PROJECT TITLE :

A New Transformerless Buck-Boost ConverterWith Positive Output Voltage - 2016

ABSTRACT:

A brand new transformerless buck-boost converter with easy structure is proposed in this study. Compared with the traditional buck-boost converter, the proposed buck-boost converter's voltage gain is squared times of the previous's and its output voltage polarity is positive. These blessings enable it to work in an exceedingly wider range of positive output. The two power switches of the proposed buck-boost converter operate synchronously. In the continuous conduction mode (CCM), two inductors are magnetized and 2 capacitors are discharged during the switch-on amount, while 2 inductors are demagnetized and two capacitors are charged throughout the switch-off amount. The operating principles, the steady-state analyses, and the small-signal model for the proposed buck-boost converter operating in CCM are presented very well. The Power Electronics simulator (PSIM) and therefore the circuit experiments are provided to validate the effectiveness of the proposed buck-boost converter.