A Novel Single-Phase Soft-Switched Rectifier With Unity Power Factor and Minimal Component Count

2004 ◽  
Vol 51 (3) ◽  
pp. 566-576 ◽  
Author(s):  
G. Moschopoulos ◽  
P.K. Jain
Keyword(s):  
Power Factor ◽  
Single Phase ◽  
Unity Power Factor ◽  
Minimal Component

scholarly journals Performance Between PFC Cuk and Bridgeless PFC Cuk Converter with Various Output Voltages

2019 ◽  
Vol 8 (2S2) ◽  
pp. 41-46
Keyword(s):  
Low Power ◽  
Power Factor ◽  
Single Phase ◽  
Harmonic Distortion ◽  
Input Current ◽  
Unity Power Factor ◽  
Cuk Converter ◽  
Maximum Current ◽  
Simulation Results ◽  
Power Application

This paper presents about the comparison between single-phase PFC Cuk converter and bridgeless PFC (BPFC) Cuk converter for low power application. This study attempts to investigate the characteristics of conventional and bridgeless PFC Cuk converter structures with three different output voltages and verified by the simulation results. The BPFC Cuk converter provides a lower Total Harmonic Distortion (THD) of input current than the conventional PFC Cuk converter. However, the conventional PFC Cuk converter has advantage of less maximum current stress at components compared to the BPFC Cuk converter. Conventional and BPFC Cuk converter can achieve an approximately unity power factor (PF).

scholarly journals Artificial neural network based unity power factor corrector for single phase DC-DC converters

2020 ◽  
Vol 10 (4) ◽  
pp. 4145
Author(s):  
Hussain Attia
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Phase Shift ◽  
Power Factor ◽  
Duty Cycle ◽  
Single Phase ◽  
Unity Power Factor ◽  
Grid Voltage ◽  
Grid Current ◽  
Artificial Neural

Due to the negative effects of the non-linear semiconductor devices and the passive electrical components (inductor and capacitor) in the converter circuits, and that are deteriorating the power factor (PF) and total harmonics distortion (THD) of grid current, this study proposes a novel unity PF correction controller based on a new algorithm of neural network to improve the performance of a single phase boost DC-DC converter with respect to the mentioned concerns. The controller guarantees stable load voltage. The PF corrector, firstly measures the phase shift between grid voltage and grid current waveforms, then through a new artificial neural network (ANN) algorithm, a suitable duty cycle is predicted to guide and control the converter to reduce the phase shift between grid voltage and grid current as possible to have maximum PF which is unity PF, and to improve the THD level of grid current. The proposed system is simulated and evaluated via Simulink of MATLAB, the simulation results are collected at constant duty cycle and at controlled duty cycle through the proposed PF controller using different loads. The presented PF controller guarantees the unity power factor, and enhances the grid alternating current THD.

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