An Isolated Solar Power Generation using Boost Converter and Boost Inverter

In this paper, a solar power generation is investigated as an isolated portable system using a boost converter and a single stage sine wave boost inverter. The proposed configuration boosts the low voltage of photovoltaic (PV) array using a dc-dc boost converter to charge the battery at 96V and to convert this battery voltage into high quality 230V rms ac voltage at 50Hz for feeding autonomous loads without any intermediate conversion stage and a filter. A maximum power point tracking (MPPT) scheme is proposed with series connection of a dc-dc converter input with a PV panel for high efficiency. This approach increases the efficiency of the energy conversion. The ac voltage total harmonic distortion (THD) obtained using this configuration is quite acceptable. The proposed power generation system has several desirable features such as low cost and compact size as number of switches used, are limited to four as against six switches used in classical two-stage inverters. The complete system is designed and modeled in MATLAB/ SIMULINK and simulated results are presented to demonstrate its satisfactory performance.

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