Results 171 to 180 of about 357 (217)
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Switched-Inductor Quasi-Z-Source Inverter
IEEE Transactions on Power Electronics, 2011This paper deals with a new family of high boost voltage inverters called switched-inductor quasi-Z-source inverters (SL-qZSIs). The proposed SL-qZSI is based on the well-known qZSI topology and adds only one inductor and three diodes. In comparison to the SL-ZSI, for the same input and output voltages, the proposed SL-qZSI provides continuous input ...
Nguyen, Minh-Khai +2 more
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A Novel Dual Switching Frequency Modulation for Z-Source and Quasi-Z-Source Inverters
IEEE Transactions on Industrial Electronics, 2018Impedance network inverters are the best alternatives for voltage-source and current-source inverters. The boosting capability and the shoot-through solution of such converters make them excellent solutions for various applications. Nevertheless, hard switching forces the converter to operate in low switching frequency, which results in a bulky ...
Mohammad Mohammadi 0003 +2 more
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Typical Transformer-Based Z-Source/Quasi-Z-Source Inverters
2016This chapter discusses the typical trans and LCCT Z-source/quasi-Z-source inverters (ZSIs/qZSIs). Their configurations, working operations, voltage and current principles, and simulation results are presented, providing a demonstration of the investigation of other extended transformer-based ZSIs/qZSIs.
Loh, Poh Chiang +2 more
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Improved performance of the switched inductor quasi Z-source inverter
2016 11th International Conference on Industrial and Information Systems (ICIIS), 2016This paper proposed the improvement of switched-inductor quasi-Z-source inverters (SL-qZSIs) with different control technique. SL-qZSIs adds only one inductor and three diodes as compare to the quasi z-source inverter but as compare to qZSI boost factor is high in SL-qZSI.
Devendra Kumar Pandey, Archana Singh
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Operating region of a three-phase quasi-Z-source inverter
2017 IEEE International Conference on Industrial Technology (ICIT), 2017The impedance source inverter family has become one of the most interesting alternatives for wind and photo-voltaic energies applications which require high conversion ratio. The main drawback of these inverters is related to the modulation signal which must be used to control the output current and voltage conversion ratio simultaneously. To deal with
Ana-Maria Llor +2 more
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Modeling and Control of Single-Phase Quasi-Z-Source Inverters
IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 2018Compared with a conventional two-stage inverter, the quasi-Z-source inverter (qZSI) has several advantages for renewable applications because of its buck-boost capability and continuous input current. This paper addresses modeling and control issues resulted from the impedance-source network resonance. Considering shoot-through states, null states, and
Wenjie Liu +3 more
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Loss Analysis of Quasi Z-source Inverter with Superjunction-MOSFET
IEEJ Transactions on Industry Applications, 2018AbstractA Z‐source inverter (ZSI) can work as an inverter with boost capability in one stage by using its impedance source and the short‐through mode as the switching mode. This paper discusses the circuit losses that depend on the boost ratio between the quasi ZSI, which is one of the ZSI topologies, using Superjunction‐MOSFETs and the conventional ...
Naoki Kamoshida +3 more
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A Digital Current Control of Quasi-Z-Source Inverter With Battery
IEEE Transactions on Industrial Informatics, 2013This paper presents a fixed frequency operating sliding mode (SM) current control method with fast response and improved stability. Different from the conventional SM control with variable switching frequency, the fixed-frequency SM controller is proposed to control the modulation index and shoot-through duty ratio of the voltage-fed quasi-Z-source ...
Jianfeng Liu +3 more
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Performance analyses of Z-source and quasi Z-source inverter for photovoltaic applications
AIP Conference Proceedings, 2018This paper presents the comparative analysis of Z-source and Quasi Z-source converter for renewable energy applications. Due to the dependency of renewable energy sources on external weather conditions the output voltage, current changes accordingly which effects the performance of traditional voltage source and current source inverters connected ...
S. Himabind, T. Hari Priya, Ch. Manjeera
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Analysis of space vector modulations for three-phase Z-Source / quasi-Z-source inverter
IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society, 2012As the development of Z-source / quasi-Z-source inverter (ZSI/qZSI), it appears several modified Space Vector Modulations (SVMs) for controlling them. Here, three typical SVMs are investigated and another extended one is also presented. The inductor current ripple, capacitor voltage gain, efficiency, and other performances of these control schemes are ...
Yushan Liu 0001 +3 more
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