A Highly Efficient and Reliable Inverter Configuration Based Cascaded Multilevel Inverter for PV Systems

Jain, Sachin; Sonti, Venu

doi:10.1109/tie.2016.2633537

Cited by 108 publications

(41 citation statements)

References 27 publications

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“…Jain and Sonti [56] have presented a new cascaded multilevel inverter topology referred as 'Highly Efficient & Reliable configuration based cascaded multilevel Inverter (HERC-CMLI)'. The proposed topology comprised of series connection of basic module as shown in Figure 9 and two power switches connected parallel to the load.…”

Section: H Highly Efficient and Reliable Configuration Based Cascaded mentioning

confidence: 99%

A Review on Reduced Switch Count Multilevel Inverter Topologies

2020

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Multilevel Inverters (MLIs) are becoming more and more popular in medium and high power applications. This is due to several inherent advantages of MLI over two-level inverters such as high-quality output, lower device ratings, and several others. While the classical topologies are still having applications in most of the key areas, there is a growing interest in newer multilevel topologies with an objective of reducing power semiconductor device count, gate drivers and/or isolated DC sources. In this paper, a comprehensive review of some of the recently proposed newer multilevel inverter topologies with the abovementioned objectives is presented. In this article, a detailed investigation in terms of total power semiconductor switch count, number of DC sources, passive component requirement, highest switch voltage rating, total standing voltage etc. has been presented.

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Section: H Highly Efficient and Reliable Configuration Based Cascaded mentioning

confidence: 99%

A Review on Reduced Switch Count Multilevel Inverter Topologies

2020

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“…By reducing the number of components, the power losses reduced, and the efficiency of the standalone/grid-connected PV system can be improved [17], [18]. Several single-phase and three-phase 5-level RSMLIs using reduced power devices have been proposed in [8], [19], [20] for grid-tied PV systems. These MLIs altogether uses eight switches per phase and comprises an H-bridge for changing the polarity at the output.…”

Section: Introductionmentioning

confidence: 99%

Closed-Loop Control and Performance Evaluation of Reduced Part Count Multilevel Inverter Interfacing Grid-Connected PV System

et al. 2020

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Multilevel inverters (MLIs) have drawn tremendous attention in the power sector. Application of MLI has grown extensively to improve the power quality and efficiency of the photovoltaic (PV) system. For an MLI interfacing PV system, the size, cost and voltage stress are the key constraints of the MLI that need to be minimized. This paper presents a novel reduced part count MLI interfacing single-stage grid-tied PV system along with a closed-loop control strategy. The proposed MLI consists of n repeating units and a level boosting circuit (LBC) that assists in generating 4n + 7 voltage levels instead of 2n + 3 levels. Three different algorithms are proposed for a proper selection of dc-link voltages to enhance the levels further. A comparative analysis is carried out to confirm the superiority of the developed MLI. The workability of the proposed MLI is investigated with a 1.3 kW PV system. The closed-loop control strategy ensures the maximum power tracking, dc-link voltage balancing, satisfactory operation of the MLI and injection of clean sinusoidal grid current under any dynamic changes. Comprehensive simulation analysis is carried out considering a 15-level MLI structure. Experimental tests further confirm the practicality of the topological advancement for a PV system under different dynamic conditions. INDEX TERMS Asymmetrical repeating unit, distributed maximum power point tracking, multilevel inverter, photovoltaic (PV) system, reduced components.

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“…The interconnection of such units increases the number of output voltage levels. An improved CHB-MLI is reported in [15], by reducing the leakage currents and hipe the efficiency, and it shows low switching and conduction losses. An asymmetric CHB-MLI based on trinary DC sources is reported in [16].…”

Section: Introductionmentioning

confidence: 99%

Binary Hybrid Multilevel Inverter-Based Grid Integrated Solar Energy Conversion System With Damped SOGI Control

et al. 2020

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This paper presents a binary hybrid multilevel inverter (BHMLI) based grid-connected solar energy conversion system (SECS), controlled by damped second-order generalized integral (DSOGI). The BHMLI architect has a cascaded half-bridge array, which modifies the DC-link of the H-bridge of the voltage source inverter, and results in approximate reference waveform. It reduces the dV/dt of the H-bridge switches and improves output waveform quality. The DSOGI control damps the oscillations and overshoots and provides longer service period of low power switches at transient conditions. It is implemented in the multilevel inverter application for the first time in literature. The SECS is designed to inject active power to the grid, and also mitigates the harmonic and reactive power demands of the load. The cascading of 'n' half-bridges and one H-bridge generate (2 (nC1) − 1) output voltage levels. The maximum power extraction from solar photovoltaic (PV) array is achieved through incremental conductance (IC) algorithm based maximum point tracking (MPPT) operation of the DC-DC converter. An isolated single-input multipleoutput single-ended primary inductance converter (SIMO-SEPIC) realizes it. SECS with 15-level BHMLI is analyzed with extensive simulation as well as with a hardware prototype. Moreover, the shunt active filter functionality of the system at various load conditions are verified and maintained the grid power quality within the IEEE-519 standard throughout the operation. The laboratory developed setup is tested for 5 kW, 400 V, three-phase system, and the experimental analysis at steady-state and dynamic variations of load-side and insolation variations validate the theoretical claims. INDEX TERMS Multilevel inverter, SIMO-SEPIC, solar PV, power quality.

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A Highly Efficient and Reliable Inverter Configuration Based Cascaded Multilevel Inverter for PV Systems

Cited by 108 publications

References 27 publications

A Review on Reduced Switch Count Multilevel Inverter Topologies

A Review on Reduced Switch Count Multilevel Inverter Topologies

Closed-Loop Control and Performance Evaluation of Reduced Part Count Multilevel Inverter Interfacing Grid-Connected PV System

Binary Hybrid Multilevel Inverter-Based Grid Integrated Solar Energy Conversion System With Damped SOGI Control

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