Dynamic modeling and control system design of the buck-boost-based three-state three-phase Z-source inverter

Cavalcanti, Marcelo C.; Bradaschia, Fabrício; Neto, M.T. de Melo; Azevedo, Gustavo M. S.; Cardoso, Tiago D.

doi:10.1016/j.ijepes.2018.07.034

Cited by 18 publications

(3 citation statements)

References 10 publications

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“…But it must be noted that the proposed inverter has superior capabilities and advantages regarding inverter operation features according to the similar existing ones in the literature. On the other hand, it also must be noted that the passive elements number of the proposed inverter (the inductors and the capacitors) is equal to 36,37 or lower than 38,39 the compared ones where the passive components cause more density and cost according to the active switches. Thus, the proposed inverter topology includes moderate number of elements regarding reduced cost and density with enhanced operation capabilities according to the similar inverter topologies in the literature that have limited operation capabilities as seen from Table 1.…”

Section: Introductionmentioning

confidence: 99%

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A novel three‐phase buck‐boost inverter controlled by an open‐loop assisted closed‐loop hybrid control method

Yalçın

2021

Circuit Theory & Apps

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Summary A novel general purpose three‐phase buck‐boost inverter without need of additional filtering units is presented in this study. The proposed inverter topology is built with moderate numbers of elements in terms of the operation advantages and qualities. The buck‐boost converter‐based structure provides obtaining wide‐range output voltage amplitudes lower or higher than the input voltages. A novel hybrid control method that is open‐loop assisted closed‐loop control is proposed for the inverter operation to improve the response performance on various input and output operation conditions. The wye‐connected modular structure of the proposed inverter topology also enables unbalanced three‐phase operation and single‐phase operation for each phase with independent phase voltages and frequencies. An experimental laboratory setup is built for the proposed three‐phase inverter for 0–50 Hz, 0–100 Vp, and 1.5 kW operation values for real‐time application tests. Simulation tests are also applied for the inverter. The obtained results for both the simulation and the experimental tests show that the presented inverter with the proposed hybrid control method is capable of operating in balanced/unbalanced three‐phase and independent single‐phase modes while producing close to sine wave output voltages under 5% THD levels with wide range desired amplitudes and frequencies on different operating points.

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Section: Introductionmentioning

confidence: 99%

“…PI controller is used for the feedback control, but the design of the controller is not presented. The proposed z‐source inverter by Cavalcanti et al 39 is developed for general purpose for supplying of the three‐phase loads. The existence of the neutral return enables the inverter operation in unbalanced load conditions.…”

Section: Introductionmentioning

confidence: 99%

A novel three‐phase buck‐boost inverter controlled by an open‐loop assisted closed‐loop hybrid control method

Yalçın

2021

Circuit Theory & Apps

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“…In switched mode converters, transistors function as switches where they are switched ON/OFF based on their duty ratios (D). Linear mode converters are characterised by low efficiency while switched mode converters contain harmonics due to switching and require filters [4][5][6][7][8]. Switched mode converters were further classified into voltage source converters (VSCs) and current source converters (CSCs) until the invention of impedance source converters (ISCs/ZSCs) [9].…”

Section: Introductionmentioning

confidence: 99%

Extended family of DC-DC Quasi-Z-Source converters

Ado¹,

Jusoh²,

Sutikno³

2019

IJECE

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The family of DC-DC q-ZSCs is extended from two to three classes and four to six members. All the members were analyzed based on efficient duty ratio range (RDeff) and general duty ratio range (RDgen). Findings showed that similar to the traditional buck-boost converter (BBC), each of the topologies is theoretically capable of inverted buck-boost (BB) operation for the RDgen with additional advantages but differed according to class in how the gains are achieved. The new topologies have advantages of BB capability at the RDeff, continuous and operable duty ratio range with unity gain at contrary to existing topologies where undefined or zero gain is produced. Potential applications of each class were discussed with suitable topologies for applications such as fuel cells, photovoltaic, uninterruptible power supply (UPS), hybrid energy storage and load levelling systems identified.

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An efficient RFCSA control strategy for PV connected quasi Z‐source cascaded multilevel inverter (QZS‐CMI) system

Ramya

Sivakuaran

2019

Int J Numerical Modelling

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This paper proposes an effective AI control technique‐based improved QZS‐CMI topology for interfacing PV system. Generally, the interface between the PV dc source and the load is accomplished by a QZSI. In the paper, the proposed control scheme is a consolidated execution of both the RF and CSA named as RFCSA. The principle goal of the proposed approach is to determine the efficiency of the PV system by the maximum power extraction. Here, the modeling design of QZS‐CMI is enhanced to deliver the maximum power from a PV power generating system. Initially, the objective function is defined based on their controller parameters and constraints such as voltages, current, power, and modulation index etc. These parameters are applied to the inputs of the proposed RFCSA technique. The proposed RFCSA technique is improved the voltage profile, power delivery, and minimizing the power oscillations while sharing the power to the load. The maximum power delivery to the load is ensured by an AI technique based on MPPT. The proposed AI‐based improved QZS‐CMI regulated the shoot‐through duty ratio and reduced the modulation burden. Moreover, the proposed RFCSA control technique reduced the injected power and regulates the dc link voltage, current, and frequency conditions. The proposed technique is implemented in MATLAB/Simulink platform, and their output performance is compared with the existing methods for different loading conditions.

show abstract

Dynamic modeling and control system design of the buck-boost-based three-state three-phase Z-source inverter

Cited by 18 publications

References 10 publications

A novel three‐phase buck‐boost inverter controlled by an open‐loop assisted closed‐loop hybrid control method

A novel three‐phase buck‐boost inverter controlled by an open‐loop assisted closed‐loop hybrid control method

Extended family of DC-DC Quasi-Z-Source converters

An efficient RFCSA control strategy for PV connected quasi Z‐source cascaded multilevel inverter (QZS‐CMI) system

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