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

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Standard

A Novel Asymmetrical 21-Level Inverter for Solar PV Energy System with Reduced Switch Count. / Khasim, Shaik Reddi; Dhanamjayulu, C.; Padmanaban, Sanjeevikumar; Holm-Nielsen, Jens Bo; Mitolo, Massimo.

In: IEEE Access, Vol. 9, 2021, p. 11761-11775.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Khasim, SR, Dhanamjayulu, C, Padmanaban, S, Holm-Nielsen, JB & Mitolo, M 2021, 'A Novel Asymmetrical 21-Level Inverter for Solar PV Energy System with Reduced Switch Count', IEEE Access, vol. 9, pp. 11761-11775. https://doi.org/10.1109/ACCESS.2021.3051039

APA

Khasim, S. R., Dhanamjayulu, C., Padmanaban, S., Holm-Nielsen, J. B., & Mitolo, M. (2021). A Novel Asymmetrical 21-Level Inverter for Solar PV Energy System with Reduced Switch Count. IEEE Access, 9, 11761-11775. https://doi.org/10.1109/ACCESS.2021.3051039

CBE

Khasim SR, Dhanamjayulu C, Padmanaban S, Holm-Nielsen JB, Mitolo M. 2021. A Novel Asymmetrical 21-Level Inverter for Solar PV Energy System with Reduced Switch Count. IEEE Access. 9:11761-11775. https://doi.org/10.1109/ACCESS.2021.3051039

MLA

Vancouver

Khasim SR, Dhanamjayulu C, Padmanaban S, Holm-Nielsen JB, Mitolo M. A Novel Asymmetrical 21-Level Inverter for Solar PV Energy System with Reduced Switch Count. IEEE Access. 2021;9:11761-11775. https://doi.org/10.1109/ACCESS.2021.3051039

Author

Khasim, Shaik Reddi ; Dhanamjayulu, C. ; Padmanaban, Sanjeevikumar ; Holm-Nielsen, Jens Bo ; Mitolo, Massimo. / A Novel Asymmetrical 21-Level Inverter for Solar PV Energy System with Reduced Switch Count. In: IEEE Access. 2021 ; Vol. 9. pp. 11761-11775.

Bibtex

@article{bda1205b3bd84d1e86237c7340b2e259,
title = "A Novel Asymmetrical 21-Level Inverter for Solar PV Energy System with Reduced Switch Count",
abstract = "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 (PO) 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 cost-effective. 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.",
keywords = "Cost function (CF), Inverters, Maximum power point trackers, Maximum power point tracking (MPPT), Multilevel inverter, Multilevel inverters, Photovoltaic (PV) system, Photovoltaic cells, Solar panels, Through-silicon vias, Topology, Total harmonic distortion (THD), TSV Calculation",
author = "Khasim, {Shaik Reddi} and C. Dhanamjayulu and Sanjeevikumar Padmanaban and Holm-Nielsen, {Jens Bo} and Massimo Mitolo",
note = "Publisher Copyright: CCBY Copyright: Copyright 2021 Elsevier B.V., All rights reserved. M1 - 9320488",
year = "2021",
doi = "10.1109/ACCESS.2021.3051039",
language = "English",
volume = "9",
pages = "11761--11775",
journal = "IEEE Access",
issn = "2169-3536",
publisher = "Institute of Electrical and Electronics Engineers",

}

RIS

TY - JOUR

T1 - A Novel Asymmetrical 21-Level Inverter for Solar PV Energy System with Reduced Switch Count

AU - Khasim, Shaik Reddi

AU - Dhanamjayulu, C.

AU - Padmanaban, Sanjeevikumar

AU - Holm-Nielsen, Jens Bo

AU - Mitolo, Massimo

N1 - Publisher Copyright: CCBY Copyright: Copyright 2021 Elsevier B.V., All rights reserved. M1 - 9320488

PY - 2021

Y1 - 2021

N2 - 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 (PO) 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 cost-effective. 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.

AB - 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 (PO) 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 cost-effective. 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.

KW - Cost function (CF)

KW - Inverters

KW - Maximum power point trackers

KW - Maximum power point tracking (MPPT)

KW - Multilevel inverter

KW - Multilevel inverters

KW - Photovoltaic (PV) system

KW - Photovoltaic cells

KW - Solar panels

KW - Through-silicon vias

KW - Topology

KW - Total harmonic distortion (THD)

KW - TSV Calculation

U2 - 10.1109/ACCESS.2021.3051039

DO - 10.1109/ACCESS.2021.3051039

M3 - Journal article

VL - 9

SP - 11761

EP - 11775

JO - IEEE Access

JF - IEEE Access

SN - 2169-3536

ER -