter
Figure
7. Transient response of Input AC Voltage and Input AC Current Waveform
Figure
8. Transient Response of Rectified DC Voltage and Rectified DC Current Waveform
Figure
9. Transient Response of Regulated DC Output Voltage and Regulated DC Output
Current Waveform
Figure
10. Power Factor Measurement of the Proposed Power Factor Correction Boost
Converter at transient condition
CONCLUSION:
A
single stage power factor correction strategy has been proposed for full bridge
diode rectifier fed boost converter to support a 400W, lA DC load. The
suitability of boost converter for power factor correction has been illustrated
by the elimination of input capacitor filter and low output ripple factor. The
formulated control design has been effectively orchestrated to correct the
power factor in addition providing good voltage regulation. The transient performance
has been portrayed to up-heave the strength of the control structure with an
adequate output regulation and effective harmonic elimination. The control plan
has been nurtured to standardize the THD level of the system that prevents the
adverse effects of harmonics being injected in the grid. The exclusion of
additional passive components and interleaving configuration has been fostered
to reduce the size thus making it more adaptive to low cost compact electronic
applications with high standards .
REFERENCES:
[1]
M. Milanovic, F . Mihalic, K. Jezernik and U. Milutinovic," Single phase
unity power factor correction circuits with coupled inductance," Power
Electronics Specialists Conference, 1992, vol.2, pp. l077-1082.
[2]
M. Orabi and T Ninomiya, "Novel nonlinear representation for two stage power-factor-correction
converter instability," IEEE International Symposium on Industrial
Electronics, 2003, voU, pp- 270-274.
[3]
Yu Hung, Dan Chen, Chun-Shih Huang and Fu-Sheng Tsai, "Pulse-skipping
power factor correction control schemes for ACIDC power converters,"
Fourth International Conference on Power Engineering, Energy and Electrical
Drives (POWERENG), 2013, pp-I087-1092.
[4]
Lu, D.D. -C, H.H.-C. lu, V. Pjevalica, "A Single-Stage AC/DC Converter
With High Power Factor, Regulated Bus Voltage, and Output Voltage," Power
Electronics, IEEE Transactions on, vo1.23, issue. I, pp. 218-228, Jan. 2008.
[5]
M. Narimani and G. Moschopoulos, "A New Single-Phase SingleStage Three-Level
Power Factor Correction AC-DC Converter," Power Electronics, IEEE Transactions
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