Non-linear Control of Grid Tied Solar Photovoltaic System Considering Uncertainties

Abstract

This work proposes a robust and efficient control approach for grid-connected solar photovoltaic (PV) systems considering non-linear and uncertain behaviour. The proposed controller is consisting of a super twisting algorithm-based second-order sliding mode control. The main objective to design this controller is to achieve maximum power transfer from the solar PV system in addition to control the DC link voltage and the current injected into the grid. Uncertainties in solar PV system output are considered as the input conditions changes. The proposed controller has been tested for various test cases and performance analysis carried out. The proposed system performs very well under transient conditions and gives very fast response. Performances of the proposed controller are also verified experimentally with the help of hardware implementation under different scenarios. The developed system performs accurately to meet the objective and as well as maintain the standards defined by IEEE.

Keywords:

• Generalized neural network approach
• Intelligent control algorithms
• Power quality
• Solar photovoltaic system
• Voltage source converter

Additional information

Notes on contributors

Priyanka Chaudhary

Priyanka Chaudhary completed her PhD degree at Department of Electrical Engineering, Delhi Technological University, Delhi, India. She published and presented more than 14 research papers in reputed international and national journals and conference proceedings. She is the recipient (Department of Science and Technology Govt of India), international travel grant to present her research at international conference in Italy. She is a student member of IEEE. Her area of interest includes renewable energy systems especially solar photovoltaic systems, power system engineering, smart grid and soft computing applications in power systems, etc.

M. Rizwan

M Rizwan did his post-doctoral research at Virginia Polytechnic Institute and State University, USA. He has more than 18 years of teaching and research experience. Dr Rizwan successfully completed three research projects in the area of renewable energy systems and published and presented more than 135 research papers in reputed international/national journals and conference proceedings. He is the recipient of Raman Fellowships for post-doctoral research for indian scholars in USA for the year 2016–2017. His area of interest includes power system engineering, renewable energy systems particularly solar photovoltaic, building energy management, smart grid and soft computing applications in renewable energy systems. He is Sr Member IEEE, Life Member, ISTE, Life Member SSI, Member International Association of Engineers (IAENG), and many other reputed societies. He is also associated with many journals including IEEE Transactions, IET Renewable Power Generation, IET Generation, Transmission and Distribution, International Journal of Electrical Power and Energy Systems, Renewable and Sustainable Energy Reviews, Energy, Solar Energy (Elsevier), International Journal of Sustainable Energy, Energy Sources-Part A: Recovery, Utilization, and Environmental Effects (Taylor and Francis) in different capacities. Email: [email protected], [email protected].