A solar based SEPIC converter for street lighting application

There has been an increase in demand for clean and sustainable energy sources, and solar energy is currently considered to be one of the most valuable and abundant yet low-maintenance clean sustainable energy source. Photovoltaic solar energy systems require DC-DC converter in order to regulate and control the varying output of the solar panel. The single ended Primary inductance Converter topology performs the operation of a buck-boost converter but with no voltage polarity reversal. This paper suggests a converter design that will ensure high performance and cost efficiency while powering up an LED street lamp. The converter has been simulated in PSIM and the hardware was done by choosing the design values appropriately.A voltage input value of 24 volts and output value of 72 volts are assigned in correspondence with the street-lamp ratings. This design aims to have lower losses for higher switching frequencies, and maximize the added advantages of the proposed converter, such as low ripple, high efficiency and low electrical stress on the components.