A NOVEL BIDIRECTIONAL DC-DC CONVERTER WITH HIGH STEP-UP AND STEP-DOWN VOLTAGE GAINS

Abstract

A bidirectional dc-dc converter with high step-up and step-down voltage gain is handling in this seminar paper. High voltage gains are obtained by employing a coupled inductor with same primary and secondary winding turns in the converter. Beside from high voltage gain, its average value of switch current and voltage stress on switches are lower compared to conventional dc-dc converter. The steady state analysis and operating principles in continuous conduction mode are discussed. Pulse width modulation (PWM) is used to control the switches. To study the performance of the proposed converter, simulations has been carried out in MATLAB environment. Feedback is also given to the circuit using a pi controller and relational operator to get a constant output voltage for such applications.