AC to DC Converter for Low Voltage Small Scale Generator

AC-DC single-stage converters are attractive because of their simplicity. The conventional power electronics converters used for such application have two stages, a diode bridge rectifier at the front end followed by a dc-dc boost converter. However, the extremely low output voltage of electromagnetic microgenerator does not allow diode bridge rectification. Even if possible, the losses in the front and diode bridge make the conventional power electronic interfaces quite inefficient. The proposed single stage converter directly boosts the micro-generator low ac voltage to usable dc voltage level, and hence, achieves higher efficiency. The main objective of this study is to minimize the cost, output ripple and minimize use of the dc power sources which makes converter circuit inefficient in the field of various electronic devices.