Three-level three-phase quasi-Z-source neutral-point-clamped inverter with novel modulation technique for photovoltaic application

Husev, Oleksandr; Roncero‐Clemente, Carlos; Romero‐Cadaval, Enrique; Vinnikov, Dmitri; Jalakas, Tanel

doi:10.1016/j.epsr.2015.08.018

Cited by 74 publications

(58 citation statements)

References 29 publications

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“…The main contributions of this paper are: • Proposal of a carrier-based pulse width modulation able to generate alternating UST and LST states for a multilevel Z-source, which provides several benefits (aforementioned) compared to the conventional FST state strategies presented in [5,11,24]. • Development of the strategy as a carrier-based pulse width instead of SVM-based, as others reported in the literature [22,23,30], allowing easier implementation.…”

Section: Theoretical Analysismentioning

confidence: 99%

“…A study of the various impedance network topologies can be found in [10]. A combination of two symmetrical quasi-Z-source networks with a 3L-NPC inverter was studied in [5,11]. A comprehensive analytical comparison of the Z-source-and quasi-Z-source-based two-and multilevel inverters was presented in [12] in terms of passive component sizing and semiconductor stress.…”

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confidence: 99%

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Improvements on the Carrier-Based Control Method for a Three-Level T-Type, Quasi-Impedance-Source Inverter

et al. 2019

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The boost feature that characterizes Z-source and quasi-Z-source converters is usually achieved by means of a proper insertion of short-circuit states in the full DC-link. In this work, a novel pulse width modulation carrier-based strategy for a three-phase, three-level T-type, quasi-Z-source inverter is introduced, based on the addition of alternate short-circuits in the two halves of the DC-link bus. This technique achieves better performance, less electromagnetic interference, and lower harmonic distortion of the output line-to-line voltage compared to the traditional methods based on the full DC-link shoot-through. At the same time, generating the switching states is to easy implement. The proposed strategy permits the use of electronic devices with lower blocking voltage capability, thus improving converter reliability, size, and cost. The new method may be implemented in another multilevel inverter with an impedance-source network as well. A comprehensive simulation study is performed in order to validate the adopted method, with different inverter input voltages, which is taken as representative of a photovoltaic array. Comparisons are conducted with conventional strategy insertions using the same topology in order to show the improvements achieved.

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Section: Theoretical Analysismentioning

confidence: 99%

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confidence: 99%

Improvements on the Carrier-Based Control Method for a Three-Level T-Type, Quasi-Impedance-Source Inverter

et al. 2019

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“…The purpose of this work consists of defining an approach to mitigate the first-five harmonics (third, fifth, seventh, ninth, and eleventh harmonics), to reduce the complexity of the required algorithm and allocating a few computational resources in the FPGA-based control board. The objective of this paper is to achieve the performances obtained in the literature [16,19,44,45] without using complex structures, but a simple one that can be modified in the future to approximate the novel schemes of the work of [20].…”

Section: Introductionmentioning

confidence: 99%

“…The cascaded H-bridge technique employs different DC sources to create different DC voltage levels.An interesting review can be found in the literature [9], which also takes into account the inverter's cost, by taking the factors numbers sources, switches, and variety. In the works of [10][11][12], good reviews are also performed.Inverters can also be classified according to their applications [10]: renewable energy applications [11][12][13][14][15][16][17][18][19][20][21], automotive [22][23][24][25][26][27], heavy traction [28,29], power quality [30,31], and industrial drives [32,33]. In the literature [13], the performance in terms of harmonics distortion rates were faced in order to extract maximum power from the PV modules.…”

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confidence: 99%

A Novel Computational Approach for Harmonic Mitigation in PV Systems with Single-Phase Five-Level CHBMI

2018

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In this paper, a novel approach to low order harmonic mitigation in fundamental switching frequency modulation is proposed for high power photovoltaic (PV) applications, without trying to solve the cumbersome non-linear transcendental equations. The proposed method allows for mitigation of the first-five harmonics (third, fifth, seventh, ninth, and eleventh harmonics), to reduce the complexity of the required procedure and to allocate few computational resource in the Field Programmable Gate Array (FPGA) based control board. Therefore, the voltage waveform taken into account is different respect traditional voltage waveform. The same concept, known as "voltage cancelation", used for single-phase cascaded H-bridge inverters, has been applied at a single-phase five-level cascaded H-bridge multilevel inverter (CHBMI). Through a very basic methodology, the polynomial equations that drive the control angles were detected for a single-phase five-level CHBMI. The acquired polynomial equations were implemented in a digital system to real-time operation. The paper presents the preliminary analysis in simulation environment and its experimental validation.It is well known that the fundamental multilevel topologies include the diode-clamped [4-6], flying capacitor [7], and cascaded H-bridge (CHB) structures [8]. Diode-clamped technology employs diodes to separate direct current (DC) voltage levels from one DC source at its midpoint. The flying capacitor technique substitutes diodes with capacitors. The cascaded H-bridge technique employs different DC sources to create different DC voltage levels.An interesting review can be found in the literature [9], which also takes into account the inverter's cost, by taking the factors numbers sources, switches, and variety. In the works of [10][11][12], good reviews are also performed.Inverters can also be classified according to their applications [10]: renewable energy applications [11][12][13][14][15][16][17][18][19][20][21], automotive [22][23][24][25][26][27], heavy traction [28,29], power quality [30,31], and industrial drives [32,33]. In the literature [13], the performance in terms of harmonics distortion rates were faced in order to extract maximum power from the PV modules. Again, that authors of [14,15] face the harmonics distortion by implementing a fast switching modulation, but without considering power losses. The authors of [16] recommend a single phase multilevel inverter configuration with three series connected full bridge inverter and a single half bridge inverter. In this case, a reduction of harmonics in terms of total harmonic distortion rate (THD) is evaluated around 9.85%. In another paper [17], a spice model considers not only the THD, but also the storage element. Again, in the literature [18], a simulation of the performance of multilevel inverter is made taking into account the partial shaded condition of PV panels. In the work of [19], a multilevel invert is used to reduce the THD. The simulation generates a 15-level output voltage with 8.12% of total har...

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“…Thus, in the same switching frequency and control mode, the harmonic content of the output voltage and current is much smaller than the traditional two level inverter. Especially, the neutral point clamp (NPC) type three level inverter [6]. In contrast with traditional two-level inverter, NCP structure is obviously remarkable in terms of withstand voltage pressure of switch tube, waveform deviation factor, voltage change ratio and device loss [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

A New STATCOM Based on T Type Three Level Inverter

Xu¹,

Li²,

Qin³

et al. 2017

IJCA

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Three-level three-phase quasi-Z-source neutral-point-clamped inverter with novel modulation technique for photovoltaic application

Cited by 74 publications

References 29 publications

Improvements on the Carrier-Based Control Method for a Three-Level T-Type, Quasi-Impedance-Source Inverter

Improvements on the Carrier-Based Control Method for a Three-Level T-Type, Quasi-Impedance-Source Inverter

A Novel Computational Approach for Harmonic Mitigation in PV Systems with Single-Phase Five-Level CHBMI

A New STATCOM Based on T Type Three Level Inverter

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