An alternative approach to synthesizing single-stage converters with power-factor-correction feature

Wu, T.-F.; Yu, T.-H.; Liu, Yuan-Chuan

doi:10.1109/41.778227

Cited by 14 publications

(6 citation statements)

References 40 publications

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“…Usually, the dc bus capacitor voltage must be limited below 450V for universal line applications (V in, rms = 100-240V). To overcome the above drawbacks of the single-stage scheme, several converters with input current shaping were presented in [8] and [9] using the dither rectifier concept. Fig.…”

Section: Introductionmentioning

confidence: 99%

Forward-based AC/DC converter with quasi-active input current shaping technique

Athab

2011

2011 IEEE Energy Conversion Congress and Exposition

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This paper presents a forward converter with a quasi-active input current shaping (ICS) scheme. A high frequency pulsating voltage source derived from a cascaded dc/dc forward converter is added to serve as a magnetic switch and drive an inductor for input current shaping. As a result, the input power factor is improved due to the extended conduction angle of the conventional diode rectifier with large output capacitor. It eliminates the use of active switch and control circuit for power factor correction (PFC), which results in improved efficiency and lower cost. To achieve low harmonic content, the input inductor is designed to operate in discontinuous current mode (DCM). The new converter satisfies the input current harmonics regulation IEC61000-3-2 Class D and limits the dc bus capacitor voltage below 450V for universal line applications. In addition the added winding provides a direct power transfer path from the input to the load, which can improve the conversion efficiency. Operating principles, analysis, and simulation/experimental results of the proposed converter are presented.

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Section: Introductionmentioning

confidence: 99%

Forward-based AC/DC converter with quasi-active input current shaping technique

Athab

2011

2011 IEEE Energy Conversion Congress and Exposition

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“…Usually, in S 2 scheme, high PF is guaranteed by operating the PFC boost cell in discontinuous current mode (DCM), while the fast response output regulation is achieved by the dc/dc cell. Many S 2 converters have been presented in literature [5]–[14]. Although the single‐stage scheme is attractive in low cost and low power applications due to its simplified power stage and control circuit, major issues, such as low efficiency and limited to low power applications, and high dc bus voltage stress, still exist .…”

Section: Introductionmentioning

confidence: 99%

“…Besides, the DCM input current requires a large EMI filter to get rid of the high frequency switching noise generated by the converter. To overcome the disadvantages of the single‐stage scheme, many converters with input current shaping are presented [7]–[8] in which a high frequency ac voltage source is connected in series with the rectified input voltage to shape the input current. Some alternative designs [15]–[18] using additional coupled feedback windings can reduce the dc bus capacitor voltage, but they also result in a dead angle in the input current so that the input current distortion is increased.…”

Section: Introductionmentioning

confidence: 99%

Quasi‐active power factor correction on flyback‐based dc/dc converter

Athab

2011

Circuit Theory & Apps

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This paper presents a novel input current shaper based on a quasi-active power factor correction (PFC) scheme. In this method, high power factor and low harmonic content are achieved by providing an auxiliary PFC circuit with a driving voltage which is derived from a third winding of the transformer of a cascaded dc/ dc flyback converter. It eliminates the use of active switch and control circuit for PFC. The auxiliary winding provides a controlled voltage-boost function for bulk capacitor without inducing a dead angle in the line current. Since the dc/dc converter operates at high switching frequency, the driving voltage is also of high switching frequency, which results in reducing the size of the magnetic components. Operating principles, analysis and experimental results of the proposed method are presented.

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“…Em [10], [11] é feita uma revisão dos principais retificadores monofásicos de único estágio, enquanto em [12] são estudadas as principais estruturas trifásicas, ambos discutindo diferentes métodos e configurações com correção de fator de potência. Os principais trabalhos relacionados à topologias CA-CC isoladas são apresentadas a seguir: em [13] é apresentada uma topologia de quatro quadrantes, composta por um conversor matricial.…”

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“…10. Análise dos ângulos de comutação.Para os sentidos adotados a comutação não dissipativa ZVS (zero voltage switching), ocorre quando o ângulo  S1a é menor que o ângulo  S1a .…”

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Conversor Ca-cc Trifásico Bidirecional de Único Estágio com Correção de Fator de Potência e Isolado em Alta Frequência

Almeida¹,

Júnior²

2016

Eletrônica de Potência

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Resumo-Este artigo apresenta o estudo e a implementação de um novo conversor CA-CC trifásico bidirecional de único estágio com correção de fator de potência e isolado em alta frequência. O conversor proposto é concebido utilizando-se o conceito de interleaving, e no dual active bridge (DAB) com controle phase-shift. São desenvolvidas análises teóricas baseadas no uso do modelo fundamental e utilizando-se o conceito da modulação AM DSB (Amplitude Modulation with Double Side-Band), sendo validado por simulações numéricas. Resultados experimentais obtidos com um protótipo de 1,5 kW são apresentados a fim de validar o estudo da topologia proposta.

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An alternative approach to synthesizing single-stage converters with power-factor-correction feature

Cited by 14 publications

References 40 publications

Forward-based AC/DC converter with quasi-active input current shaping technique

Forward-based AC/DC converter with quasi-active input current shaping technique

Quasi‐active power factor correction on flyback‐based dc/dc converter

Conversor Ca-cc Trifásico Bidirecional de Único Estágio com Correção de Fator de Potência e Isolado em Alta Frequência

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