Design and experimental investigation of digital model predictive current controller for single phase grid integrated photovoltaic systems

Chatterjee, Aditi; Mohanty, Kanungo Barada; Kommukuri, Vinaya Sagar; Thakre, Kishor

doi:10.1016/j.renene.2017.02.057

Cited by 25 publications

(12 citation statements)

References 24 publications

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“…Renewable energy technologies produce energy by converting natural phenomena into useful forms of energy [1][2][3][4]. Photovoltaic (PV) cells are devices that use semiconductor materials to convert the sunlight into electrical energy.…”

Section: Introductionmentioning

confidence: 99%

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Modeling photovoltaic grid inter-shading

Chitkusheva-Dimitrovska

Čepin

Golubovski

et al. 2020

THERM SCI

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Photovoltaic energy conversion is an efficient renewable source affordable as a technology even on the household level. Several technological aspects are subject to continuous improvement. This paper tackles the possibilities for denser panel population of a photovoltaic plant thus more efficient space utilization. The objective is to develop a mathematical model of inter-shading among the photovoltaic panels. The model calculates the electrical energy obtained from panels and considers the shading among the panels. The geographical location of the plant location, the distances between the solar panels and their angle of inclination, the dimensions of the panels and the time interval under evaluation are the parameters which are important for placing the power plant. The results show how much electric energy can be obtained from a certain set of photovoltaic panels. The results indicate, what are the distances between the panels for better allocation of resources when deciding on the number of solar panels and their arrangement.

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Section: Introductionmentioning

confidence: 99%

“…A grid-connected PV system consists of solar panels, one or several inverters, a power conditioning unit and grid connection equipment. Several researchers have dealt with this issue [1][2][3][4][5][6][7][8]. Their research is based on the optimal placement of solar panels depending on the angle of inclination.…”

Section: Introductionmentioning

confidence: 99%

Modeling photovoltaic grid inter-shading

Chitkusheva-Dimitrovska

Čepin

Golubovski

et al. 2020

THERM SCI

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“…The proportional-resonant (PR) controller has been proposed for better dynamics over the PI controller [20], but the PR controller is a complex controller and selection of the individual harmonic frequency for compensation under distorted grid conditions is one of the limitations. Chatterjee et al reported that the model predictive controller-based PV inverter integrated with the grid [21]. Nevertheless, the requirement of the high sampling frequency, i.e., 200 kHz, and the optimization process agnostic to the controller cost function and heavy computation during the operation of single-phase systems affected nonlinear loads.…”

Section: Introductionmentioning

confidence: 99%

Scalable Single-Phase Multi-Functional Inverter for Integration of Rooftop Solar-PV to Low-Voltage Ideal and Weak Utility Grid

2019

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Integration of rooftop solar-PV (RTSPV) systems and extensive use of nonlinear loads in the low-voltage distribution system (LVDS) leads to poor power quality (PQ). Therefore, it is necessary to address the issues leading to poor PQ at the point of common coupling of the LVDS. In this article, a multi-band hysteresis current control (MB-HCC) for the multi-functional inverter (MFI) is proposed which improves the efficiency of the MFI and also enhances the PQ of the LVDS. The MB-HCC uses simple switching logic and outperforms in its multi-functional tasks such as active power injection and power conditioning. MB-HCC offers better efficiency over variable double-band HCC (VDB-HCC) as it operates at a lower switching frequency. The performance of the proposed system is simulated by using MATLAB/Simulink and validated by OPAL-RT based real-time simulation studies. During the variation of solar irradiation, the proposed MFI has an average efficiency of 98.5% under the ideal grid and 97.34% under the distorted grid. Moreover, the percentage of Total Harmonic Distortion under ideal and distorted grid conditions is brought down to below 5%, and also, reactive power compensation maintains unity power factor operation complying with the IEEE-519-2014 and 1547 standards. These results substantiate the hypothesis of scalability of the single-phase MB-HCC-based MFI for an LVDS contributing to economy and ecology.

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“…Moreover, these controllers suffer from robustness with changes in atmospheric conditions. Some advanced linear control techniques are used in [16][17][18] to design controllers for VSIs in grid-connected PV systems and these controllers ensure robustness to some extent as these are designed based on the state-space models of grid-connected PV systems. However, the operating points of these controllers limited to some specific operating conditions as these are designed based on the linearized models of grid-connected PV systems.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, the performance of the designed feedback linearizing model predictive controllers is evaluated based on the control inputs represented by Equations (16) and (17). However, it is essential to validate the assumption of ζ qi = 0, i.e., the noise or disturbance decoupling capability of the proposed scheme, which is done in the following section.…”

mentioning

confidence: 99%

Partial Feedback Linearizing Model Predictive Controllers for Multiple Photovoltaic Units Connected to Grids through a Point of Common Coupling

Orchi

Mahmud

2018

Electronics

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In this paper, partial feedback linearizing model predictive controllers are designed for grid-connected systems comprising multiple photovoltaic (PV) units where these units are connected through a point of common coupling (PCC). The proposed controllers are designed for voltage source inverters (VSIs) based on comprehensive dynamical models of grid-connected PV systems with the proposed topology. The proposed partial feedback linearization scheme decouples multiple PV units in the forms of several reduced-order subsystems and enables linear controller design through the linear continuous-time receding horizon model predictive control scheme. The proposed partial feedback linearization scheme also considers dynamic interactions among multiple PV units as external noises or disturbances and decouples these noises. This paper includes the noise decoupling capability of the partial feedback linearization for grid-connected PV systems with multiple PV units which are connected through a PCC. Simulation results clearly demonstrate the effectiveness of the proposed scheme under different operating conditions as compared to an existing proportional integral controller.

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Design and experimental investigation of digital model predictive current controller for single phase grid integrated photovoltaic systems

Cited by 25 publications

References 24 publications

Modeling photovoltaic grid inter-shading

Modeling photovoltaic grid inter-shading

Scalable Single-Phase Multi-Functional Inverter for Integration of Rooftop Solar-PV to Low-Voltage Ideal and Weak Utility Grid

Partial Feedback Linearizing Model Predictive Controllers for Multiple Photovoltaic Units Connected to Grids through a Point of Common Coupling

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