Informatics Publishing Limited

B. Chandrasekhar ¹, Sanjay Lakshminarayanan ², R. Sudhir Kumar ¹

Affiliations
1 Energy Efficiency and Renewable Energy Division, Central Power Research Institute, Bangalore- 560080, IN
2 Associate Professor, EEE Department,MS Ramaiaha Institute of Technology, Bangalore-560054, IN

Abstract

Integration of more than one energy source depends on the power electronic converters is an interesting and challenging task for researchers. In this paper, integrated double input DC to DC converter for low voltage energy source applications is explained. Integrated buck converter which can step down the input voltage according to output voltage required at the load end. The converter is able to integrate different voltages of various energy sources such as solar photovoltaic, wind energy system, fuel cell and diesel etc. of relatively low voltage. The converter is designed considering double input, in which same or different type of two inputs can be used individually or simultaneously. Modes of operation of converter are described in detail, closed loop simulation with a PI controller using MATLAB/Simulink^TM results are presented in detail.

Keywords

Double input DC-DC converter, hybrid energy system, closed loop control.

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B. Chandrasekhar ¹, Sanjay Lakshminarayanan ², S. Sudhakara Reddy ³

Affiliations
1 Senior Research Fellow, Energy Efficiency & Renewable Energy Division, Central Power research Institute, Bangalore - 560 080, IN
2 Associate Professor, Electrical & Electronics Engineering, MS Ramaiah Institute of Technology, Bangalore - 560054, IN
3 Joint Director, Energy Efficiency & Renewable Energy Division, Central Power Research Institute, Bangalore - 560080, IN

Abstract

Renewable energy sources (RES) are being increasingly connected in distribution systems utilizing power electronic converters. This paper presents an advanced control strategy for achieving maximum power quality benefits from the grid interfacing inverters when installed in 3-phase distribution systems. The grid tie inverter can be utilized as i) Power converter to inject power generated from RES to the grid and ii) shunt active power filters to compensate current imbalance, load current harmonics, reactive power demand and load neutral current. All of these functions may be accomplished either individually or simultaneously. This control concept is clearly explained with MATLAB/SIMULINK simulation results and THD is less than 5%.

Keywords

Renewable energy sources, grid tied inverter, active power filter, power quality

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