High-Frequency SiC-Based Inverters With Input Stages Based on Quasi-Z-Source and Boost Topologies—Experimental Comparison

Wolski, Kornel; Zdanowski, Mariusz; Rąbkowski, Jacek

doi:10.1109/tpel.2018.2890625

Cited by 22 publications

(13 citation statements)

References 17 publications

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“…Experimental results obtained from laboratory tests of equivalent 6-kW 100-kHz inverters based on SiC MOSFETs and Schottky diodes are provided. Results of the experiments show that the quasi ZSI topology has input inductor current quality, output voltage quality and also power losses (at high values of input voltage) [63].…”

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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“…ii) With the PI-based MPPT control, the active-state duty cycle [ ] of the kth SM is obtained through (15).…”

Section: Implementation and Advantagesmentioning

confidence: 99%

Duty-Cycle Predictive Control of Quasi-Z-Source Modular Cascaded Converter Based Photovoltaic Power System

et al. 2020

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A duty-cycle predictive control is proposed for dc grid integration of front-end isolated quasi-Z-source modular cascaded converter (qZS-MCC) photovoltaic (PV) power system. The post-stage qZS half-bridge dc-dc converter deals with PV maximum power point tracking, dc grid integration, and dc-link voltage balance; whereas, the front-end isolation converters operate at a constant duty cycle of 50%. Thus, it saves control hardware resources while overcoming challenges from PV-panel voltage variations and dcbus voltage limit. The proposed control uses the derived circuit model to predict the global active-state duty cycle for grid-connected current control and predict the shoot-through duty cycles for dc-link voltage balance, achieving a fast and accurate tracking target. The proposed control method has advantages of: i) eliminating weighting factors that exist in conventional model predictive control (MPC), ii) no sophisticated loop parameters design that exists in proportional-integral (PI) control, iii) operating at constant switching frequency that is different from the conventional MPC with variable switching frequency. Simulation and experimental tests are carried out to verify the effectiveness of the proposed control method and compare with the PI-based control system. INDEX TERMS Photovoltaic power system, dc-dc power conversion, quasi-Z-source converter, predictive control.

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“…The main advantage of the CqZSI compared to DqZSI is that this topology has a continuous input current [8]. Many comparisons between ISIs and traditional twostage inverters have demonstrated that single-stage inverters have better system reliability and output quality [10][11][12]. Moreover, when the voltage gain of the inverter is less than two, the ZSI and qZSI have higher efficiency than the conventional two-stage inverter [10,12].…”

Section: Introductionmentioning

confidence: 99%

An DPWM for Active DC-Link Type Quasi-Z-Source Inverter to Reduce Component Voltage Rating

Tran

Nguyen

2022

Energies

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The conventional DC-link type quasi-Z-source inverter has been known as a buck–boost inverter with a low component voltage rating. This paper proposes an active DC-link type quasi-Z-source inverter by adding one active switch and one diode to the impedance-source network to enhance the voltage gain of the inverter. As a result, the component voltage rating of the inverter is significantly reduced, which is demonstrated through some comparisons between the proposed topology and others. A discontinuous pulse width modulation (DPWM) scheme is proposed to control the inverter, which reduces the number of commutations compared to the traditional strategy. Under this approach, the insertion of a shoot-through state does not cause any extra commutations compared to the conventional voltage-source inverter. Details about control implementation, steady-state analysis, and design guidelines are also presented in this paper. Simulation and a laboratory prototype have been built to test the proposed inverter. Both buck and boost operations of the proposed inverter are implemented to validate the performance of the inverter.

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High-Frequency SiC-Based Inverters With Input Stages Based on Quasi-Z-Source and Boost Topologies—Experimental Comparison

Cited by 22 publications

References 17 publications

Review of impedance source power converter for electrical applications

Review of impedance source power converter for electrical applications

Duty-Cycle Predictive Control of Quasi-Z-Source Modular Cascaded Converter Based Photovoltaic Power System

An DPWM for Active DC-Link Type Quasi-Z-Source Inverter to Reduce Component Voltage Rating

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