Power factor correction AC-DC boost converter using PI-hysteresis current control (original) (raw)
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This paper presents various current control techniques of an ac-dc boost converter to obtain nearest unity power factor (UPF). Single phase high power factor rectification is the most frequently accomplished using a dual boost converter. This converter reshapes distorted input current waveform to approximate a sinusoidal current that is in phase with the input voltage. There are several current control techniques for achieving a sinusoidal input current waveform with low distortion. Two typical techniques for power factor correction (PFC) are pulse width mode control (PWMC) and hysteresis current mode control (HCMC) is very useful for power factor correction. These control techniques are evaluated based on control strategy, circuit components, and total harmonic distortion of input current. The single phase ac-dc dual boost converter is operated in continuous conduction mode (CCM). Both control techniques are simulated in Matlab/Simulink program.
The Analysis of Ac-DC Boost PFC Converter Based on Peak and Hysteresis Current Control Techniques
This paper presents two current control techniques of an ac-dc boost converter to obtain unity power factor (PF). Single phase high power factor rectification is the most frequently accomplished using a boost converter. This converter reshapes distorted input current waveform to approximate a sinusoidal current that is in phase with the input voltage. There are several current control techniques for achieving a sinusoidal input current waveform with low distortion. Two typical techniques for power factor correction (PFC) are peak current mode control (PCMC) and hysteresis current mode control (HCMC). These control techniques are evaluated based on control strategy, circuit components, and total harmonic distortion of input current. The single phase ac-dc boost converter is operated in continuous conduction mode (CCM). Both control techniques are simulated in Matlab/Simulink program.
This paper presents two current control techniques of an ac-dc boost converter to obtain unity power factor (PF). Single phase high power factor rectification is the most frequently accomplished using a boost converter. This converter reshapes distorted input current waveform to approximate a sinusoidal current that is in phase with the input voltage. There are several current control techniques for achieving a sinusoidal input current waveform with low distortion. Two typical techniques for power factor correction (PFC) are peak current mode control (PCMC) and hysteresis current mode control (HCMC). These control techniques are evaluated based on control strategy, circuit components, and total harmonic distortion of input current. The single phase ac-dc boost converter is operated in continuous conduction mode (CCM). Both control techniques are simulated in Matlab/Simulink program.
International Journal of Advance Research and Innovative Ideas in Education, 2019
The present scenario is trending towards quality power supply. There are different parameters which decides the power quality like continuity, wave shape, wave distortion, ripples, flickering, harmonics etc. In this paper the method of reduction of total harmonic distortion for AC – to- DC converter with improved power factor by implementing a boost converter along with the PID controller. To prolong the life time of electronic circuits the electrolytic capacitor is excluded as the electrolytic capacitors weakens with time. The power-factor-correction (PFC) circuit for ac-to-dc converters is based on boost conversion with power decoupling. The controlled conventional machine is hired to reallocate the excessive electricity to the inefficient side of the ac side through decoupling the input power into a dc aspect . Instead of using a large electrolytic capacitor with the boost converter , the conventional energy law follows the track of minimum errors in Vref and Pref which is config...
Simple controller for single-phase power factor correction rectifier
IET Power Electronics, 2010
This study proposes a simple low-cost modulating duty cycle analogue controller to reduce line frequency harmonics for high power factor boost rectifier. The proposed method eliminates the need for current sensing, and simultaneously offers the performance results comparable to those of continuous conduction mode (CCM). This scheme also maintains the simplicity comparable to that of discontinuous conduction mode (DCM). Only the output voltage and the rectified input voltage are monitored to vary the duty cycle of the boost switch within a line cycle so that the third-order harmonic, which is the lowest order harmonic of the input current, is reduced. As a result, the total harmonic distortion (THD) of the line current and thus the input power factor is improved. Moreover, the rectifier shows a good transient performance where the converter's output voltage overshoots during input voltage/load transients is reduced. The proposed method is developed for constant switching frequency boost rectifier. Simulation and experimental results are presented to verify the effectiveness of the proposed control method.
Input Power Factor Correction in Single phase AC-DC Circuit using Parallel Boost Converter
International Journal for Research in Applied Science and Engineering Technology, 2018
AC to DC Converter is the most important part of any power supply unit used in all electronic equipments which form a considerable part on utility. Power Electronic equipments inject lower order harmonics in the utility. As a result THD is high and input power factor is low. Thus there are many power factor correction schemes being implemented too many power factor near to unity. In this paper a hysteresis control scheme is proposed for Boost Converter. The efficiency is improved using soft switching techniques such as ZVS and ZCS.
New recommendations and feature standards have increased the interest in power factor correction circuits to get sinusoidal line current. The analysis of the major-component ratings of the continuous current mode (CCM) single-stage power factor-correction (PFC) and the CCM boost two-stage PFC converters is given. High-performance regulation with satisfactory line-current harmonics is demonstrated with conventional duty-ratio control. Zero voltage switching, zero current switching, active snubber approaches employed to reduce the reverse recovery losses. By using line frequency commutated techniques and enabling window control Electromagnetic interference noise (EMI) is reduced and soft switching is obtained by reducing driving losses. By using asymmetrical pulse width modulation techniques the total harmonic distortions are reduced to less than 3.8% and the efficiency can be obtained above 96.5% with the network. Cool MOSFETs and SiC diode used to reach the desired efficiency with competitive price. This method is verified by experimental results obtained from a 500W prototype.
Fuzzy Logic Based Power Factor Correction AC- DC Converter
A DC-link voltage is widely used in industrials and domestic's application. Simple diode rectifier's bridges are used to create dc voltage link. A diode rectifier has a high distortion input currents wave form and low power factor. A single phase AC–DC boost converter is realized to replace the conventional diode bridge rectifier. Fuzzy logic and hysteresis control techniques is implemented to improve the performance of the boost converter. The current loop is being controlled by using a PI, and hysteresis controllers. The fuzzy controller is applied to DC voltage loop circuit to get better performance. The results show that the fuzzy controller gives well controller. The controller is verified via MATLAB/Simulink.
A Proficient AC/DC Converter with Power Factor Correction
Dc power supplies are extensively used inside most of electrical and electronic appliances such as in computers, televisions, audio sets and others. Power supplies make the load compatible with its power source. The presence of nonlinear loads results into low power factor operation of the power system. Several techniques for power factor correction and harmonic reduction have been reported and a few of them have gained greater acceptance over the others. In this paper a bridgeless power factor correction boost converter is proposed which results in improved power factor and reduced harmonics content in input line currents as compared to conventional boost converter topology. Bridgeless power factor correction boost converter eliminates the line-voltage bridge rectifier in conventional boost power factor correction converter, so that the conduction loss is reduced.