Comparative Analysis of Two Interleaved DC Boost Topologies with Constant Duty Cycle

A. Sriharibabu, G. Srinivasa Rao.

The use of applications driven by batteries improves the demand for effective dc-dc converters during modern day-to-day life. These include a wide range of solar based applications, Fuel cell systems, uninterrupted power supplies (UPS) and hybrid electric vehicles. Boost converters are the suitable converters among the DC to DC converters to charge the batteries due to their capability of boosting up the voltage since low level to high level. But conventional boost converters suffer from high ripple content in the output voltage and input current with less reliability. The interleaved connection of the two conventional converter topologies is one of the best solutions to overcome some of these problems. The basic working principle of interleaved converters is that the input current is transferred between the inductors to provide increased efficiency and high reliability in power systems. This paper mainly focuses on the comparison of two interleaved DC converter topologies of Conventional boost converter (CBC) and tri-state boost converter (TBC) ie. interleaved boost converter (IBC) and interleaved tri-state boost converter (ITBC) using MATLAB / SIMULINK software under same design specifications and duty cycle. It is found that while comparing the results of the conventional topologies, interleaved connections results less ripple content at output voltages and input currents. And with the comparison of simulation results of two interleaved converters, the ITBC is found as the best suited converter for the battery charging applications.

Volume 11 | Issue 5

Pages: 465-471