Grid Connected Multilevel Inverter for Renewable Energy Applications

Mahalakshmi, R.; Thampatty, K. C. Sindhu

doi:10.1016/j.protcy.2015.10.076

Cited by 38 publications

(11 citation statements)

References 9 publications

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“…Multi-level inverters have come a long way since the first time proposed for High Voltage DC applications. In last few years they have been widely used in electric motor drives [1], renewable energies integration into power systems [2], [3] charging infrastructures for battery system [4], and flexible AC transmission (FACTS) systems [5], [6]. The authors in [5] proposed a fault detection method that is capable of detecting low fault current due to the inverters limitations.…”

Section: Introductionmentioning

confidence: 99%

Control of Cascaded H-Bridge Multilevel Inverter Based on Optimum Regulation of Switching Angles, and the FPGA Implementation

Firouzkouhi

2019

EJECE

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A new concept in control of cascaded H-Bridge multi-level inverters is proposed in this paper. According to this concept, switching angles are considered to be independent from the fundamental voltage. A polynomial term is presented to show the relation between switching angles and DC voltages. Based on this concept, Total Harmonic Distortion (THD) calculations are updated and proved to be independent from the fundamental voltage. Thus, once calculated for minimum THD, the switching pattern can be used for any required level of output voltage. To examine the effectiveness of the proposed method, it is applied in control of an eleven level inverter. The simulation results are demonstrated and verified through experiments with a setup controlled by Xilinx SPARTAN3 family FPGA (XC3S400-PQG208).

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Section: Introductionmentioning

confidence: 99%

Control of Cascaded H-Bridge Multilevel Inverter Based on Optimum Regulation of Switching Angles, and the FPGA Implementation

Firouzkouhi

2019

EJECE

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“…Various power electronics techniques are available for conversion of dc to ac with improved power quality. Multilevel inverter topologies have been introduced in literature [7][8], generating a staircase like voltage and current waveform.There are some considerable multi-level inverter types available like the cascaded H-Bridge, diode clamped, flying capacitor, magnetic coupled etc. The main feature of these inverters has to generate minimum harmonic components in load voltage as well as in load current.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a Solar PV based Grid Tied Multilevel Inverter Scheme for Linear and Non Linear Load

Ahmad*¹,

Kirmani²

2019

IJRTE

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This paper presents the performance of Solar Photo Voltaic (SPV) based grid connected multilevel inverter scheme having linear and nonlinear load connected at the Point of Common Coupling (PCC). Initially the analysis was carried out for the complete inverter circuit resulting in a slightly higher harmonics in PCC voltage and current, which can be further reduced to a lower value by connecting a filter. For a linear RL load, due to the filter, the THD in PCC voltage is reduced from 13% to below 5% (IEEE standard) and the THD in grid current decreases to below 5% from 14.8%. Similarly for a nonlinear load at PCC, a Diode Bridge, the harmonics in PCC voltage and the grid current can be further reduced to the lower level by connecting filter. The results obtained from simulation using SIMULINK/MATLAB Software are tabulated for SPV based grid tied system and also explained graphically.

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“…As a result of decreasing, power losses of switching, dV/dt, peak inverse voltage (PIV) of switches, and electromagnetic interference (EMI) as strong capabilities of multilevel inverters, with no regarding of creating a high‐step quasi‐sinusoidal voltage, they can be feasibility applied in high‐voltage levels . Correspondingly, low‐harmonic component of created voltage is another salient feature of such multilevel structures without increasing the switching frequency or reduction of the inverter output power …”

Section: Introductionmentioning

confidence: 99%

“…[4][5][6][7][8] As a result of decreasing, power losses of switching, dV/dt, peak inverse voltage (PIV) of switches, and electromagnetic interference (EMI) as strong capabilities of multilevel inverters, with no regarding of creating a high-step quasisinusoidal voltage, they can be feasibility applied in high-voltage levels. [9][10][11] Correspondingly, low-harmonic component of created voltage is another salient feature of such multilevel structures without increasing the switching frequency or reduction of the inverter output power. [12][13][14] Owing to the eminent advances in the field of power electronics, they have been extensively employed in several industrial applications, eg, high-voltage direct current (HVDC), flexible alternative current transmission system (FACTS), photovoltaic (PV), uninterruptible power supply (UPS), and industrial drive applications.…”

mentioning

confidence: 99%

Design and analysis of novel optimal harmonic elimination strategy based on MOPSO to obliterate low‐order harmonics of odd‐nary cascaded transformers‐based multilevel inverter

Falehi

Rafiee

2018

Math Methods in App Sciences

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Creating a high‐step staircase sinusoidal voltage taking into account of low number of switches is recognized as a significant challenge ahead of inventors of power electronics. This paper suggests a maiden cascaded transformer‐based multilevel inverter to effectively develop and solve the abovementioned challenge. Hence, via appending the bidirectional switches to the capacitors of submultilevel inverter as well as low‐frequency transformers, the proposed inverter structure can flexibly operate as so‐called “odd‐nary asymmetrical multilevel inverter.” From the perspective of low‐order harmonics produced by all inverter structures, apart from inverter type, it is essential that an effective strategy to be implemented to eliminate these harmonics. Toward this subject, kerf‐style Selective Harmonic Elimination Pulse Width Modulation (SHEPWM) has been scheduled as an optimization problem. Because of nature of multiobjective state of the problem, application of the multiobjective optimization technique is inevitable. Considering significant performance of Multi Objective Particle Swarm Optimization (MOPSO) for solving the nonlinear objectives, the elimination of fifth, seventh, and 11th harmonics is formulated by relevant fitness functions based on MOPSO. Putting it all together, the relevant analytical study accompanying both the simulation and experimental results has transparently verified the performance of the proposed multilevel inverter. Furthermore, elimination of all three designated low‐order harmonics, ie, fifth, seventh, and 11th harmonics using MOPSO‐based kerf‐style SHEPWM strategy has been well confirmed.

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Grid Connected Multilevel Inverter for Renewable Energy Applications

Cited by 38 publications

References 9 publications

Control of Cascaded H-Bridge Multilevel Inverter Based on Optimum Regulation of Switching Angles, and the FPGA Implementation

Control of Cascaded H-Bridge Multilevel Inverter Based on Optimum Regulation of Switching Angles, and the FPGA Implementation

Performance Analysis of a Solar PV based Grid Tied Multilevel Inverter Scheme for Linear and Non Linear Load

Design and analysis of novel optimal harmonic elimination strategy based on MOPSO to obliterate low‐order harmonics of odd‐nary cascaded transformers‐based multilevel inverter

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