Switched-Boost-Modified Z-Source Inverter Topologies With Improved Voltage Gain Capability

Ahmad, Anish; Bussa, Vinod Kumar; Singh, Rajeev Kumar; Mahanty, R.

doi:10.1109/jestpe.2018.2823379

Cited by 44 publications

(57 citation statements)

References 40 publications

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“…By comparing the relationships (23) and 8, it is seen that by increasing the operation modes of the SM-SBI in the second control method, the value of the boost factor is increased under the same duty cycle. The second type of control method has the ability to either increase or decrease the duration of the AOD-nST mode of time, and consequently the SOD-nST, by changing the frequency of v tri2 (t) to reach the optimal value of the gain of the voltage at a given value of D ST .…”

Section: Analyses Of Sm-sbi In the Second Control Methodsmentioning

confidence: 99%

“…By using a power switch in the impedance network of SBI, the main difference between nonswitched and switched ZSIs is obtained. In order to improve the disadvantages of SBI, improved topologies have been presented in [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. In [10,11], the embedded SBI and current fed switched inverter (CFSI) have been presented.…”

Section: Introductionmentioning

confidence: 99%

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Effect of different pulse‐width modulation control methods on the behaviour of the series modified switched boost inverter

Nozadian

Babaei

Hosseini

2019

IET Power Electronics

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In this study, a switched Z-source inverter with a new suitable control method is proposed that is called the series modified switched boost inverter (SM-SBI). In addition, the generalised proposed control method is presented. Furthermore, in order to show the effect of the other control methods on the operation of SM-SBI, the operation of the proposed inverter is presented using two other control methods. In order to analyse precisely, each of these three switching methods is completely introduced and then the operation of SM-SBI in these three switching methods is thoroughly stated. In addition, equivalent circuits of the SM-SBI during these control methods are presented. The voltage and current equations of all elements in the proposed structure based on the three switching methods are derived. In addition, the power loss analysis of SM-SBI is presented too. In order to show the effect of used control methods on the other conventional structures, a comprehensive comparison between the proposed inverter and the other switched step-up inverters is shown by applying these three switching methods. In the end, in order to confirm theoretical analyses, the simulation results by using PSCAD/EMTDC software are presented as well as the experimental results.

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Section: Analyses Of Sm-sbi In the Second Control Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of different pulse‐width modulation control methods on the behaviour of the series modified switched boost inverter

Nozadian

Babaei

Hosseini

2019

IET Power Electronics

View full text Add to dashboard Cite

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“…The basis of QZS inverter is developed by improvising Z source (ZS) inverter with the intention of compensating its disadvantages [10], [11]. ZS inverter possesses the ability to convert DC to AC along with boosting up or down the voltage in a single stage [12], [13].…”

Section: Qzs Inverter Topologymentioning

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 quasi-ZSI (q-ZSI), as shown in Figure 1b, provides an effective solution to the above limitations [3]. Based on the basic ZSI/qZSI structure, many attempts have been made to enhance the performance of impedance source converters in terms of high boost capability, low voltage stresses across the components, and high efficiency [4][5][6][7][8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…This modified topology is a combination of the SBI and diode-assisted network, which provides a high voltage gain and continuous input currents. Furthermore, the modified topology quasi-ZSI with continuous input current (CC-qZSI) in [17] shows the improved boost capabilities and less voltage stresses by adding a switched boost network to the original qZSI.…”

Section: Introductionmentioning

confidence: 99%

A Switched Quasi-Z-Source Inverter with Continuous Input Currents

2020

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Impedance source converters as single-stage power conversion alternatives can boost and regulate the output voltages of renewable energy sources. Nevertheless, they, also known as Z-source inverters (ZSIs), still suffer from limited voltage gains and higher stresses across the components. To tackle such issues, extra diodes, passive components, and active switches can be utilized in the basic ZSIs. In this paper, a modified switched-quasi-Z-source inverter (S-qZSI) is proposed, which features continuous input currents and high boosting capability to boost output voltage by minor modifications of a prior-art topology. Furthermore, the voltage stress of the active switches is reduced, which contributes to a lower cost. The operation principles are discussed comprehensively. The performance of the proposed ZSI in terms of conversion ratio, voltage gain, and stresses on the power switches and capacitors is benchmarked with selected ZSIs. Finally, simulations and experimental tests substantiate the theoretical analysis and superior performance.

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Switched-Boost-Modified Z-Source Inverter Topologies With Improved Voltage Gain Capability

Cited by 44 publications

References 40 publications

Effect of different pulse‐width modulation control methods on the behaviour of the series modified switched boost inverter

Effect of different pulse‐width modulation control methods on the behaviour of the series modified switched boost inverter

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

A Switched Quasi-Z-Source Inverter with Continuous Input Currents

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