Reduced Switch Count DC-Link AC–AC Five-Leg Converter

Jacobina, Cursino B.; Freitas, Isaac Soares de; Silva, E.R.C. da; Lima, A.M.N.; Ribeiro, Rodrigo

doi:10.1109/tpel.2006.880307

Cited by 63 publications

(26 citation statements)

References 11 publications

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“…Unlike the configuration 9L, converters 5L and 5L-NPC should operate with input and output voltages in phase (θ lg = 0 • ) so that it is not necessary to increase the DC-link voltage, which imposes additional complexity to the control system [14], [15].…”

Section: B Ls-pwmmentioning

confidence: 99%

“…Considering that the voltages v gk and v lk are in phase (θ lg = 0 • ) and that V g and V l are their amplitudes, respectively, the minimum DC-link voltage required by the configurations 5L and 5L-NPC is √ 3 max{V g , V l } [14], [15], whereas the minimum voltage required for each DC-link of the configuration 9L is half (…”

Section: A Dc-link Voltage Specificationmentioning

confidence: 99%

“…2). The first configuration, named here 5L, is the two-level converter illustrated in Fig 2(a) [13], [14]. The second configuration, named here 5L-NPC, is the three-level NPC converter shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation of Three-Phase AC–DC–AC Multilevel Nine-Leg Converter

Maia

Jacobina

Freitas

et al. 2016

IEEE Trans. on Ind. Applicat.

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In this paper, a reversible multilevel nineleg converter for three-phase applications is investigated. This topology can be applied in line voltage regulators, power factor correction (PFC) devices and uninterrupted power supplies (UPS). It is composed of three singlephase three-leg converters with a leg shared by both load and grid sides. Suitable modelling, a pulse-width modulation (PWM) strategy based on vector approach and a control system are developed. The proposed PWM and control strategies are suitable to balance the DC-link voltages and to optimize the harmonic distortion, reducing switching stress and power losses. The investigated configuration is compared with two conventional topologies, including a neutral-point clamped (NPC) converter, and has demonstrated that it presents some advantages in terms of voltage rating of the power switches, harmonic distortion and semiconductor losses. Computer simulations and experimental results have been carried in the same operation conditions to verify the validity of theoretical considerations.

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Section: B Ls-pwmmentioning

confidence: 99%

Section: A Dc-link Voltage Specificationmentioning

confidence: 99%

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Investigation of Three-Phase AC–DC–AC Multilevel Nine-Leg Converter

Maia

Jacobina

Freitas

et al. 2016

IEEE Trans. on Ind. Applicat.

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“…On the other hand, component minimized converters have been studied in a large number of papers in recent years [17,18,19]. These converters may provide the benefits of higher reliability and less volume and cost.…”

Section: Introductionmentioning

confidence: 99%

“…One of these structures is the so-called five-leg converter [17]. This converter has been proposed in applications like independent control of two threephase electrical machines [17,18], component minimized AC/DC/AC converter [19] and 6-leg fault-tolerant converter [16]. It is also mentioned in [19] that in cases where input and output frequencies are the same, the five-leg converter is an Fault Tolerant Five-Leg Converter Topology with FPGA-based Reconfigurable Control interesting replacement for the six-leg converter.…”

Section: Introductionmentioning

confidence: 99%

Fault-Tolerant Five-Leg Converter Topology With FPGA-Based Reconfigurable Control

Shahbazi

Poure

Saadate

et al. 2013

IEEE Trans. Ind. Electron.

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A novel multiport converter switching scheme to integrate multiple renewable energy sources

Bizhani

Techato

Noroozian

et al. 2022

Circuit Theory & Apps

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Summary In this paper, an innovative switching scheme named simultaneous space vector modulation (SSVM) is proposed for integrating various AC sources in the energy industry using a unified multiport converter. The proposed SSVM technique is applied to the multileg topology of a multiport converter, which is an encouraging option for the grid integration of renewable energy sources and multimachine drives. Considering the shared leg in the multileg converter, the proposed SSVM can utilize the utmost simultaneous switching states between different ports, resulting in lower switching loss and better DC‐link voltage utilization compared with the conventional sequential space vector modulation approach. A novel decision matrix concept is introduced to identify the simultaneous switching states. For this aim, according to the number of ports of the multileg converter, decision matrices containing valid simultaneous switching states are first calculated. Then, they are defined as look‐up tables in the proposed SSVM to be retrieved and exploited in every sampling period. The effectiveness of the proposed SSVM for a seven‐leg version of the multileg converter is assessed using the simulation analysis and real‐time validation. The capability of the proposed SSVM‐based multiport converter in grid integration of AC renewable energy sources is also verified considering two permanent magnet synchronous generator (PMSG)‐based wind turbines with real wind speed patterns. The simulation results confirm that the proposed SSVM is properly able to manage the power flow between different ports and improve the DC voltage utilization and switching loss compared with the sequential SVM.

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Reduced Switch Count DC-Link AC–AC Five-Leg Converter

Cited by 63 publications

References 11 publications

Investigation of Three-Phase AC–DC–AC Multilevel Nine-Leg Converter

Investigation of Three-Phase AC–DC–AC Multilevel Nine-Leg Converter

Fault-Tolerant Five-Leg Converter Topology With FPGA-Based Reconfigurable Control

A novel multiport converter switching scheme to integrate multiple renewable energy sources

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