Ripple Minimization in a Quadratic Boost Converter: Software vs. Hardware solutions

In this work, the authors have studied a quadratic boost DC-DC converter to reduce its ripple in the output voltage and the input current. This aim has been obtained by implementing two different solutions: the hardware solution consists on the use of coupled inductors and a notch output filter, the software solution is based on a random PWM and uses uncoupled inductors. The two solutions show a different impact on the output voltage and in the input current ripple. The performance of proposed solutions is evaluated and compared by simulation analysis both in time and frequency domain.