Modified T-type topology of three-phase multi-level inverter for photovoltaic systems

Ouchatti, Abderrahmane; Majdoul, Redouane; Moutabir, Ahmed; Taouni, Abderrahim; Touati, Abdelouahed

doi:10.11591/ijece.v12i1.pp262-268

Cited by 3 publications

(3 citation statements)

References 16 publications

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“…A wide range of industrial applications have benefited from the development of multilevel inverters (MLIs) in recent years [6], [7] including active power filtering, motor drive applications, distributed generation systems, FACTS applications, UPS systems, induction heating applications, and many more [8], [9]. MLIs have several advantages over traditional two-level inverters, including lower total harmonic distortion (THD), reduced voltage stress in power switches, output filters are smaller, and immunity to electromagnetic interference [10], [11].…”

Section: Introductionmentioning

confidence: 99%

A new flying capacitor multilevel converter topology with reduction of power electronic components

Ahmed

Hassan

Saleh

2023

IJPEDS

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High power capacity and reliability are characteristics of multilevel inverters. The using a collection of DC sources can produce a terminal voltage that is very close to sinusoidal. The power quality can be improved by adding more levels, but this makes the control system more complicated and expensive. The number of power components in a multilevel inverter has been studied for decades. So, research needs to be done on multilevel inverter configurations to find ways to add levels with fewer power switches than with traditional topologies and those that have already been proposed. In this research, a new power-efficient arrangement of a flying-capacitor inverter is introduced. In order to illustrate the suggested topology, a seven-level multilevel inverter is constructed and demonstrated in a simplified form. Fewer power components, including power switches, capacitors, and gate driver circuits, are required in this topology than in other topologies described in the recent literature, which is one of its main advantages. The improvement mentioned above can be seen in the way this topology works, which is shown by the characteristics of the circuit. MATLAB/Simulink R2021a is used to simulate and verify the circuit to ensure the proposed topology is correct.

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Section: Introductionmentioning

confidence: 99%

A new flying capacitor multilevel converter topology with reduction of power electronic components

Ahmed

Hassan

Saleh

2023

IJPEDS

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“…The control circuit used a modified absolute sinusoidal pulse width modulation approach, and the output voltage and current's THD values were 3.6% and 0.84%, respectively. Ouchatti et al [10], developed an 8-PV cell DC source and 27-switches are utilized to create a 9-level three-phase inverter using a modified hybrid multilevel PWM approach. In 2022 [11], a 15-level inverter was created using 3-DC sources and 7-switches with 3-diodes.…”

Section: Introductionmentioning

confidence: 99%

Design a 25-level inverter topology with less switching devices fed by PV systems

Ali,

Abdulghafoor,

Antar

2023

IJPEDS

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<span lang="EN-US">Multilevel inverter (MLI) technology has lately emerged as one of the most popular solutions for high power and medium voltage energy management. MLIs have many benefits and require more switches for higher levels, which are considered disadvantaged. This could result in large size and extremely expensive cost for the MLI. So, in order to overcome this problem, a new MLI topology is proposed with reduced number of switches. A 25‐level inverter fed by isolated unequal photovoltaic panels as DC sources is chosen in this study. The structure of DC voltages is chosen as (1:1:5:5) Vdc. The proposed approach, which is created using twelve switches, is ideally suited for a high-power application. Multi-carrier with a sinusoidal PWM technique is programmed as a controller. According to the simulation findings, a single-phase system's output voltage and current total harmonic distortion (THD) values are 1.2% and 0.462%, respectively, while a three-phase system's values are 1.07% and 0.342%. These findings prove that the power circuit and investigation were successful.</span>

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“…The T-type converter is an advanced topology possessing the advantages of low conduction losses, high efficiency, a relatively low number of switches and fault tolerance. A single-phase T-type converter is based on a full H-bridge converter connected to an auxiliary bidirectional switch combination, giving the converter a four-quadrant functioning possibility (Ceglia et al, 2006;Ouchatti et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Integrated Model Predictive Control of a Single-Phase Multilevel T-type Converter for a Photovoltaic Grid Connected System under Failure Conditions

Boudja

Barra

2023

Power Electronics and Drives

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The article presents two contributions: the first is an optimised control structure for photovoltaic grid connected systems (PVGCSs). The power chain is composed of two cascaded power converters, namely, a boost converter and a five-level T-type multilevel converter. Traditionally, each power converter is controlled by a separate mode control (SMC) from the other, which is computationally intensive since each converter requires its own control system, which is not practical. The suggested control, called integrated finite set model predictive control (IFS-MPC), allows controlling cascaded converters at the same time in one stage, instead of controlling them separately. Consequently, the overall implementation system is widely reduced. The second contribution of the article is a modified IFS-MPC called modified integrated finite set-model predictive control (M-IFS-MPC), which ensures the correct functioning of the grid-tied PV system under certain faults in converter components. Indeed, when one of the DC-link capacitors fails or when one of the auxiliary switches breaks down, by selecting an appropriate choice of the DC-link capacitors’ voltage reference, the proposed design allows a normal operation without intervention on the power circuit.

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Modified T-type topology of three-phase multi-level inverter for photovoltaic systems

Cited by 3 publications

References 16 publications

A new flying capacitor multilevel converter topology with reduction of power electronic components

A new flying capacitor multilevel converter topology with reduction of power electronic components

Design a 25-level inverter topology with less switching devices fed by PV systems

Integrated Model Predictive Control of a Single-Phase Multilevel T-type Converter for a Photovoltaic Grid Connected System under Failure Conditions

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