Solar Energy based low cost Converter for Rural Houses Electrification

Abstract

Abstract A Rectified Sinusoidal based Pulse generation method for a DC – DC converter is proposed in this discussion. To exhibit this, the methodology is applied to a Self-Lift topology based SEPIC converter. In this paper a two stage grid connected system is used. In stage I the said converter is used for boosting and DC rectification. This converter is considered, can provide the required voltage from a renewable source. The DC rectification is done by using the RSPWM technique. Stage II uses an inverter which inverts the DC rectified signal to produce AC signal. The usage of the bulky transformers are avoided by using the proposed modulation technique. The notable advantages of the RSPWM technique are : (i) the switches of the inverter are functioned at low frequency (50Hz), (ii) harmonic content of the output waveform is reduced because of RSPWM, (iii) decrease of the filter size and (iv) inverter switches life time are increased as complicated control techniques are avoided. These features are validated through simulations.