Power Research

Aparna Paulose ¹, Vani Vijay ², Reeba S. V. ³, Neha Adhikari ²

Affiliations
1 Department of E&E, PES Institute of Technology, Bengaluru - 560100, IN
2 Energy Efficiency and Renewable Enenrgy Division, Central Power Research Institute, Bengaluru - 560080, IN
3 Department of Electrical Engineering, College of Engineering Trivandrum, Kerala - 695016, IN

Abstract

Solar PV based Power generation is gaining importance in the present scenario of energy crisis. Precise control of Solar PV inverter is a very important factor deciding the efficiency and performance of Solar PV sources. Space Vector Modulation (SVM) technique is widely used for pulse width modulation in inverters, especially for power supplies for obtaining improved sine wave output. It is based on the representation of the three phase quantities as vectors in a two-dimensional using α and β co-ordinates. Here, a new three–dimensional (3-D) space vector algorithm in a-b-c co-ordinates for multilevel inverters is presented, which is based on the 3-Dimensional geometry of the vectors. This method calculates the on-state duration of switching vector without involving trigonometric functions, look-up tables or coordinate system transformation. Hence the computational complexity is very less compared to other algorithms. The proposed scheme is explained for a multilevel inverter and simulation results are presented with comparison of performance of a two level inverter and a three level inverter using this technique. The results shows that the algorithm can be applied for higher level inverter so that it operates at reduced Total Harmonic distortion.

Keywords

Multilevel Inverters, Space Vector Modulation (SVM), Three-dimensional (3-D) Space Vector

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Neha Adhikari ¹

Affiliations
1 Engineering Officer Grade-3, Energy Efficiency and Renewable Energy Division, Central Power Research Institute, Bangalore-560080, IN

Abstract

Building Integrated Photovoltaic (BIPV) systems is one of the most promising technologies and has recently being experiencing a technological growth. There is a consensus that these advancements may lead us to novel methods for domestic energy generation. Technical improvements, governmental policy supportive and financial aids are some of the contributors to this development. However, the amount of building integrated solar power generation as compared to other forms of solar electricity generation methods is still negligible. In this study, a review is presented including the amount of work done in this area and their findings. It summarizes the current state-of-art of these systems.

Keywords

BIPV, eenewable energy economics, solar ehotovoltaic, state-of-Art

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Neha Adhikari ¹, Vikas Pratap Singh ²

Affiliations
1 Engineering Officer Grade-3, Energy Efficiency and Renewable Energy Division, CPRI, Bangalore-560080, IN
2 Energy Efficiency and Renewable Energy Division, Central Power Research Institute, Bangalore-560080, IN

Abstract

This paper presents the studies on the solar photovoltaic system in the partial shading conditions. The standalone solar photovoltaic system for residential application of 2 kW power rating is considered in the system analysis. The proposed system is using a set of batteries for energy storage with a flyback dc-dc converter and a single phase voltage source inverter is designed with the controller to regulate the power quality at the consumer end. The studies are carried out as case studies on the different conditions of the shading and results are presented to analyze the PV output power and evaluate the overall system performance. Based on the results obtained few measures are suggested to keep the check on the performance in such conditions.

Keywords

Solar photovoltaic, MPPT controller, Inverter, Partial shading, Standalone energy system

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Vikas Pratap Singh ¹, Vivek Vijay ¹, D. K. Chaturvedi ², Neha Adhikari ³

Affiliations
1 Indian Institute of Technology Jodhpur, IN
2 Department of Electrical Engineering Faculty of Engineering, D.E.I. Dayalbagh, Agra, U.P.-282 005, IN
3 ERED, Central Power Research Institute, Bangalore - 560080, IN

Abstract

The various forms of solar energy - solar heat, solar photovoltaic, solar thermal electricity, and solar fuels offer a clean, climate-friendly, very abundant and in-exhaustive energy resource to mankind. Solar power is the conversion of sun light into electricity, directly using photovoltaic (PV). The forecasting of energy Demands have become concerns for facility managers, and predicting energy generation plays a critical role in power-system management, scheduling, and dispatch operations. A reliable energy supply forecast helps to prevent unexpected loads and provides vital information for decisions made on energy generation and purchase. However, study of energy generation prediction by the photovoltaic (PV) system has been limited over the years, especially concerning short-term predictions. This study will helps in providing the details on different type of models and techniques of solar power forecasting.

Keywords

Solar forecasting; Forecasting models; Forecasting techniques.

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Neha Adhikari ¹, Pardeep K. ²

Affiliations
1 Engineering Officer Grade-3, Energy Efficiency and Renewable Energy Division, Central Power Research Institute, Bangalore-560080, IN
2 Engineering Assistant, Energy Efficiency and Renewable Energy Division, Central Power Research Institute, Bangalore-560080, IN

Abstract

This paper coversthe design and modelling of a grid-connected solar photovoltaic energy generation system. Solar-PV system with MPPT (maximum power point tracking) controller to track maximum power point is designed with a dc-dc converter. The output of PV array is fed to the VSI converter through a dc-dc converter. For regulating the output voltage and current under varying conditions,a VSI is designed with closed loop controllers. Simulation model for this designed system is developed in Simulink/Matlab platform and simulated results are presented to demonstrate its performance under steady and dynamic conditions.

Keywords

Closed loop controller, DC-DC converter, Maximum power point tracking, Solar photovoltaic.

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Neha Adhikari ¹, Bhim Singh ², A. L. Vyas ³

Affiliations
1 Engineering Officer Grade-3, Energy Efficiency and Renewable Energy Division, CPRI, Bangalore-560080, IN
2 Professor, Department of Electrical Engineering, Indian Institute of Technology, Delhi, New Delhi-110016, IN
3 Professor, Instrument Design and Development Centre, Indian Institute of Technology, Delhi, New Delhi-110016, IN

Abstract

This paper deals with the design, modeling and performance evaluation of standalone solar-PV (Photo- Voltaic) system using interval type FLC (Fuzzy Logic Controller) based MPPT (Maximum Power Point Tracking) controller. The proposed system is designed for a 5 kW solar-PV generating system. The system consists of a solar-PV array connected with the single phase VSI (Voltage Source Inverter) through a MPPT controller and an LCL filter is used to feed the power to the consumer loads. The design procedure and modeling of the system components and controller is presented in detail. The performance of the system is evaluated in steady and dynamic system conditions to validate its design and model. The voltage controller is designed to maintain the dc link voltage and performing under varying input voltages. The output voltage and current regulator is designed to maintain the power quality under varying consumer loads and results are presented for THD (Total Harmonic Distortion) which are found under the limits of 5%.

Keywords

Solar Photovoltaic, MPPT control, FLC controllers, Isolated Cuk Converter

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