کنفرانس مهندسی برق ایران

صفحه اصلی / سی و دومین کنفرانس بین المللی مهندسی برق

A New High Step-Up Quasi Z-Source DC-DC Converter Using Buffer and Switched Capacitor Techniques

نویسندگان :

Erfan Meshkizadeh¹ Ebrahim Afjei² Morteza Kheradmandi³

1- Shahid Beheshti University 2- Shahid Beheshti University 3- Shahid Beheshti University

کلمات کلیدی :

DC–DC converter،quasi-Z-source،switched capacitor،buffer،impedance network

چکیده :

In this paper, a new high step-up quasi-Z-source DC-DC converter is introduced using a buffer section and a switched capacitor cell. The buffer section and the switched capacitor are added to extend the basic quasi-Z-source DC-DC converter to achieve a higher voltage gain with a continuous input current with the same voltage stress on semiconductors and capacitors. The proposed converter constitutes one switch and 4 diodes, implying two more semiconductors compared to the basic quasi-Z-source DC-DC converter. The performance analysis, the steady state and theoretical equations, and the comparison and components design are derived and verified by simulation waveforms. The components are designed for a 400W converter power, and the simulations are carried out in the PSIM software.