Stability Analysis of Quadratic Boost Converter with Different Controllers

DC-DC converters have played a key role in many applications. Such applications demand high gain without any change in voltage for any changes in line and load. Quadratic Boost Converter (QBC) provides a moderately high voltage gain compared to conventional boost topology. However, stability and closed-loop performance are difficult to achieve because of three RHP zeros. A stability analysis of QBC was conducted in this paper. The design of Type II and Type III controllers for QBC is discussed in this paper. A combination of Type II and Type III controllers is proposed for a stable operation of QBC. Performance is validated and compared with the conventional PI controller.