A New Interleaved Coupled-Inductor Nonisolated Soft-Switching Bidirectional DC–DC Converter With High Voltage Gain Ratio

Bahrami, Hamid; Farhangi, Shahrokh; Iman‐Eini, Hossein; Adib, Ehsan

doi:10.1109/tie.2017.2782221

Cited by 104 publications

(56 citation statements)

References 30 publications

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“…where the kPUi and kIUi are the proportional and integral coefficients of the voltage control. In agreement with (14), the correction term δ1i is higher when the average voltage greatly deviates from reference VCref. As shown by (15), this fact enforces reference VCrefi1 of the TPC control so as to realize the consensus of and VCref, which means that the average CL DC-bus voltage are regulated very close to the rated value [20].…”

Section: Secondary Controlsupporting

confidence: 77%

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Regulation Performance of Multiple DC Electric Springs Controlled by Distributed Cooperative System

et al. 2019

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DC electric springs (DCESs) have been recently developed to improve the voltage stability of a DC microgrid. A lately proposed DCES topology is comprised of a DC/DC three port converter (TPC), a bi-directional buck-boost converter (BBC) and a battery, and is arranged as follows: The TPC input port is fed by a renewable energy source (RES) whilst the two TPC output ports supply a non-critical load (NCL) and a critical load (CL) separately; in turn, BBC together with the battery constitutes the DCES energy storage unit (ESU) and is connected in parallel to CL. In this paper, a set of DCESs with such a topology and with their CLs connected to a common DC bus is considered. The control of the DCESs is built up around a distributed cooperative system having two control levels, namely primary and secondary, each of them endowed with algorithms committed to specific tasks. The structure of the control levels is explicated and their parameters are designed. The control system is applied to a DCES set taken as a study-case and tested by simulation. The results of the tests show the excellent performance of the control system in both regulating the CL DC bus voltage and keeping the state-of-charge of the battery within predefined limits.

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Section: Secondary Controlsupporting

confidence: 77%

“…where V s C and V s C are the form in frequency domain of V C and V C . The correction term in (14) can be written in the frequency domain as…”

Section: Consensus Of the CL Average Voltagementioning

confidence: 99%

Regulation Performance of Multiple DC Electric Springs Controlled by Distributed Cooperative System

et al. 2019

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“…DC-DC converters with coupled inductor can provide a high-voltage gain with a low operating duty cycle by using a proper turn ratio of the coupled inductor. [33][34][35][36][37] Moreover, some new single-switch high-voltage gain A-source converters based on coupled inductor are presented in Siwakoti et al 38 and Ayachit et al 39 These converters can be classified as a high step-up, isolated, autotransformer-based circuit topology. Therefore, switches with low R ds (on) and low conduction loss can be utilized.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, some novel topologies for high step-up DC-DC converters based on coupled inductor are presented in previous studies. [33][34][35][36][37] Moreover, some new single-switch high-voltage gain A-source converters based on coupled inductor are presented in Siwakoti et al 38 and Ayachit et al 39 These converters can be classified as a high step-up, isolated, autotransformer-based circuit topology. Also, in these converters, the A-source impedance network utilizes a minimal turn ratio compared with another magnetically coupled impedance source (MCIS) networks to get a high-voltage gain.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of a high step‐up single‐switch coupled inductor DC‐DC converter with low‐voltage stress on components for PV power application

Azizkandi

Sedaghati

Shayeghi

2019

Circuit Theory & Apps

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This paper presents a single-switch, high step-up, non-isolated DC-DC converter for photovoltaic (PV) power application. The proposed converter is composed of a coupled inductor, a passive clamp circuit, a voltage multiplier cell, and a voltage lift circuit. The passive clamp circuit recovers the leakage inductance energy of the coupled inductor and limits the voltage spike on the switch. Configuration of the passive clamp and voltage multiplier circuits increases the converter voltage gain. High-voltage gain without a large duty cycle, low turn ratio of the coupled inductor, low-voltage stress on the switch and diodes, leakage inductance energy recovery, and high efficiency are the main merits of the suggested DC-DC converter. Steady-state operation of the converter in continuous conduction mode (CCM), discontinuous conduction mode (DCM), and boundary condition mode (BCM) is discussed and analyzed in detail. Then, design procedure of the proposed converter is given. The presented DC-DC converter is compared with similar topologies to verify its advantages. Moreover, theoretical efficiency of the presented converter is calculated in details. Finally, simulation and experimental measurement results of 388 V-220 W prototype of the proposed DC-DC converter at 50-kHz switching frequency are presented to verify its performance.

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“…8 In this case, the ripple frequency regarding the input and output quantities is increased, resulting in reduced filter elements, minimization of current stresses through the semiconductors, and improved distribution of losses. 9 However, current unbalance regarding the many phases must be carefully taken into account, what may be caused by small differences in the duty ratios applied to the active switches and/or parasitics with distinct ratings regarding the power stage elements. 10 In this case, special control circuits and techniques may be necessary to achieve proper current sharing.…”

Section: Introductionmentioning

confidence: 99%

A step‐up/step‐down direct current to direct current converter for high‐power, high‐current applications

Feretti

Souza

Gomes

et al. 2018

Circuit Theory & Apps

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Summary This work proposes the conception of a nonisolated direct current (DC)‐DC buck‐boost converter employing the three‐state switching cell. Similarly to interleaving, it is possible to achieve higher power levels than that regarding the classical buck‐boost converter, but prominent advantages over the interleaved approach result, ie, the input current is continuous for duty ratios higher than 0.5; good current sharing is achieved without the need of special control schemes; and the active switches are connected to the same reference node as the input voltage source, as there is no need to use isolated drive circuitry. A thorough quantitative and qualitative analysis is carried for the entire range of the duty cycle D, considering that the proposed converter presents distinct behaviors for D < 0.5 and D > 0.5. An experimental prototype is developed and evaluated, while the results are discussed in detail.

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A New Interleaved Coupled-Inductor Nonisolated Soft-Switching Bidirectional DC–DC Converter With High Voltage Gain Ratio

Cited by 104 publications

References 30 publications

Regulation Performance of Multiple DC Electric Springs Controlled by Distributed Cooperative System

Regulation Performance of Multiple DC Electric Springs Controlled by Distributed Cooperative System

Design and analysis of a high step‐up single‐switch coupled inductor DC‐DC converter with low‐voltage stress on components for PV power application

A step‐up/step‐down direct current to direct current converter for high‐power, high‐current applications

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