International Journal on "Technical and Physical Problems of Engineering" (IJTPE) THE ANALYSIS OF AC-DC BOOST PFC CONVERTER BASED ON PEAK AND HYSTERESIS CURRENT CONTROL TECHNIQUES (original) (raw)
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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 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.
Power factor correction AC-DC boost converter using PI-hysteresis current control
International Journal of Power Electronics and Drive Systems, 2023
The AC line input voltage is frequently rectified by single-phase diode rectifiers and filtered using sizable electrolytic capacitors. The capacitor draws current in brief pulses, so harmonics distort the line current, resulting in high losses. Harmonics and line current distortions harm the unity power factor and efficiency. This article adopts a simple single-stage AC-DC converter with a high-power factor and low total harmonic distortion. The PI hysteresis current control was utilized to reduce the total harmonic distortion and increase the power factor at full load. The PI controller was added to the outer voltage loop to regulate the output voltage. Ziegler-Nichol's tuning method was used to determine the controller gain levels. Simulation results were obtained for the AC-DC converter at a constant switching frequency to show the benefits of the proposed control method, which has a low total harmonic distortion and a high-power factor compared with cases without a controller. The proposed control method is accurate and efficient for achieving the power factor correction converter. Besides, the proposed control was stable during dynamic and steady-state responses.
Comprehensive review of high power factor ac-dc boost converters for PFC applications
International Journal of Electronics, 2014
High power factor rectifiers have been consolidated as an effective solution to improve power quality indices in terms of input power factor correction, reduction in the total harmonic distortion of the input current and also regulated dc voltages. Within this context, this subject has motivated the introduction of numerous converter topologies based on classic dc-dc structures associated with novel control techniques, thus leading to the manufacturing of dedicated integrated circuits that allow high input power factor by adding a front-end stage to switch-mode converters. In particular, boost converters in continuous current mode (CCM) are widely employed since they allow obtaining minimised electromagnetic interference levels. This work is concerned with a literature review involving relevant ac-dc single-phase boost-based topologies with high input power factor. The evolution of aspects regarding the conventional boost converter is shown in terms of improved characteristics inherent to other ac-dc boost converters. Additionally, the work intends to be a fast and concise reference to single-phase ac-dc boost converters operating in CCM for engineers, researchers and experts in the field of power electronics by properly analysing and comparing the aforementioned rectifiers.
Design and Simulation of PFC Circuit for AC/DC Converter Based on PWM Boost Regulator
In this paper a simple power factor correction PFC circuit was designed, simulated and tested for AC/DC converter which generates input current harmonics due to its non-linear characteristics. PFC was achieved through current harmonics mitigation by using PWM boost regulator. The circuit utilizes the charging and disc arching increments of boost inductor current to shape a sinusoidal input current. Inductor current was controlled by means of PWM controller. The controller accepts two feed back signals, the first is the inductor current and the other is the output voltage of the AC/DC converter. The simulation results of fast fourier transform FFT show a grate reduction in current harmonic which in turns tends to a grate improvement in power factor.
A Novel Power Factor Correction Technique for a Boost Converter
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.
Design and Implementation of Single-Phase Boost PFC Converter
Journal of Engineering
In this paper, a single-phase boost type ac-dc converter with power factor correction (PFC) technique is designed and implemented. A current mode control at a constant switching frequency is used as a control strategy for PFC converter. The PFC converter is a single-stage singleswitch boost converter that uses a current shaping technique to reshape the non-sinusoidal input current drawn by the bulky capacitor in the conventional rectifier. This technique should provide an input current with almost free-harmonics, comply with the IEC61000-3-2 limits, and a system operates with near unity power factor. The other function of the boost converter that should beaccomplished is to provide a regulated DC output voltage. The complete designed system is simulated in MATLAB/SIMULINK and a hardware prototype has been built using analog devices. Simulation results and experimental results are presented to validate the proposed system.
Power quality in terms of power factor, THD and precisely regulated output voltage are the major key factors for efficient operation of power electronic converters. This paper presents an easy and effective active wave shaping control scheme for the pulsed input current drawn by the uncontrolled diode bridge rectifier thereby achieving power factor nearer to unity and also satisfying the THD specifications. It also regulates the output DC-bus voltage. CCM boost power factor correction with constant frequency operation features smaller inductor current ripple resulting in low RMS currents on inductor and switch thus leading to low electromagnetic interference. The objective of this work is to develop an active PFC control circuit using CCM boost converter implementing variable duty cycle control. The proposed scheme eliminates inductor current sensing requirements yet offering good performance and satisfactory results for maintaining the power quality. Simulation results have been presented which covers load changes also.
Comparative study of high power factor boost rectifiers in continuous conduction mode
2014 11th IEEE/IAS International Conference on Industry Applications, 2014
This work presents a comparative study of singlephase boost-based ac-dc converters applied to power factor correction. Three structures are chosen for this purpose and analyzed in detail e.g. the classical boost converter, the bridgeless boost converter, and the boost converter based on the three-state switching cell (3SSC) operating in continuous conduction mode (CCM). The aforementioned topologies are briefly revised so that they can be properly designed and validated considering results obtained from simulation tests, where aspects such as the input current, regulated output voltage, harmonic content, and dynamic response are investigated.
Power Factor Correction (PFC) of AC-DC system using boost-converter
2014
This is to certify that the thesis entitled "POWER FACTOR CORRECTION (PFC) OF AC-DC SYSTEM USING BOOST-CONVERTER" submitted by Pratap Ranjan Mohanty, in partial fulfillment of the requirements for the award of Master of Technology in the Department of Electrical Engineering, with specialization in "Power Electronics and Drives" at National Institute of Technology, Rourkela is an authentic work carried out by his under my supervision and guidance. To the best of my knowledge, the matter embodied in the thesis has not been submitted to any other University/Institute for the award of any Degree or Diploma.