Laboratory Power Conversion System for Controlling and Managing Renewable Energy Chains: Design and Hardware Implementation

The increasing demand for renewable energy sources underscores the need for efficient DC/AC power converter. This paper offerings the scheme and implementation of controlled two-level three-phase inverter aimed at regulating and supplying power from renewable sources such as solar, wind, and hydroelectric. Utilizing IGBT technology, the inverter is customized to provide power to 3-phase balanced star connected load through a passive filter. Its operation is governed by two regulation loops: one for the voltages produced at the AC output and the other for the currents flowing through the input inductor of passive filter. The control approach, developed using Matlab-Simpower Systems, is executed on the eZdsp TMS320F2812 DSP board. Experimental validation involves comparing the effectiveness of bidirectional DC/AC converter with those of a compact industrial module, 7MBR15SA120. The comparison demonstrates a close alignment between the experimental waveforms of the two prototypes, confirming the effectiveness of the proposed control strategy.