Single-Stage AC/DC Boost–Forward Converter With High Power Factor and Regulated Bus and Output Voltages

Lu, Dylan Dah-Chuan; Iu, Herbert Ho-Ching; Pjevalica, V.

doi:10.1109/tie.2009.2014304

Cited by 89 publications

(15 citation statements)

References 22 publications

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“…They are able to provide high input power factor. Still they suffer from high circulating currents, high dc bus voltages or discontinuous currents [12][13][14].…”

Section: B Two Switch Topologiesmentioning

confidence: 99%

A new single phase single stage power factor corrected converter

Sandhya

David

2014

2014 International Conference on Circuits, Power and Computing Technologies [ICCPCT-2014]

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The paper deals with a new single stage three level ac-dc converter which performs both power factor correction and voltage regulation in a single stage. The proposed converter has two separate controllers, one for power factor correction and the other for regulating the output voltage. A comprehensive review of the existing single stage topologies has been carried out. Then the operating principle, control scheme and the design of the new converter are presented. The proposed converter is having an input power factor close to unity and better voltage regulation compared to the conventional ac-dc converter topologies. Simulation results obtained from a 1.35kW model are also presented to show the feasibility of the new converter.

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“…They are able to provide high input power factor. Still they suffer from high circulating currents, high dc bus voltages or discontinuous currents [12][13][14].…”

Section: B Two Switch Topologiesmentioning

confidence: 99%

A new single phase single stage power factor corrected converter

Sandhya

David

2014

2014 International Conference on Circuits, Power and Computing Technologies [ICCPCT-2014]

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“…2). By taking into account (5), the differential equation (3) corresponding to the bus voltage becomes…”

Section: Average Modeling Of the Single-stage And Two-stage Pfc mentioning

confidence: 99%

“…PFC circuits are suitable practical power supplies for regulating an output voltage while providing a near unity power factor (PF) [1]- [3]. Although a variety of circuit topologies and control methods has been developed for both single-stage [2], [3] and two-stage [ applications, the boost converter with average current mode (ACM) working in continuous conduction mode (CCM) is commonly chosen for many medium-and high-power applications [5].…”

Section: Introductionmentioning

confidence: 99%

Asymptotic Slow-Scale Stability Boundary of PFC AC–DC Power Converters: Theoretical Prediction and Experimental Validation

Aroudi

Orabi

Haroun

et al. 2011

IEEE Trans. Ind. Electron.

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A unified approach for the stability analysis of both preregulator and two-stage power factor correction (PFC) ac-dc converters is presented. Practical and accurate analytical expressions for the stability boundary are obtained by studying the dynamics of the first harmonic component. The resulting model of this dynamics has an equilibrium point at the origin of the harmonic state space. In the case of a stable equilibrium point, the first-order component converges to zero, and the system oscillates at twice the line frequency. If the equilibrium point loses stability, another equilibrium point depending on high-order harmonics will be reached while the real system will exhibit a period-doubling phenomenon leading to subharmonic oscillations. It is demonstrated that the stability boundaries depend on the power level. Numerical simulations and experimental results in both a preregulator and a complete two-stage PFC converter validate the approach.

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“…Generally, compared with passive PFC converters, active ones can achieve a higher PF and a smaller size. There are different topologies and controls to implement active PFC techniques [1][2][3][4][5][6][7][8][9][10][11], among which, the boost converter is a representative topology. Depending on the inductor current to be continuous or not, the boost PFC converter can be designed to operate in three modes: continuous current mode (CCM), critical current mode (CRM) and discontinuous current mode (DCM).…”

Section: Introduction mentioning

confidence: 99%

A Novel Control Scheme of DCM Boost PFC Converter

Yao

et al. 2015

IEEE Trans. Power Electron.

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The discontinuous current mode (DCM) boost power factor correction (PFC) converter features a zero-current turn-on for the switch, no reverse recovery in diode and constant frequency operations. However, when the duty cycle is constant in a line cycle, the input current contains rich 3 rd harmonic which has a phase difference of π with respect to the fundamental component. The harmonic results in not only a lower PF but also larger peak and RMS current values of the main power components, which lead to a higher conduction and switching turn-off loss. In this paper, a variable duty cycle control (VDC) scheme is proposed to make the input current contain only 3 rd harmonic which is in phase with fundamental component, while remaining the same PF at a certain input voltage as that of constant duty cycle control (CDC). A method of fitting the duty cycle is further proposed for simplifying the circuit implementation. The efficiency is improved as the critical inductance increases and the peak and RMS current values consequently decrease. The proposed method also achieves an output voltage ripple or the output storage capacitance reduction. The experimental results from a prototype of 120W are given to verify the effectiveness of the proposed method.Index Terms-Boost PFC, discontinuous current mode, 3 rd harmonic, efficiency.  Manuscript . His main research interests include power factor correction converters, renewable energy generation system and motor driving control.

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Single-Stage AC/DC Boost–Forward Converter With High Power Factor and Regulated Bus and Output Voltages

Cited by 89 publications

References 22 publications

A new single phase single stage power factor corrected converter

A new single phase single stage power factor corrected converter

Asymptotic Slow-Scale Stability Boundary of PFC AC–DC Power Converters: Theoretical Prediction and Experimental Validation

A Novel Control Scheme of DCM Boost PFC Converter

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