A Novel Design of 7-Level Diode Clamped Inverter

Ali, Layth Mohammed Abd; Mohmmed, Haider Ahmed; Wahhab, Husam A.

doi:10.36478/jeasci.2019.3666.3673

Cited by 8 publications

(5 citation statements)

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“…Partial shading of the group of photovoltaic panels having a group of partially shaded photovoltaic panels (as at the 2 nd stage of the experiment) with evenly lit arrays and Intelligent Maximum Power selecting and PV arrays harmonizing Device installed 5. Partial shading of a group of photovoltaic panels (as at the 2 nd stage of the experiment) with individual matching converters installed on each shaded panel when connected in parallel with evenly lit arrays [10][11][12]. During the experiment, RSPPS-3-19 and RZV-31B rheostats were used as a load, in series with which an ammeter was turned on (APPA 503 multimeter, included in the SI State Register under number 49266-12 until 02.17.22, with an error of DC measurements: (0.2% + 40 count units) in the range from 40 mA to 10A).…”

Section: Conditions Materials and Methodsmentioning

confidence: 99%

Investigation of the losses of photovoltaic solar systems during operation under partial shading

Kuznetsov¹,

Abd²,

Кувшинов³

et al. 2020

J Appl Eng Science

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The article deals with research in solar power plants and Renewable Energy Laboratory. The purpose of research was to study the infl uencing of partial shading on the energy effi ciency of photovoltaic installations in various connection options. As the title implies the article describes a study of the possibilities of increasing their energy effi ciency when operating under different conditions. It is spoken in detail about replacement of "block connection" panels to the "in-line connection", in case of partial shading by the previous string. It is shown that substitution allows to obtain a signifi cantly higher power-up to 8 times. It is examined that the horizontal arrangement of the panels instead of the vertical, under the same conditions, also allows up to 5 times the power of the partially shaded array in the case "in-line connection" and by 34% in the case of a "block connection". It is analyzed that parallel connection of partially shaded photovoltaic array with normally illuminated, requires voltage matching, for the selection of electrical energy at the point of maximum power, which makes it possible to obtain much more energy from the shaded array. It is experimentally shown that when using the "Intelligent maximum power selection device" that implements the voltage matching, it is possible to increase the array power up to 4 times with partial shading of 3 panels of 18. It should be noted that the choice of methods that allow receiving energy from shaded panels through individual matching converters does not permit signifi cantly increasing the energy production of partially shaded array. It is experimentally shown that as a result of their use the array power does not increase by more than 2.5%. The results of research can be used in the design of new installations based on photovoltaic cells and the modernization of existing ones.

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Section: Conditions Materials and Methodsmentioning

confidence: 99%

Investigation of the losses of photovoltaic solar systems during operation under partial shading

Kuznetsov¹,

Abd²,

Кувшинов³

et al. 2020

J Appl Eng Science

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“…The quantity of voltage levels present in the MLI plays a significant role in determining the quality of the output waveform. A greater number of voltage levels results in a more accurate representation of a pure sine wave [14].…”

Section: Figure 2: Schematic Description Of the Major Circuit Structurementioning

confidence: 99%

Designing of a PSO-Based Adaptive SMC With a Multilevel Inverter for MPPT of PV Systems Under Rapidly Changing Weather Conditions

Anssari,

Badamchizadeh,

Ghaemi

2024

IEEE Access

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This study discusses the widespread problem of chattering phenomena and high frequency oscillations in sliding mode controllers (SMCs) used for maximum power point (MPP) tracking (MPPT) in photovoltaic (PV) systems. Moreover, this study introduces an adaptive sliding mode controller (ASMC) made just for PV panels with MPPT capability to address these problems. The main goal of the control method is to make PV systems more reliable and effective by precisely tracking the MPP, even when the weather quickly changes. This strategy demonstrates superior static and dynamic responsiveness compared with traditional methods. The particle swarm optimization (PSO) algorithm is employed to determine the best gains for the SMC method, specifically for controlling the variable step of the standard perturb and observe (P&O) algorithm. This algorithm used in the study with a Soltech 1STH-250-WH module is linked to a boost DC-DC converter. The aforementioned converter provided power to a resistive load, which was then controlled by a voltage regulator. Subsequently, the research highlights the utilization of a new voltage source inverter: a 9-level diode clamp inverter (DCI) employed to mitigate harmonics, hence enhancing power quality through the reduction of its components and generating a sinusoidal AC voltage that has multiple uses.

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“…As storage device prices are anticipated to decline, it may also provide an integrated battery solution and make use of a solar tracking system to improve the system's overall efficiency. Today, grid-connected PV systems predominate, with off-grid or standalone systems making up a tiny portion of the market [16], [17]. Solar panels are the components that convert receiving light into electrical energy.…”

Section: Photovoltaics Systemmentioning

confidence: 99%

“…Almost the entire country of Iraq could be used to construct large-scale solar power plants. Iraq has very hot summers and mild winters, with the peak temperatures in June, July, and August between 43 °C and 50 °C, and the lowest in January between 1 °C and 8 °C [16], [17]. Dry air masses from the Mediterranean impact the country from June to September.…”

Section: Geographical Nature and Impact Of Iraqi Climate In The Use O...mentioning

confidence: 99%

Energy generation by crystalline silicon photovoltaic network per meter square in Iraq

Ali

Abdala²,

Al-khaykan³

et al. 2023

IJECE

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<span lang="EN-US">Iraqi people have been without energy for nearly two decades, even though their geographic position provides a high intensity of radiation appropriate for the construction of solar plants capable of producing significant quantities of electricity. Also, the annual sunny hours in Iraq are between 3,600 to 4,300 hours which makes it perfect to use the photovoltaics arrays to generate electricity with very high efficiency compared to many countries, especially in Europe. This paper shows the amount of electric energy generated by the meter square of crystalline silicon in the photovoltaic (PV) array that already installed in 18 states in Iraq for each month of the year. The results of the meter-square of PV array in three tracking positions are presented in this paper. This paper shows that the average electricity generated in North cities (Dohuk, Al-Sulaymaniyah, and Erbil) are less than the southern cities in the winter season (three positions) by about 40-50%. Iraq has a stable PV electrical generation during all the year in all regions except the North cities while the highest cities in electricity generation are (Najaf and Al-Anbar).</span>

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A Novel Design of 7-Level Diode Clamped Inverter

Cited by 8 publications

References 0 publications

Investigation of the losses of photovoltaic solar systems during operation under partial shading

Investigation of the losses of photovoltaic solar systems during operation under partial shading

Designing of a PSO-Based Adaptive SMC With a Multilevel Inverter for MPPT of PV Systems Under Rapidly Changing Weather Conditions

Energy generation by crystalline silicon photovoltaic network per meter square in Iraq

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