sonali raj | National Institute of Technology Patna (original) (raw)

Papers by sonali raj

Research paper thumbnail of Application of different MPPT algorithms for PMSG-based grid-connected wind energy conversion system

Engineering Research Express

Renewable energy sources such as wind energy sources have become the most prominent area of resea... more Renewable energy sources such as wind energy sources have become the most prominent area of research work over the last two decades. Extraction of maximum power and lowering of THD are still the main issues during the integration of wind energy sources to the grid due to the noncontrollable variability of wind energy sources and the application of power electronic devices as interfacing devices. The main objective of this paper is to utilize modern optimization techniques for extracting maximum power points and implementing a Multilevel inverter to obtain minimal THD. This paper has introduced Improved Grey Wolf Optimization with Levy Flight for tracking maximum power from WECS. This Levy flight concept is applied in combination with the improved hunting process of GWO for providing an efficacy solution and a high rate of convergence through global tracking. Distinct MPPT algorithms such as Perturb and Observe (P&O), Grey Wolf Optimization (GWO), and Levy Flight Grey Wolf optimizati...

Research paper thumbnail of A Reinvigorated Optimization Approach for Assessment and Comparison of Various Configured Photovoltaic Array Under Distinct Shading Conditions

Social Science Research Network, 2022

Research paper thumbnail of Distinctive Approaches for Evaluating Maximal Power from Photovoltaic Energy System

Journal of Advanced Research in Dynamical and Control Systems, 2020

Research paper thumbnail of Power Quality Improvement Through Modulation Techniques

Advances in Smart Grid Automation and Industry 4.0, 2021

Research paper thumbnail of A Novel Cascaded H-Bridge Multilevel Inverter for Solar Energy Integration

The production of electricity from the solar energy system has led to decrement in environmental ... more The production of electricity from the solar energy system has led to decrement in environmental pollution, dependency on fossil fuels, and rescue from health-related problems. Despite having numerous benefits, its integration deteriorates the quality of power supply due to (i) Harmonics (ii) variability in voltage, which plays a vital role. This paper is attempting to explore techniques that can mitigate the harmonics and at the same time control voltage in the course of photovoltaic array integration to the load. Here Cascaded H- Bridge multilevel inverters of distinct levels have been designed, analyzed, and compared. Among them, the most favorable 23-level (having total harmonic distortion below 5% as per IEEE-519) of Cascaded H-bridge multilevel inverter is applied as an effective and efficient power electronic interfacing strategy for solar energy integration. The simulation is carried out for performance validation using MATLAB/ SIMULINK software. The subsequent work guidelin...

Research paper thumbnail of Performance Review of Fractional Order PID (FOPID) Based Controllers Employed in Brushless DC Motor

2020 International Conference on Power Electronics & IoT Applications in Renewable Energy and its Control (PARC), 2020

In this paper, a performance review of Fractional order proportional Integral Derivative (FOPID) ... more In this paper, a performance review of Fractional order proportional Integral Derivative (FOPID) Control technique when applied to Brushless DC motor (BLDC) has been presented. BLDC Motor dynamics is of non-linear nature. These uncertain systems cannot be effectively handled by PID controllers. The terms Fractional integrator and fractional derivative enhanced the effectiveness of PID controller. To accomplish the improved response of BLDC motor FOPID parameter tuning is important. The paper introduces a comprehensive performance review of optimization methods which is applied for tuning of FOPID controller.

Research paper thumbnail of Overview of Reduction of Harmonics in Flexible Power Electronic Transformer

This paper introduces modulation techniques to reduce harmonics in Flexible Power Electronic Tran... more This paper introduces modulation techniques to reduce harmonics in Flexible Power Electronic Transformer. The proposed FPET is power electronic based transformer which has enough flexibility to satisfy future needs of power electronic centralized systems. The main feature of the FPET is the independent operation of modules each of which contains one port and connected to a common dc link. Each port can be considered as input or output, because bidirectional power flow is provided. More harmonic component in the input current of FPET has been compared to the similar circuits topologies proposed for multilevel PET. PSM i.e. PHASE SHIFT MODULATION technique will be applied to FPET to control voltage and reduce harmonics. SPWM, SIGMA DELTA MODULATION, and HYSTERESIS BAND CONTROL MODULATION techniques would be used to reduce THD of voltage and current waveforms of FPET.

Research paper thumbnail of Distinctive Approaches for Evaluating Maximal Power from Photovoltaic Energy System

Institute of Advanced Scientific Research, 2020

Ecofriendly green power technology i.e. Solar Photovoltaic based electricity generation is the ra... more Ecofriendly green power technology i.e. Solar Photovoltaic based electricity generation is the rapid developing and a promising source of energy for today's and future world. This has been catalyzed due to the increment of global warming and the depletion of fossil fuel. In this paper, an extensive literature review is conducted for the evaluation of the maximum power point tracking techniques to get the maximal energy extracted from the Photovoltaic panel considering the effects of electrical and environmental parameters. Various algorithms for MPPT are reviewed and compared. The future research directions regarding the efficiency of energy conversion from the Photovoltaic Array are recommended.

Research paper thumbnail of A NOVEL CASCADED H-BRIDGE MULTILEVEL INVERTER FOR SOLAR ENERGY INTEGRATION

Advanced Scientific Research, 2020

The production of electricity from the solar energy system has led to decrement in environmental ... more The production of electricity from the solar energy system has led to decrement in environmental pollution, dependency on fossil fuels, and rescue from health-related problems. Despite having numerous benefits, its integration deteriorates the quality of power supply due to (i) Harmonics (ii) variability in voltage, which plays a vital role. This paper is attempting to explore techniques that can mitigate the harmonics and at the same time control voltage in the course of photovoltaic array integration to the load. Here Cascaded H-Bridge multilevel inverters of distinct levels have been designed, analyzed, and compared. Among them, the most favorable 23-level (having total harmonic distortion below 5% as per IEEE-519) of Cascaded H-bridge multilevel inverter is applied as an effective and efficient power electronic interfacing strategy for solar energy integration. The simulation is carried out for performance validation using MATLAB/ SIMULINK software. The subsequent work guidelines regarding the cost of the multilevel inverter as an interfacing device are proposed.

Research paper thumbnail of A reinvigorated strategy for the analysis of optimal parameters for modeling of Solar Photovoltaic modules under variable conditions

Books by sonali raj

Research paper thumbnail of Power Quality Improvement Through Modulation Techniques

Springer Professional, 2021

This paper presents an innovative idea which has the ability to deal with the issue regarding pow... more This paper presents an innovative idea which has the ability to deal with the issue regarding power quality such as harmonics while integrating renewable energy sources and distributed generation (DG) systems to the electrical power network. The purpose of this paper is to highlight novel approaches for a finer and effective outcome. Here, distinct modulation techniques have been introduced to enhance power quality through minimizing the harmonics and to regulate an output voltage of power electronic-based transformer. The models are designed in MATLAB/Simulink. The different approaches such as sinusoidal pulse width modulation (SPWM), sigma-delta modulation (SDM), delta modulation (DM) and hysteresis band current control technique (HBCC) have been discussed and applied with results and compared with each other to analyze lower THD.

Research paper thumbnail of Application of different MPPT algorithms for PMSG-based grid-connected wind energy conversion system

Engineering Research Express

Renewable energy sources such as wind energy sources have become the most prominent area of resea... more Renewable energy sources such as wind energy sources have become the most prominent area of research work over the last two decades. Extraction of maximum power and lowering of THD are still the main issues during the integration of wind energy sources to the grid due to the noncontrollable variability of wind energy sources and the application of power electronic devices as interfacing devices. The main objective of this paper is to utilize modern optimization techniques for extracting maximum power points and implementing a Multilevel inverter to obtain minimal THD. This paper has introduced Improved Grey Wolf Optimization with Levy Flight for tracking maximum power from WECS. This Levy flight concept is applied in combination with the improved hunting process of GWO for providing an efficacy solution and a high rate of convergence through global tracking. Distinct MPPT algorithms such as Perturb and Observe (P&O), Grey Wolf Optimization (GWO), and Levy Flight Grey Wolf optimizati...

Research paper thumbnail of A Reinvigorated Optimization Approach for Assessment and Comparison of Various Configured Photovoltaic Array Under Distinct Shading Conditions

Social Science Research Network, 2022

Research paper thumbnail of Distinctive Approaches for Evaluating Maximal Power from Photovoltaic Energy System

Journal of Advanced Research in Dynamical and Control Systems, 2020

Research paper thumbnail of Power Quality Improvement Through Modulation Techniques

Advances in Smart Grid Automation and Industry 4.0, 2021

Research paper thumbnail of A Novel Cascaded H-Bridge Multilevel Inverter for Solar Energy Integration

The production of electricity from the solar energy system has led to decrement in environmental ... more The production of electricity from the solar energy system has led to decrement in environmental pollution, dependency on fossil fuels, and rescue from health-related problems. Despite having numerous benefits, its integration deteriorates the quality of power supply due to (i) Harmonics (ii) variability in voltage, which plays a vital role. This paper is attempting to explore techniques that can mitigate the harmonics and at the same time control voltage in the course of photovoltaic array integration to the load. Here Cascaded H- Bridge multilevel inverters of distinct levels have been designed, analyzed, and compared. Among them, the most favorable 23-level (having total harmonic distortion below 5% as per IEEE-519) of Cascaded H-bridge multilevel inverter is applied as an effective and efficient power electronic interfacing strategy for solar energy integration. The simulation is carried out for performance validation using MATLAB/ SIMULINK software. The subsequent work guidelin...

Research paper thumbnail of Performance Review of Fractional Order PID (FOPID) Based Controllers Employed in Brushless DC Motor

2020 International Conference on Power Electronics & IoT Applications in Renewable Energy and its Control (PARC), 2020

In this paper, a performance review of Fractional order proportional Integral Derivative (FOPID) ... more In this paper, a performance review of Fractional order proportional Integral Derivative (FOPID) Control technique when applied to Brushless DC motor (BLDC) has been presented. BLDC Motor dynamics is of non-linear nature. These uncertain systems cannot be effectively handled by PID controllers. The terms Fractional integrator and fractional derivative enhanced the effectiveness of PID controller. To accomplish the improved response of BLDC motor FOPID parameter tuning is important. The paper introduces a comprehensive performance review of optimization methods which is applied for tuning of FOPID controller.

Research paper thumbnail of Overview of Reduction of Harmonics in Flexible Power Electronic Transformer

This paper introduces modulation techniques to reduce harmonics in Flexible Power Electronic Tran... more This paper introduces modulation techniques to reduce harmonics in Flexible Power Electronic Transformer. The proposed FPET is power electronic based transformer which has enough flexibility to satisfy future needs of power electronic centralized systems. The main feature of the FPET is the independent operation of modules each of which contains one port and connected to a common dc link. Each port can be considered as input or output, because bidirectional power flow is provided. More harmonic component in the input current of FPET has been compared to the similar circuits topologies proposed for multilevel PET. PSM i.e. PHASE SHIFT MODULATION technique will be applied to FPET to control voltage and reduce harmonics. SPWM, SIGMA DELTA MODULATION, and HYSTERESIS BAND CONTROL MODULATION techniques would be used to reduce THD of voltage and current waveforms of FPET.

Research paper thumbnail of Distinctive Approaches for Evaluating Maximal Power from Photovoltaic Energy System

Institute of Advanced Scientific Research, 2020

Ecofriendly green power technology i.e. Solar Photovoltaic based electricity generation is the ra... more Ecofriendly green power technology i.e. Solar Photovoltaic based electricity generation is the rapid developing and a promising source of energy for today's and future world. This has been catalyzed due to the increment of global warming and the depletion of fossil fuel. In this paper, an extensive literature review is conducted for the evaluation of the maximum power point tracking techniques to get the maximal energy extracted from the Photovoltaic panel considering the effects of electrical and environmental parameters. Various algorithms for MPPT are reviewed and compared. The future research directions regarding the efficiency of energy conversion from the Photovoltaic Array are recommended.

Research paper thumbnail of A NOVEL CASCADED H-BRIDGE MULTILEVEL INVERTER FOR SOLAR ENERGY INTEGRATION

Advanced Scientific Research, 2020

The production of electricity from the solar energy system has led to decrement in environmental ... more The production of electricity from the solar energy system has led to decrement in environmental pollution, dependency on fossil fuels, and rescue from health-related problems. Despite having numerous benefits, its integration deteriorates the quality of power supply due to (i) Harmonics (ii) variability in voltage, which plays a vital role. This paper is attempting to explore techniques that can mitigate the harmonics and at the same time control voltage in the course of photovoltaic array integration to the load. Here Cascaded H-Bridge multilevel inverters of distinct levels have been designed, analyzed, and compared. Among them, the most favorable 23-level (having total harmonic distortion below 5% as per IEEE-519) of Cascaded H-bridge multilevel inverter is applied as an effective and efficient power electronic interfacing strategy for solar energy integration. The simulation is carried out for performance validation using MATLAB/ SIMULINK software. The subsequent work guidelines regarding the cost of the multilevel inverter as an interfacing device are proposed.

Research paper thumbnail of A reinvigorated strategy for the analysis of optimal parameters for modeling of Solar Photovoltaic modules under variable conditions

Research paper thumbnail of Power Quality Improvement Through Modulation Techniques

Springer Professional, 2021

This paper presents an innovative idea which has the ability to deal with the issue regarding pow... more This paper presents an innovative idea which has the ability to deal with the issue regarding power quality such as harmonics while integrating renewable energy sources and distributed generation (DG) systems to the electrical power network. The purpose of this paper is to highlight novel approaches for a finer and effective outcome. Here, distinct modulation techniques have been introduced to enhance power quality through minimizing the harmonics and to regulate an output voltage of power electronic-based transformer. The models are designed in MATLAB/Simulink. The different approaches such as sinusoidal pulse width modulation (SPWM), sigma-delta modulation (SDM), delta modulation (DM) and hysteresis band current control technique (HBCC) have been discussed and applied with results and compared with each other to analyze lower THD.