A New Modulation Method for a 13-Level Asymmetric Inverter Toward Minimum THD

Espinosa, Eduardo; Espinoza, José; Melín, Pedro; Ramírez, Roberto O.; Villarroel, Felipe; Muñoz, Javier; Morán, L.

doi:10.1109/tia.2013.2282494

Cited by 47 publications

(20 citation statements)

References 25 publications

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“…Global voltage THD minima found in [15,16] for up to 6-7 angles without explicitly indicating the modulation indices are, in fact, local minima of voltage THD curve in Figure 2.…”

Section: Optimal Voltage and Current Total Harmonic Distortion Solutionsmentioning

confidence: 98%

“…Over the interlevel modulation index intervals 1-2, 2-3, 3-4, 4-5, voltage and current quadratic approximation error (NMS/THD) local minima and maxima appear. Global voltage THD minima found in [15,16] for up to 6-7 angles without explicitly indicating the modulation indices are, in fact, local minima of voltage THD curve in Figure 2.…”

Section: Optimal Voltage and Current Total Harmonic Distortion Solutionsmentioning

confidence: 98%

“…One reason might be a generally high complexity of a possible mathematical approach or the fact that sometimes there is no practical need to consider infinitely many harmonics. Recent publications have shown that it is quite feasible to consider an infinite harmonic content for the voltage THD when making multilevel voltage waveform analysis in the time domain [14][15][16]. Optimal switching angles that minimize single-phase multilevel inverter voltage THD for a given level count are presented in [15] and [16] without explicitly indicating the corresponding modulation index.…”

Section: Introductionmentioning

confidence: 99%

“…Voltage THD optimization results of [15,16] are included as a special case. Based on the authors' knowledge, the breakthrough of the proposed method is a current quality optimization and minimization for multilevel single-phase inverters using the time-domain WTHD taking into consideration all possible switching harmonics.…”

Section: Introductionmentioning

confidence: 99%

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Time-Domain Minimization of Voltage and Current Total Harmonic Distortion for a Single-Phase Multilevel Inverter with a Staircase Modulation

et al. 2016

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This paper presents the optimization technique for minimizing the voltage and current total harmonic distortion (THD) in a single-phase multilevel inverter controlled by staircase modulation. The previously reported research generally considered the optimal THD problem in the frequency domain, taking into account a limited harmonic number. The novelty of the suggested approach is that voltage and current minimal THD problems are being formulated in the time domain as constrained optimization ones, making it possible to determine the optimal switching angles. In this way, all switching harmonics can be considered. The target function expression becomes very compact and existing efficient solvers for this kind of optimization problems can find a solution in negligible processor time. Current THD is understood as voltage frequency weighted THD that assumes pure inductive load-this approximation is practically accurate for inductively dominant RL-loads. In this study, the optimal switching angles and respective minimal THD values were obtained for different inverter level counts and overall fundamental voltage magnitude (modulation index) dynamic range. Developments are easily modified to cover multilevel inverter grid-connected applications. The results have been verified by experimental tests.

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“…Global voltage THD minima found in [15,16] for up to 6-7 angles without explicitly indicating the modulation indices are, in fact, local minima of voltage THD curve in Figure 2.…”

Section: Optimal Voltage and Current Total Harmonic Distortion Solutionsmentioning

confidence: 98%

Section: Optimal Voltage and Current Total Harmonic Distortion Solutionsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Time-Domain Minimization of Voltage and Current Total Harmonic Distortion for a Single-Phase Multilevel Inverter with a Staircase Modulation

et al. 2016

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“…The stack of H-Bridge cells allows to reduce the THD by using carrier shifted for every cell or by asymmetric voltages with the purpose of decreasing the THD at the minimum possible value [2], Typically CHB topologies are based on Voltage Source Inverters (VSI), but the CSI version is also an interesting alternative [3]- [9] due to (i) CSI behaves as boost to the ac voltage side and (ii) CSIs just requires a first order capacitive filter, making the control easier to reach [3]. As well as in VSI, the control may be achieved by different ways as linear, nonlinear, predictive, resonant control between others.…”

Section: Introductionmentioning

confidence: 99%

Resonant control for multi-cell cascaded H-Bridge topologies based on current source inverters

Rohten

Melina

Silva

et al. 2014

IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society

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Single-phase inverters have gained important acceptance last time. This is because single phase inverters have been used in renewable energy, ac drives and many other applications and controlled by name ways as linear, nonlinear predictive between others. This paper studied the control of a Single-Phase Current Source Inverter (SP-CSI) for multi-cell and three-phase applications. Cascaded H-Bridge (CHB-CSI) topology is formed by the stack of SP-CSI, with all advantages that CHB implies, as modularity and commutation noise reduction. However the control for single-phase systems cannot be achieved by Park Transformation if the current load or the current source are unbalanced. Therefore, this work proposed the Proportional Resonant Control (PRC) for the CHB based on CSIs, where the control study is formulated in continuous as well as discrete time. To complete this study a stability analysis is accomplished showing the feasibility of this control for CSI. Finally, simulation results are shown in order to corroborate the mathematical and theoretical analysis.

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Generalized Formulations and Solving Techniques for Selective Harmonic Elimination PWM Strategy: A Review

Rai

Chakravorty

2019

J. Inst. Eng. India Ser. B

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A New Modulation Method for a 13-Level Asymmetric Inverter Toward Minimum THD

Cited by 47 publications

References 25 publications

Time-Domain Minimization of Voltage and Current Total Harmonic Distortion for a Single-Phase Multilevel Inverter with a Staircase Modulation

Time-Domain Minimization of Voltage and Current Total Harmonic Distortion for a Single-Phase Multilevel Inverter with a Staircase Modulation

Resonant control for multi-cell cascaded H-Bridge topologies based on current source inverters

Generalized Formulations and Solving Techniques for Selective Harmonic Elimination PWM Strategy: A Review

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