New Hexagonal Three-Phase Voltage-Source Converter Topology for High-Power Applications

Laka, Aitor; Barrena, Jon Andoni; Chivite-Zabalza, Javier; Vidal, Miguel Ángel Rodríguez; Izurza-Moreno, Pedro

doi:10.1109/tie.2014.2327597

Cited by 21 publications

(9 citation statements)

References 32 publications

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“…To increase the power rating of a Voltage Source Converter (VSC), Laka et al [31] have presented a new VSC topology with high power handling capacity over a standard three-phase VSC. The proposed converter has interconnected three three-phase converters with 3L-NPC using two Zero Sequence Blocking Transformers (ZSBT) to avoid undesirable overcurrent.…”

Section: B Application Oriented New Multilevel Topologiesmentioning

confidence: 99%

A Review on Reduced Switch Count Multilevel Inverter Topologies

2020

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Multilevel Inverters (MLIs) are becoming more and more popular in medium and high power applications. This is due to several inherent advantages of MLI over two-level inverters such as high-quality output, lower device ratings, and several others. While the classical topologies are still having applications in most of the key areas, there is a growing interest in newer multilevel topologies with an objective of reducing power semiconductor device count, gate drivers and/or isolated DC sources. In this paper, a comprehensive review of some of the recently proposed newer multilevel inverter topologies with the abovementioned objectives is presented. In this article, a detailed investigation in terms of total power semiconductor switch count, number of DC sources, passive component requirement, highest switch voltage rating, total standing voltage etc. has been presented.

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Section: B Application Oriented New Multilevel Topologiesmentioning

confidence: 99%

A Review on Reduced Switch Count Multilevel Inverter Topologies

2020

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“…where i a , i b , and i c are the phase currents of the phases a, b, and c, respectively, and their values could be obtained from (19…”

Section: Current Relationshipsmentioning

confidence: 99%

“…The authors [18] solved the problem of unbalanced three-phase currents in each unit by using intermediate transformers instead of inductors. However, the intermediate transformers are bulky [19]. On the other hand, in both topologies, the number of voltage levels will be limited by the number of cascaded VSI units.…”

Section: Introductionmentioning

confidence: 99%

Cascaded H-Bridge MLI and Three-Phase Cascaded VSI Topologies for Grid-Connected PV Systems with Distributed MPPT

Noman

Addoweesh

Alabduljabbar

et al. 2019

International Journal of Photoenergy

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Cascaded multilevel inverter topologies have received a great deal of attention for grid-connected PV systems. In this paper, three-cascaded multilevel inverter configurations are proposed for grid-connected PV applications. These are the three-phase cascaded H-bridge multilevel inverter topology, three-phase cascaded voltage-source inverter topology using inductors, and three-phase cascaded voltage-source inverter topology using coupled transformers. Distributed maximum power point tracking (MPPT) of PV modules using perturbation and observation algorithm is used for all presented topologies. In all presented configurations, each PV module is connected to one DC-DC isolated Ćuk converter for best MPPT achievement. Simulation is achieved by using the SIMULINK environment. The simulation results show that the three proposed topologies function well in improving the grid’s power quality. The grid currents are kept in phase with the grid voltage to ensure unity power factor, and the THD of the grid currents are within the acceptable range. The proposed topologies are experimentally implemented in the lab, and the switching pulses are generated with the help of the MicroLabBox data acquisition system. Comparing the three topologies according to the number of switches, voltage, and current stresses on switches and THD of the generated voltages and grid currents and according to the efficiency has been achieved in this paper, both experimentally and by simulation. The simulation and experimental results and comparisons are presented to verify the proposed topologies’ effectiveness and reliability.

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“…During the last decades, multilevel converters have been one of the more worthwhile challenges in power electronic fields. They have enabled power systems to meet increasingly stringent grid and load requirements [1]- [8]. Nowadays, many industrial applications, especially for medium-and high-voltage systems, use multilevel topologies, particularly the Neutral Point Clamped (NPC) one, thanks to its inherent advantages such as high DC-bus voltage, reduced output voltage harmonics, low voltage stress on power switches, and low dV/dt ratings [9]- [13].…”

Section: Introductionmentioning

confidence: 99%

Versatile Three-Level FC-NPC Converter With High Fault-Tolerance Capabilities: Switch Fault Detection and Isolation and Safe Postfault Operation

Abdelghani

Richardeau

et al. 2017

IEEE Trans. Ind. Electron.

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This paper deals with a hybrid fault-tolerant converter topology. It is performed through the connection of a classical three-phase three-level Neutral Point Clamped (3L-NPC) converter with a fourth three-level Flying Capacitor (3L-FC) leg. The 3L-FC leg actively balances the 3L-NPC neutral point voltage. For normal operation mode, this paper proposes a mathematical design of the filter needed to connect these two different topologies. Experimentally, and thanks to the already existing decoupling capacitors of the 3L-NPC converter, this filter requires the addition of only one low size inductance. When one fault of the power switch of the 3L-NPC occurs, the paper proposes hardware reconfiguration technique based on only two fuses and one thyristor per leg allows a safe post-fault operation recovery. This is achieved thanks to a simple faultdetection method and a new technique that combines fault leg isolation and corresponding phase post-fault connection to the neutral point. Also, a dedicated FPGA-based control of the reconfigured converter is synthetized to ensure power system availability under fault operation mode. The converter fault-tolerant capabilities are addressed through simulation results and original overall experimental validations of the fault detection and isolation and the post-fault operation steps, carried out on a 15 kW prototype converter.

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New Hexagonal Three-Phase Voltage-Source Converter Topology for High-Power Applications

Cited by 21 publications

References 32 publications

A Review on Reduced Switch Count Multilevel Inverter Topologies

A Review on Reduced Switch Count Multilevel Inverter Topologies

Cascaded H-Bridge MLI and Three-Phase Cascaded VSI Topologies for Grid-Connected PV Systems with Distributed MPPT

Versatile Three-Level FC-NPC Converter With High Fault-Tolerance Capabilities: Switch Fault Detection and Isolation and Safe Postfault Operation

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