A New Multilevel Inverter Topology With Reduced Power Components for Domestic Solar PV Applications

Prem, P.; Sivaraman, P.; Almakhles, Dhafer; Padmanaban, Sanjeevikumar; Leonowicz, Zbigniew; Alagu, Matheswaran; Ali, Jagabar Sathik Mohamed

doi:10.1109/access.2020.3030721

Cited by 53 publications

(24 citation statements)

References 27 publications

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“…RSMLIs are also commonly used in domestic solar PV applications. A suitable configuration of PV cells can serve as an isolated DC source in an RSMLI design capable of meeting the required power demand [14]- [15]. The proposed application targets low-inductance, high-resistance domestic loads.…”

Section: Key Concerns Contribution and Article Organizationmentioning

confidence: 99%

“…Harmful reverse flowing currents of inductive loads is one of the obstacles that prevent further reduction in the number of switches. In addition to investigating the performance of inverters under resistive loads, [2]- [4], [10]- [14] have investigated the effects of inductive loads to address the current reverse flow problem.…”

Section: Key Concerns Contribution and Article Organizationmentioning

confidence: 99%

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A New Hybrid Cascaded Switched-Capacitor Reduced Switch Multilevel Inverter for Renewable Sources and Domestic Loads

Rezaei

Nayeripour

et al. 2022

IEEE Access

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This multilevel inverter type summarizes an output voltage of medium voltage based on a series connection of power cells employing standard configurations of low-voltage components. The main problems of cascaded switched-capacitor multilevel inverters (CSCMLIs) are the harmful reverse flowing current of inductive loads, the large number of switches, and the surge current of the capacitors. As the number of switches increases, the reliability of the inverter decreases. To address these issues, a new CSCMLI is proposed using two modules containing asymmetric DC sources to generate 13 levels. The main novelty of the proposed configuration is the reduction of the number of switches while increasing the maximum output voltage. Despite the many similarities, the presented topology differs from similar topologies. Compared to similar structures, the direction of some switches is reversed, leading to a change in the direction of current flow. By incorporating the lowest number of semiconductors, it was demonstrated that the proposed inverter has the lowest cost function among similar inverters. The role of switched-capacitor inrush current in the selection of switch, diode, and DC source for inverter operation in medium and high voltage applications is presented. The inverter performance to supply the inductive loads is clarified. Comparison of the simulation and experimental results validates the effectiveness of the proposed inverter topology, showing promising potentials in photovoltaic, buildings, and domestic applications. A video demonstrating the experimental test, and all manufacturing data are attached.INDEX TERMS Cascaded, multi-level inverter, self-charging, switched-capacitor, total standing voltage. NOMENCLATURE t0-t13Time for each pulse of the steps (s). Nlevel Level numbers of the inverters.

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Section: Key Concerns Contribution and Article Organizationmentioning

confidence: 99%

Section: Key Concerns Contribution and Article Organizationmentioning

confidence: 99%

A New Hybrid Cascaded Switched-Capacitor Reduced Switch Multilevel Inverter for Renewable Sources and Domestic Loads

Rezaei

Nayeripour

et al. 2022

IEEE Access

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“…However, for the increased number of levels, a greater number of switches are required to achieve the higher levels. So, a solution is needed to have a greater number of levels and have a reduced number of switching components [3]- [6].…”

Section: Introductionmentioning

confidence: 99%

21 Level Asymmetric Inverter without Inversion Circuit with Reduced Switch Count

VIKASH

Vijayaraja²,

Kumar

2021

Preprint

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This paper gives a new design for asymmetrical Multi-Level Inverter without Hbridge and with reduced number of switch components. The proposed model produces 21 levels with only 10 switches and 3 unequal voltages to obtain a maximum voltage output. The modes of operation of the proposed circuit are discussed in detail in this paper and there by framing the switching sequence for the proposed circuit. Simulation of the proposed inverter is done for loads like Resistive and Reactive. From the simulation results, inverter performance is analyzed in terms of THD.

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“…For a PV fed inverter, in producing a stable DC voltage, there is a need for a control technique. A typical PI controller realized in the standalone PV system to select a proper duty cycle of the DC-DC converter by comparing the converter output with reference [25]. It is not desirable to have control over the DC-DC converter with the MPPT technique and hence various topologies are proposed to solve this issue for the standalone solar system.…”

mentioning

confidence: 99%

A Novel Asymmetrical 21-Level Inverter for Solar PV Energy System With Reduced Switch Count

et al. 2021

Self Cite

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This article presents a novel asymmetrical 21-level multilevel inverter topology for solar PV application. The proposed topology achieves 21-level output voltage without H-bridge using asymmetric DC sources. This reduces the devices, cost and size. The PV standalone system needs a constant DC voltage magnitude from the solar panels, maximum power point tracking (MPPT) technique used for getting a stable output by using perturb and observe (P&O) algorithm. The PV voltage is boosted over the DC link voltage using a three-level DC-DC boost converter interfaced in between the solar panels and the inverter. The inverter is tested experimentally with various combinational loads and under dynamic load variations with sudden load disturbances. Total standing voltage with a cost function for the proposed MLI is calculated and compared with multiple topologies published recently and found to be cost-effective. A detailed comparison is made in terms of switches count, and sources count, gate driver boards, the number of diodes and capacitor count and component count level factor with the same and other levels of multilevel inverter and found to be the proposed topology is helpful in terms of its less TSV value, devices count, efficient and costeffective. In both simulation and experimental results, total harmonic distortion (THD) is observed to be the same and is lower than 5% which is under IEEE standards. A hardware prototype is implemented in the laboratory and verified experimentally under dynamic load variations, whereas the simulations are done in MATLAB/Simulink. INDEX TERMS Multilevel inverter, photovoltaic (PV) system, maximum power point tracking (MPPT), cost function (CF), TSV calculation, total harmonic distortion (THD).

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A New Multilevel Inverter Topology With Reduced Power Components for Domestic Solar PV Applications

Cited by 53 publications

References 27 publications

A New Hybrid Cascaded Switched-Capacitor Reduced Switch Multilevel Inverter for Renewable Sources and Domestic Loads

A New Hybrid Cascaded Switched-Capacitor Reduced Switch Multilevel Inverter for Renewable Sources and Domestic Loads

21 Level Asymmetric Inverter without Inversion Circuit with Reduced Switch Count

A Novel Asymmetrical 21-Level Inverter for Solar PV Energy System With Reduced Switch Count

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