Novel active clamped Y‐source network for improved voltage boosting

Reddivari, Reddiprasad; Jena, Debashisha

doi:10.1049/iet-pel.2018.6212

Cited by 13 publications

(9 citation statements)

References 30 publications

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“…The high‐frequency switching IGBTs and diodes contribute losses during switching and conduction, which can be estimated knowing the operating conditions and are given below [30, 31]:

P_{SW} = ()(, E_{on} + E_{off}) \times f_{normals}

where

E_{on}, E_{off}

are energy losses during turn‐on and turn‐off instants, respectively

P_{normalC} = V_{on} I_{AV} + R_{on} I_{rms}^{2}

where

V_{on}

is the on‐state voltage;

I_{AV}

is the average current through the device;

R_{on}

is the on‐state resistance; and

I_{rms}

is the RMS current through the device.…”

Section: Resultsmentioning

confidence: 99%

“…The copper losses

()(, P_{Cu})

in the inductor carrying current I RMS,

I_{av}

average is given below:

P_{Cu} = false(I_{(av)}^{2} \times R_{dc} false) + false(I^{2} \times R_{ac} false)

where the DC resistance of the winding is given by

R_{dc} = ()(, N ρ l / a)

; the AC resistance of the winding is

R_{ac} = true \frac{h}{δ} R_{dc}

; the skin depth is

δ = \sqrt{ρ / π μ f}

; and h is the thickness of the winding [31].…”

Section: Resultsmentioning

confidence: 99%

“…The total power loss in bridgeless SEPIC involves losses in active devices of the circuit such as insulated-gate bipolar transistors (IGBTs), highfrequency diodes, and rectifier diodes as well as losses in passive elements such as intermediate capacitors, DC-link capacitor, and the losses in input-and output-side inductors. The high-frequency switching IGBTs and diodes contribute losses during switching and conduction, which can be estimated knowing the operating conditions and are given below [30,31]:…”

Section: Loss and Efficiency Estimationmentioning

confidence: 99%

“…where the DC resistance of the winding is given by R dc = N ρl/a ; the AC resistance of the winding is R ac = h δ R dc ; the skin depth is δ = ρ/πμ f ; and h is the thickness of the winding [31]. The total loss can be obtained by adding all the losses due to active elements and passive elements of the circuit.…”

Section: Copper Lossesmentioning

confidence: 99%

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Design of coupled inductors using split winding scheme for bridgeless SEPIC

Prabhu

Urundady

2020

IET Power Electronics

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A bridgeless single-ended primary inductance converter (SEPIC) is a highly preferred single-stage front-end AC-DC converter for applications requiring a wide variation of DC voltage because it also gives improved performance in terms of the quality of supply current. This study presents the design of coupled inductors for the bridgeless SEPIC using the split winding scheme. With coupling incorporated the required value of self-inductances of the input and output inductors for the same performance is reduced. Also, they can be wound on the same core, thereby resulting in a reduction in size. The conventional method of tuning the coupling coefficient by adjusting the air-gap is tedious. A split winding scheme for the distribution of windings over three limbs of E-core for obtaining the desired coupling coefficient is presented. The split winding scheme for the design of coupled inductors for bridgeless SEPIC converter rated for 500 W, 20 kHz is illustrated. The effect of coupling on the volume, weight, cost, and efficiency of the converter is compared with the conventional SEPIC converter without coupling for a similar performance. The performance of the proposed converter is evaluated using MATLAB/Simulink simulation and experimental results with a laboratory prototype rated for 500 W.

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“…The high‐frequency switching IGBTs and diodes contribute losses during switching and conduction, which can be estimated knowing the operating conditions and are given below [30, 31]:

P_{SW} = ()(, E_{on} + E_{off}) \times f_{normals}

where

E_{on}, E_{off}

are energy losses during turn‐on and turn‐off instants, respectively

P_{normalC} = V_{on} I_{AV} + R_{on} I_{rms}^{2}

where

V_{on}

is the on‐state voltage;

I_{AV}

is the average current through the device;

R_{on}

is the on‐state resistance; and

I_{rms}

is the RMS current through the device.…”

Section: Resultsmentioning

confidence: 99%

“…The copper losses

()(, P_{Cu})

in the inductor carrying current I RMS,

I_{av}

average is given below:

P_{Cu} = false(I_{(av)}^{2} \times R_{dc} false) + false(I^{2} \times R_{ac} false)

where the DC resistance of the winding is given by

R_{dc} = ()(, N ρ l / a)

; the AC resistance of the winding is

R_{ac} = true \frac{h}{δ} R_{dc}

; the skin depth is

δ = \sqrt{ρ / π μ f}

; and h is the thickness of the winding [31].…”

Section: Resultsmentioning

confidence: 99%

Section: Loss and Efficiency Estimationmentioning

confidence: 99%

Section: Copper Lossesmentioning

confidence: 99%

See 2 more Smart Citations

Design of coupled inductors using split winding scheme for bridgeless SEPIC

Prabhu

Urundady

2020

IET Power Electronics

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show abstract

“…

P_{italiccond . italicdiode} = 0.5 ((), V_{DO} \times \frac{I_{italicPK}}{π} + R_{D} \times \frac{{I^{2}}_{italicPK}}{4}) - M \cos φ ((), V_{DO} \times \frac{I_{italicPK}}{8} + R_{D} \times \frac{{I^{2}}_{italicPK}}{3 π}) .

P_{italicrect ., italicdiode} = \frac{E_{rr} \times I_{pk} \times f_{sw} \times V_{dc}}{π \times I_{nom} \times V_{nom}} .

Inductor, coupled inductor, and capacitor ESR losses : The passive components losses are due to winding internal resistance of inductor wires and ESR of capacitors. The equations to calculate both the losses are given in Reddivari and Jena and Erickson and Maksimovic 48,49

P_{L} + P_{C} = \sum_{x = 1}^{x = 3} {i^{2}}_{wx} r_{wx} + \sum_{x = 1}^{x = 2} {i^{2}}_{cx} r_{cx} .

Winding and core loss estimation : The winding and core losses of coupled inductors and normal inductors are calculated from equations given in Erickson and Maksimovic 49 .…”

Section: Embedded Semi Fγ‐mcis Invertermentioning

confidence: 99%

A cost‐effective single‐phase semi flipped gamma type magnetically coupled impedance source inverters

Gautham

Reddivari

Jena

2020

Circuit Theory & Apps

Self Cite

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Summary This paper presents a new two winding coupled inductor architecture for a semi magnetically coupled impedance source (SMCIS) inverter by connecting the coupled inductor windings in flipped gamma fashion. The proposed topology is derived from the conventional MCIS inverters. It can produce sinusoidal output voltage/current without using any shoot‐through operation and output LC filter, which improves the system reliability. Further, a doubly grounded feature, no start‐up inrush current, reduced component count, low input current ripple, continuous output currents, and small leakage currents are the major advantages of the proposed inverter. However, the proposed semi flipped gamma MCIS inverters still suffer from limited output voltage gain problem. The voltage‐boosting feature is added to the proposed inverter by connecting two converter modules in differential boost configuration through the embedded structure. The voltage‐boosting ability is the major advantage of this differential boost embedded configuration. It has flexibility in choosing a wide range of duty cycle operation from zero to one (whereas, the duty cycle was limited to 0.666 in case of semi‐Z‐source inverter [ZSI]). The modes of operation, design procedure, and feature comparisons of proposed inverters are discussed in this paper. Finally, the effectiveness of proposed inverters is validated through simulation and experimental results in terms of component count, voltage gain, and feature comparison.

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Bipolar DC-DC Converter Based on LCCT-Trans-Z-Source Topology

Jung,

Park

2024

J. Electr. Eng. Technol.

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Novel active clamped Y‐source network for improved voltage boosting

Cited by 13 publications

References 30 publications

Design of coupled inductors using split winding scheme for bridgeless SEPIC

Design of coupled inductors using split winding scheme for bridgeless SEPIC

A cost‐effective single‐phase semi flipped gamma type magnetically coupled impedance source inverters

Bipolar DC-DC Converter Based on LCCT-Trans-Z-Source Topology

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