A New Transformerless Quadratic Boost Converter with High Voltage Gain

Ahmad, Javed; Zaid, Mohammad; Sarwar, Adil; Tariq, Mohd; Sarwer, Zeeshan

doi:10.1080/23080477.2020.1807178

Cited by 30 publications

(28 citation statements)

References 25 publications

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“…A modified QBC with twice the gain as QBC is proposed in Ref. 31. New step‐up converters with desirable features like low stress 32 and multi‐input operation 33 are introduced and investigated by authors.…”

Section: Introductionmentioning

confidence: 99%

A transformerless high gain dc–dc boost converter with reduced voltage stress

Zaid

Khan

Siddique

et al. 2021

Int Trans Electr Energ Syst

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Summary In this paper, a modified and improved high gain dc–dc boost converter is proposed. The converter has utilized two voltage multiplier cells (VMCs) comprising switched capacitors (SC) and switched inductors (SL) to increase the voltage gain of the converter. The basic concept of these switched topologies is that when the switch is ON, the energy is stored by the inductor and the capacitor transfers its energy to load and inductor. In the OFF cycle, the inductor transfers its energy to the capacitor, and, simultaneously, capacitor is charged through input voltage also. As compared to other nonisolated topologies, the proposed converter has a high voltage gain and low voltage stress across semiconductor devices. The voltage stress on all capacitors except the output capacitor is less than the voltage across the load. A detailed analysis of the converter in continuous conduction (CCM) and discontinuous conduction modes (DCM) is shown. The proposed converter has a peak efficiency of 94.8%. For the efficiency calculation of the proposed topology, PLECS software is used. The experimental results agree with the theoretical analysis and validate the working and performance of the proposed converter.

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Section: Introductionmentioning

confidence: 99%

A transformerless high gain dc–dc boost converter with reduced voltage stress

Zaid

Khan

Siddique

et al. 2021

Int Trans Electr Energ Syst

Self Cite

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“…The voltage gain of more than 10 times can be achieved for the duty of less than 0.5. (2) The voltage stress across switches of the proposed converter is much less than the output voltage V o, which is an improvement over the quadratic converters proposed in [18,30] in which the voltage stress is equal to V o . Moreover, the diodes and capacitors also have low voltage stress, leading to the selection of low voltage rating devices and subsequently improving the converter's efficiency.…”

Section: Introductionmentioning

confidence: 84%

“…The non-isolated configurations of these structures do not use any transformer and are suitable in solar PV applications for medium power applications. The voltage stress across switch, diodes, and capacitors is generally low in these structures, which is another advantage apart from high-gain; however, the number of components may increase [27][28][29][30] if a very high quadratic gain is required.…”

Section: Introductionmentioning

confidence: 99%

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A Voltage Multiplier Circuit Based Quadratic Boost Converter for Energy Storage Application

et al. 2020

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In this paper, a new transformerless high voltage gain dc-dc converter is proposed for low and medium power application. The proposed converter has high quadratic gain and utilizes only two inductors to achieve this gain. It has two switches that are operated simultaneously, making control of the converter easy. The proposed converter’s output voltage gain is higher than the conventional quadratic boost converter and other recently proposed high gain quadratic converters. A voltage multiplier circuit (VMC) is integrated with the proposed converter, which significantly increases the converter’s output voltage. Apart from a high output voltage, the proposed converter has low voltage stress across switches and capacitors, which is a major advantage of the proposed topology. A hardware prototype of 200 W of the proposed converter is developed in the laboratory to validate the converter’s performance. The efficiency of the converter is obtained through PLECS software by incorporating the switching and conduction losses.

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“…These converters mostly utilize VMC and several inductors and capacitors to achieve the high voltage gain. Non-isolated topologies of these converters are suitable in microgrid operations [25][26][27][28] for medium power applications. These converters can be put at the front end of the inverter to maintain the DC-link voltage.…”

Section: Introductionmentioning

confidence: 99%

A Family of Transformerless Quadratic Boost High Gain DC-DC Converters

et al. 2021

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This paper presents three new and improved non-isolated topologies of quadratic boost converters (QBC). Reduced voltage stress across switching devices and high voltage gain with single switch operation are the main advantages of the proposed topologies. These topologies utilize voltage multiplier cells (VMC) made of switched capacitors and switched inductors to increase the converter’s voltage gain. The analysis in continuous conduction mode is discussed in detail. The proposed converter’s voltage gain is higher than the conventional quadratic boost converter, and other recently introduced boost converters. The proposed topologies utilize only a single switch and have continuous input current and low voltage stress across switch, capacitors, and diodes, which leads to the selection of low voltage rating components. The converter’s non-ideal voltage gain is also determined by considering the parasitic capacitance and ON state resistances of switch and diodes. The efficiency analysis incorporating switching and conduction losses of the switching and passive elements is done using PLECS software (Plexim, Zurich, Switzerland). The hardware prototype of the proposed converters is developed and tested for verification.

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A New Transformerless Quadratic Boost Converter with High Voltage Gain

Cited by 30 publications

References 25 publications

A transformerless high gain dc–dc boost converter with reduced voltage stress

A transformerless high gain dc–dc boost converter with reduced voltage stress

A Voltage Multiplier Circuit Based Quadratic Boost Converter for Energy Storage Application

A Family of Transformerless Quadratic Boost High Gain DC-DC Converters

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