Bridgeless single‐phase step‐down PFC converter

Malekanehrad, Mahdi; Adib, Ehsan

doi:10.1049/iet-pel.2015.1036

Cited by 17 publications

(7 citation statements)

References 29 publications

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“…When the circuit operates in steady state, it can be seen that from (25), the output voltage ripple varies from −I o 2ω L C o to I o 2ω L C o and the frequency is twice the utility frequency.…”

Section: Design Of Output Capacitormentioning

confidence: 99%

“…There are many other existing papers investigating bridgeless single-stage step-down PFC [22][23][24][25][26][27][28][29][30][31] circuit structures, which are summarized in Table 3. From Table 3, it can be seen that the proposed circuit has a lower number of output inductors and capacitors as well as the same number of switches, magnetic elements, and diodes, as compared to the existing bridgeless buck PFC circuits.…”

Section: Comparison Between the Proposed And The Existingmentioning

confidence: 99%

“…The studies [19][20][21][22][23][24][25][26][27][28][29][30][31] present buck PFC rectifiers, which can convert a higher input AC voltage into a lower DC voltage. The advantage of this circuit is that the voltage stress of the power switch is the maximum value of the input voltage, and compared with the boost PFC rectifier, the power switch can be selected with a smaller withstand voltage, and thus the cost is cheaper.…”

Section: Introductionmentioning

confidence: 99%

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Single-Stage Step-Down Power Factor Corrector without Full-Bridge Rectifier

Hwu,

Shieh,

2024

Applied Sciences

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In this paper, a single-stage step-down power factor corrector without a full-bridge rectifier is developed, which is designed to operate in discontinuous conduction mode (DCM). In terms of control, the DCM has the advantages of simple control and easy realization, no slope compensation, zero current switching, and no diode reverse current. By sampling the output voltage and using the voltage-follower control to generate the necessary control force to drive the power switch, not only can the output voltage be stabilized at the desired value, but also the input current can be, as much as possible, in the form of a sinusoidal waveform and can follow the phase of the input voltage. Moreover, the harmonic distortion meets the requirements of the IEC6100-3-2 Class D harmonics standard, and, thus, the proposed rectifier is appropriate for the computer, computer monitor, and television receiver. Eventually, by means of mathematical deductions, simulations by PSIM version 9.1, and experimental results, the feasibility and effectiveness of the proposed circuit can be verified.

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Section: Design Of Output Capacitormentioning

confidence: 99%

Section: Comparison Between the Proposed And The Existingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Single-Stage Step-Down Power Factor Corrector without Full-Bridge Rectifier

Hwu,

Shieh,

2024

Applied Sciences

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“…Thus, dead angle problem must be eliminated [13]. Several topologies are introduced in [14–20] to solve dead angle problem but all of them suffer from the hard switching condition. In [21–25] buck‐boost PFC is used, hence there is no dead angle problem.…”

Section: Introductionmentioning

confidence: 99%

High performance single stage power factor correction circuit

Ghazali

Adib

2021

IET Power Electronics

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Here, a new single stage single switch soft switching PFC (power factor correction) converter is presented and analysed. The proposed converter combines buck AC‐DC converter and forward DC‐DC converter and applies an auxiliary circuit to eliminate input current dead angle. Furthermore, soft switching is attained and switching losses are eliminated resulting in high efficiency. Another merit of the proposed converter is the partial direct transmission of input power to the output that helps to improve efficiency. Experimental results are presented which justify the above mentioned points and show less than 5% THD in the nominal load. Comparison with other similar single stage PFC converters is performed and shows the proposed converter provides the lowest THD while high efficiency is attained.

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“…Power factor correction (PFC) converters have been widely used in many applications like LED drivers, server power supplies, and onboard battery chargers, to achieve high power factor (PF) and low harmonic distortion [1][2][3][4][5][6][7][8][9][10]. Generally, PFC converters can be divided into two categories: active one and passive one.…”

Section: Introductionmentioning

confidence: 99%

Analysis and design of the DCM operation boost PFC converter with magnetic control

Wei

Luo

Wang

et al. 2019

IET Power Electronics

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In this study, a novel control scheme for the discontinuous conduction mode (DCM) operation boost power factor correction (PFC) converter is proposed. Instead of adopting constant duty cycle (CDC) control, variable duty cycle control or frequency control, the magnetic control or variable inductor control is adopted to regulate the output voltage, so CDC and switching frequency can be implemented for the switch. The operation principles of the proposed control scheme are discussed in details, and the analysis of the input current, power factor, boundary condition and design considerations are presented. In addition, the modelling of the variable inductor and the DCM operation boost PFC converter with variable inductor are derived in detail, by linearising the non-linear components, the model of the DCM operation boost PFC converter with the proposed control scheme can be obtained, and the design procedures of the PI controller are presented. Finally, a 70 W experimental prototype is built to verify the theoretical analysis and the effectiveness of the proposed control scheme.

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Bridgeless single‐phase step‐down PFC converter

Cited by 17 publications

References 29 publications

Single-Stage Step-Down Power Factor Corrector without Full-Bridge Rectifier

Single-Stage Step-Down Power Factor Corrector without Full-Bridge Rectifier

High performance single stage power factor correction circuit

Analysis and design of the DCM operation boost PFC converter with magnetic control

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