Comprehensive performance analysis of model predictive current control based on-grid photovoltaic inverters

Podder, Amit Kumer; Tariquzzaman, Md.; Habibullah, M.

doi:10.1088/1742-6596/1432/1/012051

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…Electrical drive and power converter predictive control is a serious move towards a new approach that will improve the reliability of alternative energy control and management systems [10], [11]. Through the use of switching mode operation, in which power semiconductor devices are operated in ON / OFF mode, the key characteristics of modern power electronic converters (fast operation and high power densities, high performance, reduced weight and size) are obtained [3], [6], [13]. Based on an accurate agreement that clarifies the various safety standards that must be followed during the connection, concluded between the consumer and the utility company, the PV system is connected.…”

Section: Introductionmentioning

confidence: 99%

Design of an effective control for grid-connected PV system based on FS-MPC

et al. 2021

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This paper is deals in part of research that has been conducted on modern means in the basis of power electronics. Harmonic cancellation of distribution network is currently a serious problem, especially in high electrical industry. The main source of harmonic currents injected into the network requires attention to reduce the current harmonic levels. Energy quality is a fairly broad concept which covers both, the quality of power supply (voltage wave) and these of the currents injected into the electrical grid. In this context, a modern approved preventive solution in purpose to limit the rate of harmonic disturbance caused by the deferent power electronics systems connected to the grid must take action. It appears necessary to develop the quality and stability of the grid and develop curative devices such as converters provided with a control device making the current drawn on the most sinusoidal network possible. This paper proposes a control of tow stage grid tied PV system established on finite set model predictive control (FS-MPC). The design of FS-MPC is developed depending on the structure and operating principle associated to three-phase inverter tied to the grid. In this context, we have also employed the structure of MPPT controller (P&O) and PI controller for adjustment of the DC-bus voltage. To set the proposed control scheme, numerical simulations are carried out using Matlab/Simulink 2013b. The obtained results demonstrate that the proposed control scheme assure the tracking of MPP and the injection of extracted PV power into the grid with high current quality under irradiation changes.

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Section: Introductionmentioning

confidence: 99%

Design of an effective control for grid-connected PV system based on FS-MPC

et al. 2021

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“…In an on-grid photovoltaic (PV) system, the inverter is considered the most vital component of the system. An apposite inverter controlling is necessary for achieving moderate power loss, total harmonic distortion (THD), and the safety and reliability of the grid [1,2]. Various types of control mechanisms, including linear (proportional-integral (PI) [3,4], proportional-resonant (PR) [5], repetitive [6], deadbeat control [7], etc.)…”

Section: Introductionmentioning

confidence: 99%

Power Loss Analysis of Solar Photovoltaic Integrated Model Predictive Control Based On-Grid Inverter

et al. 2020

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This paper presents a finite control-set model predictive control (FCS-MPC) based technique to reduce the switching loss and frequency of the on-grid PV inverter by incorporating a switching frequency term in the cost function of the model predictive control (MPC). In the proposed MPC, the control objectives (current and switching frequency) select an optimal switching state for the inverter by minimizing a predefined cost function. The two control objectives are combined with a weighting factor. A trade-off between the switching frequency (average) and total harmonic distortion (THD) of the current was utilized to determine the value of the weighting factor. The switching, conduction, and harmonic losses were determined at the selected value of the weighting factor for both the proposed and conventional FCS-MPC and compared. The system was simulated in MATLAB/Simulink, and a small-scale hardware prototype was built to realize the system and verify the proposal. Considering only 0.25% more current THD, the switching frequency and loss per phase were reduced by 20.62% and 19.78%, respectively. The instantaneous overall power loss was also reduced by 2% due to the addition of a switching frequency term in the cost function which ensures a satisfactory empirical result for an on-grid PV inverter.

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Multi-constraints based predictive current control of simplified neutral point clamped inverter

Tariquzzaman

Habibullah

Podder

2021

WJE

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Purpose Maintaining a balanced neutral point, reducing power loss, execution time are important criteria for the controlling of neutral point clamped (NPC) inverter. However, it is tough to meet all the challenges and also supplying the load current within the harmonic limit. This paper aims to maintain load current quality within the Institute of Electrical and Electronics Engineers 519 standard and meet the above-mentioned challenges. Design/methodology/approach The output load current of a three-level simplified neutral point clamped (3 L-SNPC) inverter is controlled in this paper using model predictive control (MPC). The 3 L-SNPC inverters is considered because fewer semiconductor devices are used in this topology; this will enhance the reliability of the system. MPC is used as a controller because it can handle the direct current-link capacitors’ voltage balancing problem in a very intuitive way. The proposed 3 L-SNPC yields similar current total harmonic distortion (THD), transient and steady-state responses, voltage stress and over current protection capability as the conventional NPC inverter. To reduce the computational burden of the proposed SNPC system, two simplified MPC strategies are proposed, namely, single voltage vector prediction-based MPC and selective voltage vector prediction-based MPC. Findings The system shows a current THD of 2.33% at 8.96 kHz. The overall loss of the system is reduced significantly to be useful in medium power applications. The required execution times for the simplified MPC strategies are tested on the hardware dSPACE 1104 platform. It is found that the single voltage vector prediction-based MPC and the selective voltage vector prediction-based MPC are computationally efficient by 8.28% and 62.9%, respectively, in comparison with the conventional MPC-based conventional NPC system. Originality/value Multiple system constraints are considered throughout the paper and also compare the SNPC to the conventional NPC inverter. Proper current tracking, over-current protection, overall power loss reduction especially switching loss and maintaining capacitor voltages balance at a neutral point are achieved. The improvement of execution time has also been verified and calculated using hardware-in-loop of the dSPACE DS1104 platform.

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Comprehensive performance analysis of model predictive current control based on-grid photovoltaic inverters

Cited by 5 publications

References 11 publications

Design of an effective control for grid-connected PV system based on FS-MPC

Design of an effective control for grid-connected PV system based on FS-MPC

Power Loss Analysis of Solar Photovoltaic Integrated Model Predictive Control Based On-Grid Inverter

Multi-constraints based predictive current control of simplified neutral point clamped inverter

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