A Simple Sinusoidal Buck Converter Working as A Single-Phase Grid-Connected Inverter
DOI:
https://doi.org/10.9744/jirae.5.2.53-56Keywords:
buck converter, grid-connected inverter, sinusoidal duty-rasio, push-pull converter, grid synchronizationAbstract
The need for a simple grid-connected inverter is increasing. The integration of a simple buck converter and a push-pull converter to be a grid-connected inverter is presented in this paper. The buck converter is controlled by a sinusoidal duty ratio to produce a series positive half-cycle of a sine wave. Then, the push-pull converter solves it to generate the complete sinusoidal output voltage and current. Moreover, grid synchronization works properly by sensing the grid voltage, which is then used as a reference voltage to connect the inverter to the grid successfully. The grid sees the inverter as a resistive load with a unity power factor. The total harmonic distortion (THD) of the grid current is 4.87% for the THD grid voltage of 2.07%.
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Published
2020-10-30
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