A Novel Switched-Coupled-Inductor DC–DC Step-Up Converter and Its Derivatives

Shih, Jin-Chung; Lao, Man-Long; Hsieh, Yi-Hsun; Liang, Tsorng–Juu; Chen, Kai–Hui

doi:10.1109/tia.2014.2332642

Cited by 117 publications

(42 citation statements)

References 18 publications

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“…By combining the clamp circuit and the switched capacitor and coupled inductor methods, the leakage inductor problem is solved, and the resultant circuit is capable to increase voltage gain and recover leakage energy, simultaneously. 10 The voltage gain is increased by switched capacitor through increment number of diode, capacitor, and switch. 11 On the other hand, the design and implementation of control scheme are complexed with increasing the number of switches.…”

Section: Introductionmentioning

confidence: 99%

A single switch high step-up DC-DC converter with three winding coupled inductor

Mahmoudi

Babaei

2018

Int Trans Electr Energ Syst

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Summary A new high gain DC‐DC converter based on single switch and three‐winding coupled inductor is presented in this paper. Existence of a three‐winding coupled inductor in suggested topology has led to lift voltage gain by low number of windings' turn ratio. As a result, the main advantage of the proposed converter is to produce a high voltage gain without great values of duty cycle. The passive clamped technology is used in the proposed converter. It causes better performance for proposed converter by recycling the leakage inductance energy as well as restricting voltage stress by reducing great voltage spikes. In this paper, performance analysis and mathematical equations of the proposed converter are explained. In addition, variations of voltage gain as a result of leakage inductance and voltage and current stresses of power devices are studied, too. Moreover, performance of the suggested converter and the previously presented high gain ones are compared with together. Lately, a 200‐W prototype is constructed, and the experimental results approve the effectiveness of the proposed converter.

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Section: Introductionmentioning

confidence: 99%

A single switch high step-up DC-DC converter with three winding coupled inductor

Mahmoudi

Babaei

2018

Int Trans Electr Energ Syst

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“…The finite switching time in a normal power device limits the switching frequency if the duty ratio is either too high or too small, so in order to abolish the above problems and simultaneously acquire essential high voltage, isolated converters can be engaged. Many isolated and non-isolated converter topologies have proposed over time, which make use of inductors, coupled inductors and transformers [16][17][18][19][20][21][22][23][24][25][26][27]. The high voltage stress occurring due to the transformer leakage inductance leads to switching losses and electromagnetic interference (EMI) problems, resulting in the reduced efficiency of conventional converters.…”

Section: Introductionmentioning

confidence: 99%

“…Hard switching converters are inconvenient to use for high voltage applications due to their circuit complexity, higher voltage stress across the switch and the increased cost of the converter. Hence, for isolated topologies the size, weight and losses of power transformers are [23][24][25][26][27][28][29][30][31][32][33][34][35] along with a switched inductor (SI), switched capacitor (SC), voltage lift switched inductor (VLSI) and modified VLSI principles were used to accomplish the necessity [15,26]. Figure 4a-c shows the recent SI, VLSI and modified VLSI inductive networks.…”

Section: Introductionmentioning

confidence: 99%

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A Multistage DC-DC Step-Up Self-Balanced and Magnetic Component-Free Converter for Photovoltaic Applications: Hardware Implementation

Bhaskar

Blaabjerg²

2017

Energies

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This article presents a self-balanced multistage DC-DC step-up converter for photovoltaic applications. The proposed converter topology is designed for unidirectional power transfer and provides a doable solution for photovoltaic applications where voltage is required to be stepped up without magnetic components (transformer-less and inductor-less). The output voltage obtained from renewable sources will be low and must be stepped up by using a DC-DC converter for photovoltaic applications. 2 K diodes and 2 K capacitors along with two semiconductor control switch are used in the K-stage proposed converter to obtain an output voltage which is (K + 1) times the input voltage. The conspicuous features of proposed topology are: (i) magnetic component free (transformer-less and inductor-less); (ii) continuous input current; (iii) low voltage rating semiconductor devices and capacitors; (iv) modularity; (v) easy to add a higher number of levels to increase voltage gain; (vi) only two control switches with alternating operation and simple control. The proposed converter is compared with recently described existing transformer-less and inductor-less power converters in term of voltage gain, number of devices and cost. The application of the proposed circuit is discussed in detail. The proposed converter has been designed with a rated power of 60 W, input voltage is 24 V, output voltage is 100 V and switching frequency is 100 kHz. The performance of the converter is verified through experimental and simulation results.

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“…In the literatures, [20][21][22] voltage doubler circuits, consisting of several capacitors and diodes, are used to improve the voltage gain. In the literatures, [23][24][25][26][27][28][29][30][31][32][33] coupled inductors, together with voltage doubler circuits or switching capacitors, are used to enhance the voltage gain. In the literatures, [34][35][36] the voltage boosting is based on Z-source converters.…”

Section: Introductionmentioning

confidence: 99%

An extensible two‐phase high voltage‐boosting converter with automatic current balance

Hwu

Jiang

2017

Circuit Theory & Apps

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Summary In this study, an extensible 2‐phase interleaved high step‐up converter with automatic current balance is presented. This converter uses coupled inductors and energy‐transferring capacitors to improve the voltage gain of the traditional 2‐phase interleaved boost converter as well as employs these energy transferring capacitors to do automatic current balance. Furthermore, the voltage gain can be enhanced not only by adjusting the turns ratio but also by increasing the numbers of phases, diodes, and energy‐transferring capacitors. Therefore, it can be used in high input current and high step‐up voltage applications. In this paper, the basic operating principles of the proposed converter are described and analyzed, and finally, its effectiveness is demonstrated by experiment. In addition, the field‐programmable gate array, named EP13T100C8N and manufactured by Altera Co, is used as a control kernel, and an experimental prototype, with input voltage of 12 V, output voltage of 200 V, and rated output power of 200 W, is given to provide the effectiveness of the proposed converter.

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A Novel Switched-Coupled-Inductor DC–DC Step-Up Converter and Its Derivatives

Cited by 117 publications

References 18 publications

A single switch high step-up DC-DC converter with three winding coupled inductor

A single switch high step-up DC-DC converter with three winding coupled inductor

A Multistage DC-DC Step-Up Self-Balanced and Magnetic Component-Free Converter for Photovoltaic Applications: Hardware Implementation

An extensible two‐phase high voltage‐boosting converter with automatic current balance

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