Interleaved Dual Buck Full-Bridge Three-Level Inverter

Hong, Feng; Li, Jun; Ji, Baojian; Zhou, Yufei; Wang, Jianhua; Wang, Chenghua

doi:10.1109/tpel.2015.2421295

Cited by 33 publications

(28 citation statements)

References 25 publications

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“…From Figure 1, the transfer function between input voltage V dc and harmonic current i f can be obtained as shown in (15). Where ω f represents the angular switching frequency, K is the ratio of L i to L g .…”

Section: Parameter Optimizationmentioning

confidence: 99%

“…Reference [14] proposes a dual-output, dual-buck converter, which improves the load capacity while retaining the advantages of the buck converter. Reference [15] introduces an interleaved technology on the basis of a dual-buck converter to further reduce the inductance current ripple. It reduces the size of the filter and improves the power density of the converter.…”

Section: Introductionmentioning

confidence: 99%

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Parameters Design and Optimization of a High Frequency, Interleaved, Dual-Buck, Bidirectional, Grid-Connected Converter

Cui

Wang

2019

Electronics

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In this paper, a high frequency, interleaved, dual-buck, bidirectional, grid-connected converter topology is proposed. Free from the straight-through and dead-time distortion issues, both higher switching frequency and power density can be achieved. Due to the interleaved technique, the current ripple and stress for inductors and other power devices can be effectively reduced. Moreover, a novel filter parameter design method is proposed. The method is optimized with smaller inductance, higher filtering performance, and better steady-state performance. For one thing, the performance requirements under the two states of inverter and rectifier are comprehensively considered. For another, the relationship between the performance indexes and the filter parameters is analyzed. However, the results show that the relationship between the performance indexes is contradictory. A set of optimization parameters were obtained by setting the priority of the filter performance index. The specific design process of the filter parameters is given in detail. In order to verify the rationality of the parameter design, a 5 kW prototype was built and tested. The total harmonic distortions (THDs) of the grid currents in the among grid-connected inverter, off-connected inverter, and rectifier states under full load were 2.7%, 1.2%, and 4.5%, respectively, and the power density reached 36 W/in 3 .

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Section: Parameter Optimizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Parameters Design and Optimization of a High Frequency, Interleaved, Dual-Buck, Bidirectional, Grid-Connected Converter

Cui

Wang

2019

Electronics

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“…Daniel invented interleaved buck inverter to replace the conventional VSI topology with the key feature of eliminating the shoot‐through problems by changing circuit configuration. Hong et al developed a prototype of interleaved dual buck full‐bridge 3‐level inverter for grid‐connected system. Patel and Panda introduced interleaved topology to overcome the shoot‐through problem in the area of active filters and developed the model using OPAL‐RT platform.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations on multitudinal sliding mode controller-based interleaved shunt APF to mitigate shoot-through and PQ problems under distorted supply voltage conditions

Gali

Gupta

2018

Int Trans Electr Energ Syst

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Summary This paper presents design and hardware implementation of single‐phase interleaved inverter as shunt active power filter (SAPF) to mitigate shoot‐through phenomena and power quality problems like current harmonics and reactive power compensation. Shoot‐through phenomena are 1 of the failure mode in conventional voltage source inverter (VSI) which may damage power switches. This also introduces ringing effect and temperature rise and affects the reliability and efficiency of the system. However, external dead band circuits are used to eliminate these problems, but they reduce the harmonic compensation level. Further, the multitudinal sliding mode controller (MSMC) is proposed for stabilizing the DC‐link voltage under steady‐state and transient condition of the load. This has shown an excellent tracking capability with reduced DC‐link voltage ripples compared to the conventional sliding mode and PI controllers. DC‐link energy balance theorem is used for reference current generation. The proposed topology has been modeled using MATLAB®/Simulink environment and tested under the steady and transient condition of the load in different supply voltage conditions. A laboratory prototype has been designed and developed using dSPACE 1104 controller to validate the simulation results. The test results show the viability of the control algorithm and performance of the proposed interleaved inverter in the power quality applications.

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“…Compared with the isolated photovoltaic grid-connected inverter, non-isolated photovoltaic grid-connected inverter (NPGCI) has the advantages of small size, low cost and high efficiency [3,4,5]. To ensure the electrical safety, the VDE-0126-1-1 standard sets strict limits on the common-mode leakage current of PV system.…”

Section: Introductionmentioning

confidence: 99%

Research on common-mode leakage current for a novel non-isolated dual-buck photovoltaic grid-connected inverter

Dai

Guan

Zhang

et al. 2018

IEICE Electron. Express

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Abstract:The inhibition of common-mode leakage current is the key problem to be solved in non-isolated photovoltaic grid-connected inverter (NPGCI). To eliminate the common-mode leakage current of dual-buck gridconnected inverter, a novel non-isolated dual-buck photovoltaic grid-connected inverter (NDPGCI) topology is proposed in this paper. Meanwhile, a unipolar sinusoidal pulse width modulation (USPWM) strategy that can make the common-mode voltage constant is presented. Then, operating modes and common-mode leakage current of NDPGCI are analyzed, which show that NDPGCI modulated by USPWM has advantages of no shootthrough problem, three-level output characteristic and high reliability, as well as common-mode leakage current elimination. Finally, the experimental results verified the correctness of NDPGCI.

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Interleaved Dual Buck Full-Bridge Three-Level Inverter

Cited by 33 publications

References 25 publications

Parameters Design and Optimization of a High Frequency, Interleaved, Dual-Buck, Bidirectional, Grid-Connected Converter

Parameters Design and Optimization of a High Frequency, Interleaved, Dual-Buck, Bidirectional, Grid-Connected Converter

Experimental investigations on multitudinal sliding mode controller-based interleaved shunt APF to mitigate shoot-through and PQ problems under distorted supply voltage conditions

Research on common-mode leakage current for a novel non-isolated dual-buck photovoltaic grid-connected inverter

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