Implementation of a modified SVPWM-based three-phase inverter with reduced switches using a single DC source for a grid-connected PV system

Mani, Venkatesan; Ramachandran, Rajeswari; Devarajan, N.

doi:10.3906/elk-1404-423

Cited by 5 publications

(4 citation statements)

References 26 publications

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“…where V 1,rms is the effective value of the fundamental component and V rms represents the effective value of the whole waveform. The amount of V rms for an n -level waveform, with specified parameters in Figure 1b, can be simply calculated by the well-known definition of the effective value (see (5)). The effective value of the fundamental component is also calculated, considering its given amplitude in (2).…”

Section: Conventional Omthd Techniquementioning

confidence: 99%

“…Multilevel inverters, because of their numerous advantages in comparison with conventional two-level high frequency PWM converters, can be employed in medium and high power applications such as adjustable speed drives (ASDs) [1], flexible AC transmission system (FACTS) devices [2], and renewable energy sources, as interface converters [3][4][5]. Producing very low distorted waveform, drawing input current with low distortion, and possibility of operating at lower switching frequencies, which result in lower switching losses, are some attractive features of multilevel inverters.…”

Section: Introductionmentioning

confidence: 99%

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An improved OMTHD technique for an $n$-level cascaded multilevel inverter with adjustable DC sources

Toodeji¹

2017

Turk J Elec Eng & Comp Sci

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Optimal minimization of total harmonic distortion (OMTHD) and selective harmonic elimination (SHE) switching techniques are usually employed to reduce generated harmonics of multilevel inverters. In the former technique, the THD of waveform is reduced without elimination of any harmonic order and the latter, in contrast, eliminates selected harmonic orders. In this paper, the harmonic elimination ability of the SHE technique is added to OMTHD and an improved OMTHD technique is proposed for an n -level cascaded multilevel inverter with adjustable DC sources. The main novelty of this switching technique is elimination of some harmonic orders, beside THD minimization. Moreover, optimal DC voltages and switching angles can be estimated simpler than conventional OMTHD technique. To show the advantages of the proposed technique, which is formulated for an n -level inverter, a 7-level one is simulated in MATLAB/Simulink with both improved and conventional OMTHD techniques. The obtained results show the elimination of two elective harmonics as well as THD minimization. Moreover, experiments on a 7-level inverter verify the superiority of the proposed technique.

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Section: Conventional Omthd Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An improved OMTHD technique for an $n$-level cascaded multilevel inverter with adjustable DC sources

Toodeji¹

2017

Turk J Elec Eng & Comp Sci

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“…The IMC has two-stage converters; one is a rectifier stage, and another one is an inverter stage, without DC-link. The advantages of the IMC are easy to design, simple commutation, less number of a power switch, and the possibility of multiple-phase output voltage [23][24][25][26]. Therefore, the IMC is used in different applications than the DMC.…”

Section: Introductionmentioning

confidence: 99%

An Indirect Matrix Converter Fed Linear Induction Motor Drive by Considering Time-Varying Parameters

Nagaraju¹,

Sukumar²,

Marutheswar³

2020

MMEP

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An indirect matrix converter fed linear induction motor drive by considering timevarying parameters is presented in this paper. The operation and closed-loop control of the LIM is difficult due to its continuous time-varying parameters such as an air gap flux, end effect, saturation, and iron loss. Hence, the accurate mathematical model is required by considering all these effects. In this paper, the LIM is modeled by splitting the flux and current into two components, and the end and saturation effects are also considered. The indirect vector control of SLIM requires the AC to DC and DC to AC with a large capacitor. This large capacitor creates limitations such as the size of the converter increases, the life of converter decreases, and bidirectional power flow is not possible. These limitations are overcome by using direct AC to AC converter is called a matrix converter. In this paper, the indirect matrix converter is used in the indirect vector control technique in place of AC to DC and DC to AC converter. The indirect matrix converter is controlled with space vector modulation. The transient and steadystate performance of LIM, such as Thrust force, velocity, and matrix converter output voltage, input, and output currents, virtual DC link voltage, and Total Harmonics Distraction of currents are verified through using Matlab. The obtained simulation results are verified by an experimental setup with Dspace DS1104 kit.

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“…MLIs having numerous features such as low distortion output waveform, reduced voltage stress, reduced EMI, operate with lower switching frequency and higher efficiency [1]. MLIs are classified into three types, they are (i) Diode clamped MLIs (ii) Flying capacitor MLIs (iii) Cascaded MLIs.…”

Section: Introductionmentioning

confidence: 99%

FPGA based quasi z-source cascaded multilevel inverter using multicarrier PWM techniques

Kalilasam¹,

Mani²

2018

J. vibroeng.

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Abstract. FPGA based Quasi Z-Source Cascaded Multilevel Inverter (Quasi Zs-CMLI) using multicarrier PluseWidth Modulation (PWM) techniques are presented in this paper. Multicarrier based PWM techniques have been proposed for seven level Quasi Zs-CMLI and implemented using Field Programmable Gate Array (FPGA). For generating gating pulses to the inverter switches, Phase Disposition (PD), Inverted Phase Disposition (IPD), Phase Opposition Disposition (POD) and Alternative Phase Opposition Disposition (APOD) techniques are programmed on FPGA. In the proposed system, three solar PV emulator modules are used. These are acting as input source to the inverter. Finally, THD comparison made between different carrier based modulation with shoot through and non-shoot through the states. The proposed quasi Zs-CMLI and PWM techniques are verified through MATLAB/Simulink. For confirmation of simulation results, A laboratory prototype model have been implemented using FPGA. The capture hardware results are matched with simulation results.

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Implementation of a modified SVPWM-based three-phase inverter with reduced switches using a single DC source for a grid-connected PV system

Cited by 5 publications

References 26 publications

An improved OMTHD technique for an $n$-level cascaded multilevel inverter with adjustable DC sources

An improved OMTHD technique for an $n$-level cascaded multilevel inverter with adjustable DC sources

An Indirect Matrix Converter Fed Linear Induction Motor Drive by Considering Time-Varying Parameters

FPGA based quasi z-source cascaded multilevel inverter using multicarrier PWM techniques

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