Thursday, 9 April 2015

A Sliding Mode control based Single stage Boost Inverter for Photovoltaic Applications



M.Thiyagarajan 1, B.Meenakshi Sundaram 2, Dr.B.V.Manikandan 3
1PG student- Department of EEE – Sethu Institute of Technology, Kariapatti, Tamilnadu, India.
2Assistant Professor - Department of EEE – Sethu Institute of Technology, Kariapatti, Tamilnadu, India.
2 Associate Professor - Department of EEE – Sethu Institute of Technology, Kariapatti, Tamilnadu, India.
This paper proposes a new voltage source inverter referred as Single stage Boost Inverter. The main attribute of the inverter topology is the fact that it generates an ac output voltage larger than the dc input one, depending on the instantaneous duty cycle. The main concept of the new converter is to use a single-stage solar PV converter to perform dc/dc and dc/ac operations. For the purpose of optimizing the boost inverter dynamics, while ensuring correct operation in any working condition, a sliding mode controller is proposed. The main advantage of the sliding mode control over the classical control schemes is its robustness for plant parameter variations, which leads to invariant dynamics and steady-state response in the ideal case. Operation, analysis and control strategy are included in this paper. The proposed method is verified on a photovoltaic system and modeled in MATLAB-SIMULINK software.
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