A review of different multi-level inverter topologies for grid integration of solar photovoltaic system

Mehta, Shivinder; Puri, Vinod

doi:10.1016/j.ref.2022.10.002

Cited by 28 publications

(10 citation statements)

References 91 publications

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“…The operation of a bidirectional converter is used to control the charging and draining of the battery, which may be utilized in electric car charging stations for battery charging. The number of ways is reported in [5,[7][8][9]. The solar PV system can be utilized as one of the best renewable power generators if controlled properly.…”

Section: Introductionmentioning

confidence: 99%

A novel control technique for various modes of grid-connected PV system to improve power quality.

Tiwari

Agarwal

2023

Preprint

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A novel control strategy for a single grid-connected PV system with power backup in different modes of operation, including constant load, changing atmospheric circumstances, and load variable conditions. The proposed controller works with a large nonlinear load under different modes of operation. The controller operates in such a way that, it can achieve different functions such as maintaining power flow between the photovoltaic (PV) module to the grid, maintaining UPF (unity power factor) at the point of common coupling(reactive power compensation), synchronizing a grid with PV (grid current harmonics compensation) and regulates the operation of battery(charging or discharging) for electric vehicle application. Implementing the proposed controller reduces the complexity of the active shunt filter at the point of common coupling (PCC). A maximum Power Point (MPPT) controller, optimized with perturb & observe (P&O)algorithm is used to get optimum power from the PV module. Thesimulation findings validate the operation of the suggested controlstrategy in a grid-connected PV system with a battery backup topology.

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Section: Introductionmentioning

confidence: 99%

A novel control technique for various modes of grid-connected PV system to improve power quality.

Tiwari

Agarwal

2023

Preprint

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“…Multilevel three-phase inverters have become popular in recent years due to their ability to provide high-quality output voltage with reduced harmonic distortion. They are suitable for various applications, including renewable energy systems, electric vehicles, and industrial automation, where efficient and reliable power conversion is crucial [1][2][3]. The multilevel threephase inverters have also gained attention in grid-connected applications, where they help reduce power losses and increase system efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…The multilevel threephase inverters have also gained attention in grid-connected applications, where they help reduce power losses and increase system efficiency. Their popularity is expected to continue to grow as the demand for energy-efficient and clean energy solutions increases [1,2], [4][5][6][7]. Additionally, ongoing research and development in the field are expected to lead to further improvements in performance and cost-effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Harmonic reduction of grid-connected multilevel inverters using modulation of variable frequency carriers

Tran

2023

Journal of Electrical Engineering

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Multilevel three-phase inverters are increasingly popular due to their ability to generate high-quality output voltage with harmonic distortion lower than traditional inverters. They are used in various applications, including grid-connected renewable energy systems, motor drives, and power transmission systems, to improve efficiency and reduce costs. The control quality of grid-connected multilevel inverters depends on various factors such as the modulation technique, switching frequency, and control strategy. A good control system can achieve a balance between output current harmonics and switching losses, improving the efficiency and performance of the inverter. This paper suggests a technique for reducing current harmonics of grid-connected multilevel three-phase inverters using variable frequency carriers, without any corresponding increase of the number of switching commutations. The effectiveness of the suggested method has been confirmed through simulation results, which were compared to those obtained from the method of phase opposite disposition modulation using fixed frequency carriers.

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“…Various topologies of power electronic converters are used as interfaces between PV sources and the AC microgrid, including conventional two-level inverters and multilevel inverters. The latter provide specific technical benefits when compared to two-level inverters [6], such as lower losses and improved harmonic behavior, thus reducing or eliminating filtering requirements. In the literature, various topologies have been reported for high-and medium-power applications, including neutral point clamped inverter (NPCI) [7], flying capacitors inverter (FCI) [8], cascaded H-bridges inverter (CHBI) [9], and modular multilevel inverter (MMI) [10].…”

Section: Introductionmentioning

confidence: 99%

A Lyapunov-Based Model Predictive Control Approach for Photovoltaic Microgrid Integration via Multilevel Flying Capacitor Inverter

El Khlifi,

El Magri,

Lajouad

2023

E3S Web of Conf.

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In this study, we introduce a Model Predictive Control (MPC) approach based on a Lyapunov energy function, ensuring global asymptotic stability for a single-phase multilevel flying capacitor inverter (FCI) that interfaces with photovoltaic systems and microgrids. The defined cost function is derived from the Lyapunov energy function, harnessing the stored energy within the capacitor and inductor. This choice is rooted in the principle that as long as total energy is continuously dissipated, the system’s states will eventually reach the equilibrium point. Moreover, this cost function eliminates the need for tuning the weighting factors, a process that can be cumbersome and time-consuming due to the lack of clear guidelines. To assess the efficacy of the proposed control strategy, we conducted simulations using MATLAB/Simulink under varying weather conditions. The results obtained demonstrate that the MPC strategy not only ensures overall stability but also delivers high-quality sinusoidal current with minimal total harmonic distortion (THD), practical low steady-state error in the grid current, and rapid dynamic response, even in the face of changing weather conditions.

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A review of different multi-level inverter topologies for grid integration of solar photovoltaic system

Cited by 28 publications

References 91 publications

A novel control technique for various modes of grid-connected PV system to improve power quality.

A novel control technique for various modes of grid-connected PV system to improve power quality.

Harmonic reduction of grid-connected multilevel inverters using modulation of variable frequency carriers

A Lyapunov-Based Model Predictive Control Approach for Photovoltaic Microgrid Integration via Multilevel Flying Capacitor Inverter

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