A new bidirectional hybrid multilevel inverter with 49-level output voltage using a single dc voltage source and reduced number of on components

Mesquita, Samuel Jo de; Antunes, Fernando Luiz Marcelo; Daher, Sérgio

doi:10.1016/j.epsr.2016.10.041

Cited by 13 publications

(7 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The authors of [20] present a three-phase, three-level neutral-point-clamped quasi-Z-source inverter, as a new solution for PV applications. In a similar way, a DC/DC state is in described in the literature [21] to increase the performance of the system.By considering the renewable applications, for a PV plant, because of the downward trend in the price for the PV modules, the costs of the inverters are progressively standing out while computing the entire cost of the plant [34][35][36][37]. Efficiency, size, weight, and reliability have influenced the cost of producing inverters.…”

mentioning

confidence: 99%

See 1 more Smart Citation

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

2018

View full text Add to dashboard Cite

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...

show abstract

mentioning

confidence: 99%

“…By considering the renewable applications, for a PV plant, because of the downward trend in the price for the PV modules, the costs of the inverters are progressively standing out while computing the entire cost of the plant [34][35][36][37]. Efficiency, size, weight, and reliability have influenced the cost of producing inverters.…”

mentioning

confidence: 99%

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

2018

View full text Add to dashboard Cite

show abstract

“…They suffer however from increased voltage stress on the switches and from power dissipation due to the increasing number of series diodes [18]. Several SS MLIs are proposed in [7,9,20,22]. Unlike the SC configuration where capacitors are switched in series/parallel combinations, the SS configuration achieves the voltage levels by using multiple DC sources.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, research on new MLIs has focused on topologies that require a minimal number of switches, diodes, gate drivers and DC sources as the number of voltage levels increases [7][8][9][17][18][19][20][21]. These new topologies try to minimize voltage stress on switches and the number of switches in the current path (losses).…”

Section: Introductionmentioning

confidence: 99%

“…The operations of such MW-scale plants require high-voltage/-power multilevel inverters (MLIs), and as a result, the usage of MLIs has proliferated [1,2]. MLIs can be categorized into three main types: neutral-point-clamped (NPC) [2,3], flying-capacitor (FC) [4,5] and cascaded H-bridge (CHB) topologies [6][7][8][9]. It should also be pointed out that some researchers have proposed hybrids of the above types [10,11].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

New Switched-Dual-Source Multilevel Inverter for Symmetrical and Asymmetrical Operation

et al. 2018

View full text Add to dashboard Cite

Abstract:The increasing integration of large solar PV and wind farms into the power grid has fueled, over the past two decades, growing demands for high-power, high-voltage, utility-scale inverters. Multilevel inverters have emerged as the industry's choice for megawatt-range inverters because of their reduced voltage stress, capability for generating an almost-sinusoidal voltage, built-in redundancy and other benefits. This paper presents a novel switched-source multilevel inverter (SS MLI) architecture. This new inverter shows superior capabilities when compared to existing topologies. It has reduced voltage stress on the semiconductor, uses fewer switches (i.e., reduced size/weight/cost) and exhibits increased efficiency. The proposed SS MLI is comprised of two voltage sources (V 1 , V 2 ) and six switches. It is capable of generating five-level output voltage in symmetric mode (i.e., V 1 = V 2 ) and seven-level output voltage in asymmetric mode (i.e., V 1 = V 2 ). We present simulations results (using MATLAB R /Simulink R ) for five-and seven-level output voltages, and they strongly support the validity of the proposed inverter. These positive results are further supported experimentally using a laboratory prototype.

show abstract

Isolation‐based bidirectional generalized step‐up multilevel converter with optimized device count

Kumar Tiwari,

Kumar Singh,

Behari Dev Choudhury

et al. 2024

Circuit Theory & Apps

View full text Add to dashboard Cite

SummaryThis article describes a generalized single‐phase multiwinding step‐up transformer‐based multilevel converter with optimized device count. The proposed topology comprises of a single dc source, eight switches (four unidirectional and four bidirectional) and a single high‐frequency multiwinding transformer. Phase disposition pulse width modulation (PDPWM) is used for the level creation. The proposed converter is examined qualitatively and quantitatively using the total number of transformers, PWM control method, switch count, voltage stress, and the number of gate drivers, all of which are favorable. All elements of transformer selection, winding requirements, and comparative study have been thoroughly examined. A thorough Lagrange multiplier method has been applied to minimize the copper losses and optimize the multiwinding transformer (MWT) winding. The proposed converter simulations are performed using the MATLAB/SIMULINK environment. Further, the validation of the result is confirmed by a hardware setup of 0.9 kW.

show abstract

A new bidirectional hybrid multilevel inverter with 49-level output voltage using a single dc voltage source and reduced number of on components

Cited by 13 publications

References 24 publications

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

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

New Switched-Dual-Source Multilevel Inverter for Symmetrical and Asymmetrical Operation

Isolation‐based bidirectional generalized step‐up multilevel converter with optimized device count

Contact Info

Product

Resources

About