A Novel bridgeless SEPIC Converter for Power Factor Correction

Meenadevi, R.; Premalatha, L.

doi:10.1016/j.egypro.2017.05.220

Cited by 19 publications

(13 citation statements)

References 4 publications

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“…When switch S is turned on, the energy is stored in Table 1 shows the specifications to design the passive elements, which are the capacitors and inductors. On the basis of the modes of operations, the values of passive elements are estimated based on the DCM condition [5,29].…”

Section: Operating Modes Principle Of the Modified Single-switch Bridmentioning

confidence: 99%

“…Comparison to the existing bridgeless PFC SEPIC structure [29] reveals that the modified bridgeless PFC SEPIC structure has the following distinctive features such as reduction of maximum current stress at the input capacitors and line diodes, undesired capacitive coupling loop, reduction of passive components, and elimination of circulating current, which increases the efficiency:…”

Section: Features Comparison Of the Modified And Existing Singleswitcmentioning

confidence: 99%

“…(i) Different from the existing structure presented in [29], the line diodes D 1 and D 2 are connected in series at the input inductors L 1 and L 2 and the slow-recovery diodes are needed for the line switching frequency which is f line = 50 Hz. Hence, the high maximum current that occurs at the line diodes D 1 and D 2 can be reduced.…”

Section: Features Comparison Of the Modified And Existing Singleswitcmentioning

confidence: 99%

“…Therefore, the issue on high commonmode electromagnetic interference (EMI) emission can be resolved in the modified structure because the ground point is shared between the two diodes [37,38]. (iii) By taking the positive-half cycle as a reference from the existing structure [29], during the whole positive-half line cycle, the metal-oxide-semiconductor field-effect transistor (MOSFET) S keeps turned on and turned off with a switching frequency of 50 kHz and with the input inductor L 1 in operation. When the MOSFET S is turned on, the current returns through the diode D p and no current flows through the body diode of MOSFET S. During this interval, no looping current occurs at the input capacitors C 1 and C 2 .…”

Section: Features Comparison Of the Modified And Existing Singleswitcmentioning

confidence: 99%

“…Conventional bridgeless PFC SEPIC structure[23,24] Existing single-switch bridgeless PFC SEPIC converter structure[29] …”

mentioning

confidence: 99%

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Modified single‐switch bridgeless PFC SEPIC structure by eliminating circulating current and power quality improvement

Noor

Ponniran

Rashid

et al. 2019

IET Power Electronics

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In this study, a modified single-switch bridgeless power factor correction (PFC) single-ended primary-inductor converter (SEPIC) structure is proposed. The major practical drawbacks of the existing structure are the presence of circulating current and high maximum current stress at the input capacitor and line diodes. Therefore, to overcome these problems, the existing structure is restructured by repositioning the line diodes in series with input inductors. Besides, the principle of design parameters optimisation is used based on the balancing energy compensation between input capacitors and output inductor. This structure is designed to operate in discontinuous conduction mode in order to achieve almost a unity power factor. The operation principle and design consideration of the modified structure is introduced in details. The experimental results demonstrate that the total harmonic distortion current is reduced from 56.3 to 4.9% after the optimisation process is performed, and at the same time the dead zones are inherently eliminated. Furthermore, it is shown that the output voltage ripple frequency is always double from the input line frequency of 50 Hz and the output voltage ripple is constantly lower than the maximum input voltage ripple. Thus, the designed parameters of the experimental converter are verified with ∼160 W of the converter output power.

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Section: Operating Modes Principle Of the Modified Single-switch Bridmentioning

confidence: 99%

Section: Features Comparison Of the Modified And Existing Singleswitcmentioning

confidence: 99%

Section: Features Comparison Of the Modified And Existing Singleswitcmentioning

confidence: 99%

Section: Features Comparison Of the Modified And Existing Singleswitcmentioning

confidence: 99%

“…Conventional bridgeless PFC SEPIC structure[23,24] Existing single-switch bridgeless PFC SEPIC converter structure[29] …”

mentioning

confidence: 99%

See 3 more Smart Citations

Modified single‐switch bridgeless PFC SEPIC structure by eliminating circulating current and power quality improvement

Noor

Ponniran

Rashid

et al. 2019

IET Power Electronics

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show abstract

Bidirectional integrated on-board chargers for electric vehicles—a review

Sam

Jegathesan

2021

Sādhanā

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An Improved Single-Switch Bridgeless SEPIC PFC Converter for Battery Charging Applications

Dwivedi,

Jayapragash

2024

IETE Journal of Research

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A Novel bridgeless SEPIC Converter for Power Factor Correction

Cited by 19 publications

References 4 publications

Modified single‐switch bridgeless PFC SEPIC structure by eliminating circulating current and power quality improvement

Modified single‐switch bridgeless PFC SEPIC structure by eliminating circulating current and power quality improvement

Bidirectional integrated on-board chargers for electric vehicles—a review

An Improved Single-Switch Bridgeless SEPIC PFC Converter for Battery Charging Applications

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