Model-Based Current Control for Single-Phase Grid-Tied Quasi-Z-Source Inverters With Virtual Time Constant

Kömürcügil, Hasan; Bayhan, Sertaç; Bagheri, Farzaneh; Kükrer, Osman; Abu‐Rub, Haitham

doi:10.1109/tie.2018.2801778

Cited by 36 publications

(13 citation statements)

References 26 publications

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“…Komurcugil et al have developed a model based current control approach with a compensating of dc-side inductor current ripple, active damping, and virtual time constant for single-phase grid-tied quasi-Zsource inverters with an LCL filter. Experimental results are presented to show the validity and performance of the proposed control approach [66]. Jain et al had proposed a predictive power control algorithm that decouples active and reactive power for grid integration of PV systems using a qZSI.…”

Section: Quasi Z Source Inverter Topologiesmentioning

confidence: 99%

Review of impedance source power converter for electrical applications

Saravanan

Venkatachalam

Borelessa

et al. 2021

IJAAS

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<p>Power electronic converters have been actively researched and developed over the past decades. There is a growing need for new solutions and topography to increase the reliability and efficiency of alternatives with lower cost, size and weight. Resistor source converter is one of the most important power electronic converters that can be used for AC-DC, AC-AC, DC-DC and DC-DC converters which can be used for various applications such as photovoltaic systems, wind power systems, electricity. Vehicles and fuel cell applications. This article provides a comprehensive overview of Z-source converters and their implementation with new configurations with advanced features, emerging control strategies and applications.</p>

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Section: Quasi Z Source Inverter Topologiesmentioning

confidence: 99%

Review of impedance source power converter for electrical applications

Saravanan

Venkatachalam

Borelessa

et al. 2021

IJAAS

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show abstract

“…The authors reduced the ripples at 2ω frequency in the photovoltaic systems between DC input and AC output by using film converters in their study. They obtained both experimental and practical results by using MPPT on the DC side and PI and PR control methods on the AC side [95]. In their study, the authors proposed a new modulation strategy by using Ripple Vector Cancelation method to eliminate the ripples on the current at 2ω frequency coil and on the voltage on the capacitor.…”

Section: Elimination Of Ripples At 2ω Frequencymentioning

confidence: 99%

A Review of Control Methods on Suppression of 2ω Ripple for Single-Phase Quasi-Z-Source Inverter

2020

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One of the disadvantages of the charging systems and voltage regulation systems in alternative energy systems is that when the direct current (DC)/alternative current (AC) or AC/DC conversion is made from the energy source, the energy flow at 2ω frequency between the direct current side and the alternative current side causes ripples in the DC, inductors, and capacitors. The ripples that occur in 2ω frequency increase the harmonic distortion and reduce the efficiency in the photovoltaic energy system. For addressing this problem, different control methods are evaluated in this paper for the elimination of ripples that occur at 2ω frequency, both on the perspective of DC control side and AC control side with a thorough comparative analysis with existing results in the literature. In the present study, the model of Single-Phase Quasi-Z Source (QZS) inverter and closed-loop control methods of the inverter are examined and compared with pulse width modulation (PWM) methods. In addition, the control methods are used to eliminate the ripples at 2ω frequency in the use of inverters, and the advantages and disadvantages of these methods are presented. INDEX TERMS QZS inverter, suppression of 2ω ripple, control methods, pulse width modulation. I. INTRODUCTION

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“…The Z-source inverter (ZSI), as a single-stage power converter, has been reported with a step-up/down function in PV systems [10,11]. The discontinuous input current in ZSI in PV applications makes it impossible to meet the maximum energy harvesting; nevertheless, the quasi-Z-Source inverter (qZSI) has the same properties as ZSI, except that the input current is continuous [12,13]. In particular, the use of qZSI in PV system applications improves their performance and efficiency.…”

Section: Introductionmentioning

confidence: 99%

Applying a Sliding Mode Controller to Maximum Power Point Tracking in a Quasi Z-Source Inverter Based on the Power Curve of a Photovoltaic Cell

2022

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Due to the nonlinear nature of photovoltaic (PV) cells and the dependence of the maximum achievable power on environmental conditions, a robust nonlinear controller is essential to warrant maximum power point tracking (MPPT) by managing the nonlinearities of the system and making it robust against varying environmental conditions. Most methods used to obtain MPPT have some disadvantages; one of them is the oscillation around the operating point. In this paper, to minimize these problems, a robust nonlinear sliding mode controller based on the power curve of a PV (SMC-PCPV) was proposed to determine the maximum power point (MPP) of a PV panel, for a quasi Z-source inverter (qZSI) as a single-stage inverter. Single-stage inverters have lower components and prices, smaller sizes, more simplicity, and higher efficiency than two-stage inverters. One of the important features of this controller is its ease of implementation compared to other methods presented in the articles. To show the effectiveness and robustness of the proposed scheme, the SMC-PCPV was carried out on computer simulations and laboratory prototypes. The simulation and experimental results showed that the proposed controller was properly resistant to changes in input parameters, such as temperature and radiation, and controlled the converter at the best point to obtain the most power from the PV panel, and it had good speed in response to the changing environmental condition.

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Model-Based Current Control for Single-Phase Grid-Tied Quasi-Z-Source Inverters With Virtual Time Constant

Cited by 36 publications

References 26 publications

Review of impedance source power converter for electrical applications

Review of impedance source power converter for electrical applications

A Review of Control Methods on Suppression of 2ω Ripple for Single-Phase Quasi-Z-Source Inverter

Applying a Sliding Mode Controller to Maximum Power Point Tracking in a Quasi Z-Source Inverter Based on the Power Curve of a Photovoltaic Cell

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