Design of residential photovoltaic power system using current-fed push-pull front end converter

摘要

These paper showes, push-pull converter along with soft-switching current-fed front end converter. Renewable energy is gaining importance in residential as well as industrial application. Generally there are two mechanism in manufacturing of PV panel, parallel-connected configuration and series-connected configuration. Looking at the safety issue in this paper, series-connected configuration is used. Initially Push-pull converter converts and step-up DC/DC voltage and after this stage, inverter inverts DC/AC. Active clamping circuit is used to overcome the effect of voltage overshoot. Effect of voltage spike is reduced by using Zero-current switching of primary devices and zero-voltage switching of secondary devices. Wide variation in voltage is maintained by Soft-switching. To check the result a 250W simulation is proposed.