Closed Loop Control of Bi-Directional Soft Switched Quasi Z-Source DC-DC Converter

Suresh, A.; Rashmi, M. R.; Madusuthanan, V.; Kumar, Punit

doi:10.4236/cs.2016.75049

Cited by 4 publications

(4 citation statements)

References 15 publications

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“…To compensate for the shortcomings of traditional Z-source step-up converters, the concept of the quasi-Z-source network was proposed [10,11,[16][17][18]. This architecture has the same voltage gain as the Z-source architecture but solves the problems of discontinuous input currents, excessive capacitor voltage stress, and nonisolated converter input and output terminals not sharing a common ground.…”

Section: Literature Reviewmentioning

confidence: 99%

Novel High-Efficiency High Step-Up DC–DC Converter with Soft Switching and Low Component Voltage Stress for Photovoltaic System

Wang

2021

Processes

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This study developed a novel, high-efficiency, high step-up DC–DC converter for photovoltaic (PV) systems. The converter can step-up the low output voltage of PV modules to the voltage level of the inverter and is used to feed into the grid. The converter can achieve a high step-up voltage through its architecture consisting of a three-winding coupled inductor common iron core on the low-voltage side and a half-wave voltage doubler circuit on the high-voltage side. The leakage inductance energy generated by the coupling inductor during the conversion process can be recovered by the capacitor on the low-voltage side to reduce the voltage surge on the power switch, which gives the power switch of the circuit a soft-switching effect. In addition, the half-wave voltage doubler circuit on the high-voltage side can recover the leakage inductance energy of the tertiary side and increase the output voltage. The advantages of the circuit are low loss, high efficiency, high conversion ratio, and low component voltage stress. Finally, a 500-W high step-up converter was experimentally tested to verify the feasibility and practicability of the proposed architecture. The results revealed that the highest efficiency of the circuit is 98%.

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Section: Literature Reviewmentioning

confidence: 99%

Novel High-Efficiency High Step-Up DC–DC Converter with Soft Switching and Low Component Voltage Stress for Photovoltaic System

Wang

2021

Processes

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“…The Boost Convertor Output Voltage (VB), Input Current (IL), Boost Inductance (LB), Fly-back inductance (LF), Bulk Capacitors CB1, CB2 and output filter capacitor (Co) are given as follows [34][35][36][37].…”

Section: Mathematical Calculations Qsc Based Ibspfcmentioning

confidence: 99%

Low-Stress and Efficient Design of Integrated Boost Series Parallel Fly-Back Converters

Soma¹,

Netapally²,

Mallapu³

2020

JESA

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This paper Presents comparative analysis of IBSPFC &QSC Based IBSPFC by using FPGA. By using this IBSPFC the voltage stress is reduced across the switch when compare to conventional fly-back converters. The multi winding transformer gives higher reliability i.e. if any one of the winding damages other one supplies power to the load. On the other hand, QSC based IBSPFC will achieved Zero voltage & Zero current switching, which will increase more efficiency when compare to conventional single stage integrated converters and IBSPFC. Operating modes of QSC, based IBSPFC&IBSPFC have been introduced. The primary side winding of the fly-back transformer is coupled in series across with bulk capacitor to minimize switch voltage stress and the secondary winding of the 1:1 fly-back transformer. Basic voltage mode control Techniques are used to control the output voltage and current. An input voltage of 25V primary side and 50V battery at secondary side, 100v output, 100W and 100KHz DC-Dc isolated QSC based IBSPFC is implemented using FPGA SPARTAN6LX9 and experimental results and comparative table have been presented.

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“…Disadvantages with the z source converter are discontinuity of input.current, greater.voltage stress on Switch is more. The Lf-Cf output filter is used to reduce ripple in the output.current and load voltage respectively [2]. In the reference [21] & [22] authors have used the MPPT algorithm to obtain the maximum power while harnessing the solar energy.…”

Section: Introductionmentioning

confidence: 99%

“…Mitigation of voltage sags can be done using these inverters as they boost the voltage and they provide reliability, flexibility, and reduced harmonics. By controlling the shoot through period makes the z source converter to produce the voltage higher than the line voltage and because of this they are used in compensation of voltage when there is reduction of voltage level in power systems [2].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Two Stage Quasi Z Source Boost Converter for Photovoltaic Applications

Jyothi¹,

Philipose²

2017

IOSR JEEE

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Closed Loop Control of Bi-Directional Soft Switched Quasi Z-Source DC-DC Converter

Cited by 4 publications

References 15 publications

Novel High-Efficiency High Step-Up DC–DC Converter with Soft Switching and Low Component Voltage Stress for Photovoltaic System

Novel High-Efficiency High Step-Up DC–DC Converter with Soft Switching and Low Component Voltage Stress for Photovoltaic System

Low-Stress and Efficient Design of Integrated Boost Series Parallel Fly-Back Converters

Hybrid Two Stage Quasi Z Source Boost Converter for Photovoltaic Applications

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