Dual-input isolated full-bridge boost dc–dc converter based on the distributed transformers

Zhang, Zhe; Thomsen, Ole C.; Andersen, Michael A. E.; Nielsen, Henning R.

doi:10.1049/iet-pel.2011.0181

Cited by 71 publications

(39 citation statements)

References 24 publications

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“…The dynamic and transient response of the isolated full bridge DC-DC converter are improved under starting and load step change conditions. In [19], a new two-input isolated boost DC-DC converter based on a distributed multitransformer structure, which is suitable for hybrid renewable energy systems is investigated and designed. the two-input ports can be decoupled completely, so the converter can draw the power from the two different DC sources, which have low output voltage, and transfer it to the DC bus, which has high voltage, separately or simultaneously.…”

Section: Introductionmentioning

confidence: 99%

An Improved Gray Wolf Optimizer MPPT Algorithm for PV System With BFBIC Converter Under Partial Shading

et al. 2020

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Based on the boost full bridge isolated converter (BFBIC) topology and considering the sudden changes in the external environment, a global maximum power point tracking (GMPPT) control strategy based on an improved gray wolf optimizer (IGWO) algorithm is proposed in this paper. In the strategy, a nonlinear tangent trigonometric function as a convergence factor is integrated into the gray wolf optimizer (GWO) algorithm. In addition, the active-clamp circuit and phase-shift are used to implement the soft switch technology for BFBIC converter in photovoltage (PV) system. Finally, the maximum power point tracking (MPPT) performance on PV system with the proposed IGWO algorithm under static and dynamic partial shading conditions (PSCs) was investigated and compared with other common perturb and observe(P&O), particle swarm optimization (PSO), artificial bee colony (ABC), adapt inertia weight salp swarm algorithm (WSSA), salp swarm algorithm with grey wolf optimizer (SSA-GWO), SSA with PSO (SSA-PSO), enhanced GWO (EGWO) MPPT algorithms. The effectiveness and stability of the proposed control strategy are validated, especially tracking speed under PSCs. Simulation results show that the BFBIC topology with the proposed IGWO algorithm outperforms other algorithms on most cases, especially only takes the tracking time of 0.24s and reaches the efficiency of 98.54% under the most severe PSCs. INDEX TERMS Boost full bridge isolated converter (BFBIC), improved grey wolf optimizer (IGWO), global maximum power point tracking (GMPPT), partial shading conditions (PSCs)

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Section: Introductionmentioning

confidence: 99%

An Improved Gray Wolf Optimizer MPPT Algorithm for PV System With BFBIC Converter Under Partial Shading

et al. 2020

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“…Moreover, partly isolated TPCs (PITPCs) and fully isolated TPCs (FITPCs) are preferred in applications requiring high voltage regulation ratios [21,22]. One can deduce from [21][22][23][24][25][26][27][28][29][30][31][32] that PITPCs and FITPCs are usually derived from traditional full bridge (FB) or half bridge (HB) topologies, which use a large number of switches as well as a high frequency transformer (HFT). However, use of an HFT along with a large number of switches, increasing the converter size, losses, cost and may make bulky the converter and reduce the overall power density.…”

Section: Introductionmentioning

confidence: 99%

“…Following the same concept (benefiting from FB and HF converters), the family of FITPCs was derived in [29][30][31][32]. In order to improve the FITPC performance and increase its power transfer capability, it was suggested in [30] to size the converter auxiliary inductance for use in hybrid energy storage systems.…”

Section: Introductionmentioning

confidence: 99%

Partly isolated three‐port DC–DC converter based on impedance network

Bayat

Baghramian

2020

IET Power Electronics

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This study proposed a novel partly isolated three port converter (PITPC) based on a quasi-Z source converter for photovoltaic applications. Compared with the conventional quasi-Z source converter, the proposed DC-DC converter has dual input sources and uses the switched capacitors and coupled inductor techniques, helping the converter to gain a high voltage. To achieve the power flow control, the proposed converter uses only three power switches with low voltage stress and it is developed for hybridising photovoltaic panels, rechargeable batteries and isolated loads. For this purpose, the proposed PITPC can be easily reconfigured into dual-input single-output, single-input dual-output and single-input single-output modes; so it can even operate when the photovoltaic panel fails to provide energy to the load. Moreover, the study thoroughly discusses various converter operating modes and provides explanations and necessary relationships for circuit operations. The study also explains the control strategy as well as the pulse width modulation waveforms for the proposed converter. Simulation results from MATLAB/Simulink examine the proposed topology performance. The experimental results confirm the advantages claimed for the proposed converter; the results also show a well-distributed efficiency curve and a peak of 96.3%.

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“…[13][14][15] Magnetically coupled MICs utilize a multi-winding transformer to control the power flow between ports. [16][17][18][19][20] Thanks to the transformer, in MCMICs, a HV gain can be achieved between each of the two ports, and it is possible to connect the power sources with significantly different voltage levels. However, in MCMICs, the transformer results in a bulky structure that requires a complex control strategy to manage the power.…”

Section: Introductionmentioning

confidence: 99%

A bidirectional high step-up multi-input DC-DC converter with soft switching

KhademiAstaneh

Javidan

Valipour

et al. 2018

Int Trans Electr Energ Syst

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Summary With the advancement of technology in renewable energy resources, the researchers and engineers have been more interested in utilizing such energy resources in various types of applications. To utilize commercial loads, the produced energy should be transferred to a high voltage (HV) DC link. In this paper, a double input HV gain DC‐DC converter is proposed. The soft switching capability and bidirectional power flow are achieved in the proposed topology using a coupled inductor structure. Thanks to an improved switching strategy for different power flow modes, soft switching operation of four main switches is achieved in low voltage (LV) to HV power flow direction. In HV to LV power transfer, the soft switching of the half of switches still exists. Moreover, a HV gain is achieved due to utilizing the coupled inductor. To validate the operation of proposed converter in different operation modes, a laboratory prototype was tested, which its results is presented in the paper.

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Dual-input isolated full-bridge boost dc–dc converter based on the distributed transformers

Cited by 71 publications

References 24 publications

An Improved Gray Wolf Optimizer MPPT Algorithm for PV System With BFBIC Converter Under Partial Shading

An Improved Gray Wolf Optimizer MPPT Algorithm for PV System With BFBIC Converter Under Partial Shading

Partly isolated three‐port DC–DC converter based on impedance network

A bidirectional high step-up multi-input DC-DC converter with soft switching

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