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Photovoltaic lighting system based on Z-source/quasi-Z-source converter topology
2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2011This paper proposes a photovoltaic lighting system based on a power converter that combines the Z-source and the quasi-Z-source topologies. When there is enough sunlight the power converter operates similarly as the quasi-Z-source topology and thus the photovoltaic energy is stored in a battery bank.
L. V. Hartmann +4 more
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Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344), 2003
This paper presents an impedance-source (or impedance-fed) power converter (abbreviated as Z-source converter) and its control method for implementing DC-to-AC, AC-to-DC, AC-to-AC, and DC-to-DC power conversion. The Z-source converter employs a unique impedance network (or circuit) to couple the converter main circuit to the power source, thus ...
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This paper presents an impedance-source (or impedance-fed) power converter (abbreviated as Z-source converter) and its control method for implementing DC-to-AC, AC-to-DC, AC-to-AC, and DC-to-DC power conversion. The Z-source converter employs a unique impedance network (or circuit) to couple the converter main circuit to the power source, thus ...
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Comparative Evaluation of Three Z-Source/Quasi-Z-Source Indirect Matrix Converters
IEEE Transactions on Industrial Electronics, 2015Conventional matrix converters (MCs) have limited voltage gain that is less than 0.866, whether for direct MC (DMC) or indirect MC (IMC). Existing Z-source (ZS)/discontinuous quasi-Z-source (qZS) DMCs and ZS IMCs achieved larger than 0.866 voltage gain; however, the former inherited the complex commutation from DMC, and the latter involved a ZS network
Shuo Liu +4 more
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A Z-Source Half-Bridge Converter
IEEE Transactions on Industrial Electronics, 2014Applying an LC network into a half-bridge converter, a novel Z-source half-bridge converter is presented, in which less LC components are needed compared to the conventional one. This Z-source half-bridge converter can solve not only the problems of the shoot-through and limited voltage but also the problem of imbalance at the midpoint voltage of input
Zhang, Guidong +5 more
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A Comparison Between Quasi-Z-Source Inverter and Active Quasi-Z-Source Inverter
2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia), 2019This paper presents some comparative results between the three-phase quasi-Z source inverter (qZSI)and active quasi-Z source inverter (AqZSI). An improved PWM method is proposed for AqZSI. The voltage gain can be increased by using the shoot-through duty cycle and the switching ratio of the additional switch.
Duong, Truong Duy +4 more
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2011 10th International Conference on Environment and Electrical Engineering, 2011
Many renewable generation units (e.g. PVs, fuel cells, small wind turbines) require integrated DC-AC converters providing efficient high step-up power conversion. On the basis of recent developments in impedance source (Z-source) inverters the present paper proposes an integration of quasi-Z-source inverter (qZSI) with a built-in high frequency ...
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Many renewable generation units (e.g. PVs, fuel cells, small wind turbines) require integrated DC-AC converters providing efficient high step-up power conversion. On the basis of recent developments in impedance source (Z-source) inverters the present paper proposes an integration of quasi-Z-source inverter (qZSI) with a built-in high frequency ...
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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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IEEE Transactions on Power Electronics, 2014
On the basis of the classical Z-source inverter (ZSI), this paper presents a novel ZSI which only contains inductors and diodes in Z-source network. The inverter uses a unique inductor and diode network for boosting its output voltage, provides a common ground for the dc source and inverter, and avoids the disadvantage causing by capacitor in the ...
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On the basis of the classical Z-source inverter (ZSI), this paper presents a novel ZSI which only contains inductors and diodes in Z-source network. The inverter uses a unique inductor and diode network for boosting its output voltage, provides a common ground for the dc source and inverter, and avoids the disadvantage causing by capacitor in the ...
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An Improved $Z$-Source Inverter
IEEE Transactions on Power Electronics, 2011This paper proposes an improved Z-source inverter topology. Compared to previous Z-source inverter topology, it can reduce the Z-source capacitor voltage stress greatly, and has an inherent limitation to inrush current. The control strategy is exactly the same as the previous one, so all existing control strategies can be used directly.
Yu Tang, Shaojun Xie, Chaohua Zhang
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Leakage Current Mitigation in Transformerless Z-Source/Quasi-Z-Source PV Inverters:An Overview
2019The Z-Source Inverter (ZSI) and quasi-Z-Source Inverter (qZSI) are single-stage configurations with high boosting ratios. They might be promising solutions for transformerless PV systems, requiring a high-step voltage conversion. The lack of galvanic isolation becomes the new challenge.
Yuan, Jing; id_orcid 0000-0002-5801-5702 +2 more
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