Proceedings Article•
A novel zero-voltage-switching PWM boost rectifier with high power factor and low conduction losses
01 Jan 2003-pp 224-229
TL;DR: In this article, a single-phase high power factor rectifier is proposed for PWM rectification, which uses a single converter instead of the conventional configuration composed of a four-diode front-end rectifier followed by a boost converter.
Abstract: This paper proposes a new single-phase high power factor rectifier, which features regulation by conventional PWM, soft commutation and instantaneous average line current control. A new zero-voltage-switching pulse-width modulation (ZVS-PWM) auxiliary circuit is configured in the presented ZVS-PWM rectifier to perform ZVS in the main switches and the passive switches, and ZCS in the auxiliary switch. Furthermore, soft commutation of the main switch is achieved without additional current stress by the presented ZVS-PWM auxiliary circuit. A significant reduction in the conduction losses is achieved, since the circulating current for the soft switching flows only through the auxiliary circuit and a minimum number of switching devices are involved in the circulating current path, and the proposed rectifier uses a single converter instead of the conventional configuration composed of a four-diode front-end rectifier followed by a boost converter. Nine transition states for describing the behavior of the ZVS-PWM rectifier in one switching period are described. A prototype rated at 1 KW, operating 80 kHz, with an input ac voltage of 220 V/sub rms/ and an output voltage 400 V/sub dc/ has been implemented in laboratory. An efficiency of 96.7% and power factor over 0.99 has been measured. Analysis, design, and the control circuitry are also presented in this paper.
Citations
More filters
TL;DR: In this article, the authors present an assessment of current and future trend of non-isolated DC-DC converters with various parameters and are analyzed using MATLAB Simulink.
Abstract: At present, power shortage became a huge problem in many countries, due to cumulative load demand which cannot be met by Conventional Energy Power Generation. These challenging situations lead researchers to focus on non-conventional energy sources to extract Electric Power. In order to extract the electric power, DC–DC converters are adopted at the primary stage to increase the efficiency Power Conversion. This paper presents an assessment of current and future trend of non-isolated DC–DC converters (Such as Buck–boost, Cuk and Sepic) with various parameters and are analyzed using MATLAB Simulink. Based on the simulation result, the performances of non-isolated converters are evaluated and are helps to determine the suitable converter with a particular power rating for renewable energy based applications. In addition, the state space mathematical modeling of DC–DC converters are also presented which will be useful in the design of controllers for different non isolated DC–DC converters.
125 citations
07 Mar 2011
TL;DR: This paper discuses the reduced high conduction loss and improved efficiency of the input rectifier-bridge of a conventional boost PFC converter by designing the necessary techniques and methodology, so that the overall Power Factor can be improved to the expectation.
Abstract: This paper discuses the reduced high conduction loss and improved efficiency of the input rectifier-bridge of a conventional boost PFC converter By designing the necessary techniques and methodology, the overall Power Factor (PF) can be improved to the expectation The cause of having low PF for a diode-capacitor type of rectifiers is related to non-linearity of the input current Method of re-shaping the input current waveform to be similar pattern as the sinusoidal input voltage is done by the Boost converter and the related controls that act as a Power Factor Correction (PFC) circuit The results of the designed system were compared with the boost rectifier without PFC control Higher efficiency can be achieved by using the bridgeless boost topology In this paper, digital simulation of bridgeless PFC boost rectifiers, also called dual boost PFC rectifiers, is presented Performance comparison between the conventional PFC boost rectifier and the bridgeless PFC boost rectifier is performed
15 citations
01 Jan 2013
TL;DR: 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.
Abstract: 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 non linear 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.
8 citations
16 May 2008
TL;DR: In this paper, a high efficiency soft-switched Boost voltage-doubler Converter for Power Factor Pre-regulator is proposed, which can perform soft switching in two main switches and the passive switches, and zero-current switching in the auxiliary switch.
Abstract: A high efficiency soft-switched Boost voltage-doubler Converter for Power Factor Pre-regulator is proposed in this paper. The topology can perform soft-switching in the two main switches and the passive switches, and zero-current switching in the auxiliary switch. Furthermore, soft commutations of the two main switches are achieved without additional current stress by the presented PWM soft-switched auxiliary circuit. A significant reduction in the conduction losses is achieved, since the circulating current for the soft switching flows only through the auxiliary circuit and a minimum number of switching devices are involved in the circulating current path, and the proposed rectifier is suit for low line input and high power applications. Computer simulation and a prototype rated at 600 W, operating 50 kHz, with an input AC voltage of 120 Vrms and an output voltage of 400 Vdc has been implemented in the laboratory. A high efficiency up to 97% and power factor over 0.997 has been measured.
1 citations
02 Feb 2023
TL;DR: In this article , an improved Particle Swarm Optimization (PSO) algorithm is presented that will enhance the supply side Power Quality (PQ) and yield regulated DC voltage at the output side.
Abstract: This research has concentrated on topologies of DC- DC converter for Power Factor Correction for DC power supplies. The foremost objective of this effort is to improve a Bridge Less Zeta Power Factor Correction (PFC) converter implement with fractional order PID (FOPID) controller. It can be adjusted using the Improved Particle Swarm Optimization (PSO) algorithm is presented that will enhance the supply side Power Quality (PQ) and yield regulated DC voltage at the output side. To establish the FOPID controllers, an updated PSO technique is employed and position of the particle is ensured within the designated hunt areas with momentum factor. The control system based on the fractional PID algorithm outperforms the particle swarm optimization approach and the genetic algorithm. The right controller design for the converter ensures excellent performance, which is tested using simulation data. The recommended Bridge Less Zeta converter is evaluated for DC load voltage regulation under various load power and supply voltage fluctuations.
References
More filters
26 Jun 1989
TL;DR: In this article, a novel active input power factor correction method for power supplies with three-phase front-end diode rectifiers is proposed and analyzed and the implementation of this method requires the use of an additional single switch boost chopper.
Abstract: A novel active power factor correction method for power supplies with three-phase front-end diode rectifiers is proposed and analyzed. The implementation of this method requires the use of an additional single switch boost chopper. The combined front-end converter draws sinusoidal AC currents from the AC source with nearly unity input power factor while operating at a fixed switching frequency. It is shown that when the active input power factor correction stage is also used to regulate the converter DC bus voltage, the converter performance can improve substantially in comparison with the conventional three-phase AC-to-DC converters. These improvements include component count reduction, simplified input synchronization logic requirements, and smaller filter refractive components. Theoretical results are verified experimentally. The proposed method has the disadvantage of substantially increasing the current stresses of the switching devices and the high-frequency ripple content of the prefiltered AC input currents. >
526 citations
TL;DR: In this paper, a closed-loop active current wave-shaping technique was proposed for input power factor correction, where nearly sinusoidal input currents are obtained at constant switching frequencies.
Abstract: A novel input power factor correction method that uses a closed-loop active current waveshaping technique is presented. The novel feature of the method is that nearly sinusoidal input currents are obtained at constant switching frequencies. Moreover, the method exhibits instantaneous current control, which results in very fast response and increased switch reliability. Selected predicted system performance and design methods were verified experimentally on a 1 kVA laboratory prototype. >
180 citations
20 Jun 1994
TL;DR: In this paper, a single-phase high power factor rectifier, which features regulation by conventional PWM, soft commutation and instantaneous average line current control, has been proposed to achieve an efficiency of 97.8 % at 1.6 kW.
Abstract: This paper introduces a new single-phase high power factor rectifier, which features regulation by conventional PWM, soft commutation and instantaneous average line current control. Furthermore, thanks to the use of a single converter, instead of the conventional configuration composed of a four-diode front-end rectifier followed by a boost converter, a significant reduction in the conduction losses is achieved. A prototype rated at 1.6 kW, operating at 70 kHz, with an input AC voltage of 220 Vrms and an output voltage of 400 V/sub DC/ has been implemented in the laboratory. An efficiency of 97.8 % at 1.6 kW has been measured. Analysis, design, and the control circuitry are also presented in the paper. >
139 citations
07 Mar 1993
TL;DR: In this paper, a single phase AC to DC rectifier with input power factor correction is proposed, which has many advantages which include fewer semiconductor components, simplified control, high performance features and satisfaction of IEC 555 harmonic current standards.
Abstract: A high performance single phase AC to DC rectifier with input power factor correction is proposed. The proposed approach has many advantages which include fewer semiconductor components, simplified control, high performance features and satisfaction of IEC 555 harmonic current standards. Simulation and experimental results obtained on a laboratory prototype are discussed. >
133 citations
22 Jun 1997
TL;DR: In this paper, a single-phase high-power-factor (HPF) pulsewidth-modulated (PWM) boost rectifier featuring soft commutation of the active switches at zero current (ZC) is presented.
Abstract: This paper presents a novel single-phase high-power-factor (HPF) pulsewidth-modulated (PWM) boost rectifier featuring soft commutation of the active switches at zero current (ZC) It incorporates the most desirable properties of conventional PWM and soft-switching resonant techniques The input current shaping is achieved with average current mode control and continuous inductor current mode This new PWM power converter provides ZC turn on and turn off of the active switches, and it is suitable for high-power applications employing insulated gate bipolar transistors (IGBTs) The principle of operation, the theoretical analysis, a design example and experimental results from a laboratory prototype rated at 1600 W with 400 VDC output voltage are presented The measured efficiency and the power factor were 962% and 099%, respectively, with an input current total harmonic distortion (THD) equal to 394%, for an input voltage with THD equal to 38%, at rated load
43 citations